Gossen Metrawatt M520P, PROFITEST MBASE, PROFITEST MTECH, PROFITEST MPRO, PROFITEST MXTRA User guide

...

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Operating Instructions

Series PROFITEST MASTER PROFITEST MBASE+, MTECH+, MPRO, MXTRA, SECULIFE IP

Test Instruments for IEC 60364 / DIN VDE 0100

3-349-647-03

15/7.16

456

91011

MEM: Key for memory functions

HELP: Access context sensitive help

IΔ

: Tripping test

Proceeding to next function (semi-automatic measurement)

Start offset measurements

ON/START

: Switch instrument on,

start/stop measurement

ESC:Return to submenu

Softkeys

Control Panel

Test Instrument and Adapter

16 1715

Fixed Function Keys

19 20 21

RS 232

• Parameter selection

• Specify limit value

• Entry functions

• Memory functions

LEDs and connection icons → section 18

Sockets for Current Clamp Sensor, Probe and PRO-AB Leakage Current Adapter

Interfaces, Charger Jack

* Refer to section 2.1 page 5 regarding usage of

the test probes.

2 GMC-I Messtechnik GmbH

Key

Test Instrument and Adapter

1 Control panel with keys and

display panel with detent for ideal viewing angle

2 Eyelets for attaching the

shoulder strap 3 Rotary selector switch 4 Measuring adapter (2-pole) 5 Plug insert (country specific) 6 Test plug (with retainer ring) 7 Alligator clip (plug-on) 8 Test probes 9

▼ key ON/START *

10 I key IΔ

/compens./Z

OFFSET

11 Contact surfaces for finger

contact

12 Test plug holder 13 Fuses 14 Holder for test probes (8)

Connections for Current Clamp, Probe and PRO-AB Adapter

15 Current clamp connection 1 16 Current clamp connection 2 17 Probe connection

Interfaces, Charger Jack

18 Bluetooth

19 USB slave for PC connection 20 RS 232 for connecting barcode

scanner or RFID reader

21 Jack for Z502P charger

Attention! Make sure that no batteries are inserted before connecting the charger.

22 Battery Compartment Lid

(compartment for batteries and replacement fuses)

Please refer to section 17 for explanations regarding control and display elements.

Battery level indicator

Meas. function

Meas. in progress /

Memory occupancy

Measured

Parameter

Display Panel

Save value

Battery full

Battery OK

Battery weak

Battery (nearly)

Battery level indicator

BAT

Memory occupancy display

MEM

Memory half full

MEM

Memory full > transfer data to PC

Connection Test – Mains Connection Test (→ section 18)

NPEL

)(

Connection OK L and N reversed

NPEL NPEL

RUN READY

Connection test → section 18

depleted: U < 8 V

LPEN

These operating instructions describe a tester with software version SW-VERSION (SW1) 01.16.00

* Can only be switched on with the key on the instrument

Bluetooth® active:

quantities

stopped

Overview of Device Settings and Measuring Functions

Switch Setting,

Descr. on

SETUP

page 8

Measurements with line voltage U

page 16

Appears for all meas. shown below:

IΔN

page 18

page 20

ZL-PE

page 26

ZL-N

page 28

page 30

Measurements at voltage-free objects RE

(MPRO) (MXTRA)

page 37

RLO

page 47

RISO RINS

page 44

SENSOR

page 50

EXTRA

page 51

AUTO

page 64

only MXTRA & SECULIFE IP

Pictograph

Device Settings Measuring Functions

Brightness, contrast, time/date, Bluetooth® Language (D, GB, P), profiles (ETC, PS3, PC.doc)

Default settings < Test: LED, LCD, acoustic signal Rotary switch balancing,

battery test >

Single-phase measurement U

UL-N Voltage between L and N UL-PE Voltage between L and PE UN-PE Voltage between N and PE US-PE Voltage between probe and PE f Frequency

3-phase measurement U

UL3-L1 Voltage between L3 and L1 UL1-L2 Voltage between L1 and L2 UL2-L3 Voltage between L2 and L3 f Frequency

Phase sequence

U / U f / f

UIΔN Contact voltage ta Tripping time RE Earth resistance UIΔN Contact voltage IΔ Residual current RE Earth resistance

ZL-PE Loop impedance IK Short-circuit current

ZL-N Line impedance IK Short-circuit current

UE Earth electrode voltage (probe/clamp)

RLO Low-resistance with polarity reversal

RLO+, RLO– Low-resistance, single-pole Roffset Offset resistance RINS Insulation resistance RE(INS) E U Voltage at the test probes UINS Test voltage

L/AMP

T/RF Temperature/humidity (in preparation)

ΔU Voltage drop measurement ZST Standing surface insulation impedance kWh test Meter start-up test, earth contact plug

IL IMD Ures ta + ΔI RCM e-mobility PRCD

Line voltage / nominal line voltage

Line frequency / nominal line frequency

2-pole measurement (ground loop) RE(L-PE)

2-pole measurement with country spec. plug

3-pole measurement (2-pole with probe)

Selective meas. with current clamp sensor

3-pole measurement

4-pole measurement

Selective measurement with current clamp sensor

2-clamp measurement (earth loop res.)

Soil resistivity

arth leakage resistance

Ramp: triggering/breakdown voltage

Residual or leakage current

Leakage current meas. with Z502S adapter

Check insulation monitoring device

Residual voltage test

Intelligent ramp

RCM (residual current monitor)

Electric vehicles at charging stations (IEC 61851)

Testing of PRCDs type S and K Automatic test sequences

only MXTRA 3 only MTECH+ & MXTRA

L-N -P E

ρE

GMC-I Messtechnik GmbH 3

Table of Contents Page Page

1 Scope of delivery ............................................................. 5

2 Applications ..................................................................... 5

2.1 Using Cable Sets and Test Probes ...............................................5

2.2 Overview of Features Included

with PROFITEST MASTER & SECULIFE IP Device Variants ..........6

3 Safety Features and Precautions ..................................... 6

4 Initial Start-Up .................................................................. 7

4.1 Preparation for use ......................................................................7

4.2 Installing or Replacing the Battery Pack .....................................7

4.3 Switching the Instrument On/Off .................................................7

4.4 Battery Test .................................................................................7

4.5 Charging the Battery Pack in the Tester .....................................7

4.6 Device Settings ...........................................................................8

5 General Notes ................................................................ 13

5.1 Connecting the Instrument ........................................................13

5.2 Automatic Settings, Monitoring and Shut-Off ...........................13

5.3 Measurement Value Display and Memory .................................13

5.4 Testing Earthing Contact Sockets for Correct Connection ........13

5.5 Help Function ............................................................................14

5.6 Setting Parameters or Limit Values using RCD Measurement as an

Example .....................................................................................14

5.7 Freely Selectable Parameter Settings or Limit Values ..............15

5.8 2-Pole Measurement with Fast or Semiautomatic Polarity Reversal ... 15

6 Measuring Voltage and Frequency ................................ 16

6.1 Single-Phase Measurement ......................................................16

6.1.1 Voltage Between L and N (U

with Country-Specific Plug Insert, e.g. SCHUKO .............................16

6.1.2 Voltage between L – PE, N – PE and L – L

with 2-Pole Adapter Connection ...................................................16

6.2 3-Phase Measurement (line-to-line voltage) and Phase Sequence ..... 17

Testing RCDs .......................................................................17

7.1 Measuring Contact Voltage (with reference to nominal residual current) with

Nominal Residual Current .........................................................18

7.2

Special Testing for Systems and RCCBs .........................................20

7.2.1 Testing Systems and RCCBs with Rising Residual Current (AC) for Type

AC, A/F, B/B+ and EV/MI RCDs ....................................................20

7.2.2 Testing Systems and RCCBs with Rising Residual Current (AC) for Type

B/B+ and EV/MI RCDs (nur MTECH+, MXTRA & SECULIFE IP) .......20

7.2.3 Testing RCCBS with 5 • IΔ

7.2.4 Testing of RCCBs which are Suited for

Pulsating DC Residual Current ......................................................21

7.3 Testing for Special RCDs ...........................................................22

7.3.1 System, Type RCD-S Selective RCCBs ..........................................22

7.3.2 PRCDs with Non-Linear Type PRCD-K Elements ............................22

7.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or comparable) ....................23

7.3.4 Type G or R RCCB .......................................................................24

7.4 Testing Residual Current Circuit Breakers in TN-S Systems .....25

7.5 Testing of RCD Protection in IT Systems with High Cable Capa-

citance (e.g. in Norway) ............................................................25

/3 Nominal Residual Current and Tripping Test with

L and PE

) a

L-N

N ............................................................. 21

L-PE

nd N and PE

N-PE

8 Testing of Breaking Requirements

Overcurrent Protective Devices, Measurement of Loop Impedance and Determination of Short-Circuit Current (functions Z

8.1 Measurements with Suppression of RCD Tripping ....................26

8.1.1 Measurement with Positive Half-Waves

(only MTECH+/MXTRA/SECULIFE IP) .............................................27

8.2 Evaluation of Measured Values .................................................27

Settings for Short-circuit current Calculation – Parameter IK ........28

8.3

and IK) ................................................. 26

L-PE

10 Earthing Resistance Measurement (R

10.1 Earthing Resistance Measurement – Mains Operated ..............31

10.2 Earthing Resistance Measurement – Battery Powered

(only MPRO & MXTRA) ...............................................................31

10.3 Earthing Resistance, Mains Powered – 2-Pole Measurement with 2Pole Adapter or Country-Specific Plug (Schuko) without Probe ... 32

10.4 Earthing Resistance Measurement, Mains Powered – 3-Pole Me-

asurement: 2-Pole Adapter with Probe ....................................33

10.5 Earthing Resistance Measurement, Mains Powered – Measurement of Earth Electrode Voltage (U

10.6 Earthing Resistance Measurement, Mains Powered – Selective Earthing Resistance Measurement with Current Clamp Sensor as

Accessory ..................................................................................35

10.7 Earthing Resistance Measurement, Battery Operated – 3-Pole

(only MPRO & MXTRA) ...............................................................37

10.8 Earthing Resistance Measurement, Battery Operated – 4-Pole

(only MPRO & MXTRA) ...............................................................38

10.9 Earthing Resistance Measurement, Battery Operated – Selective (4-pole) with Current Clamp Sensor and PRO-RE Measuring Adap-

ter as Accessory (only MPRO & MXTRA) ...................................40

10.10 Earthing Resistance Measurement, Battery Powered – Ground Loop Measurement (with current clamp sensor and transformer, plus PRO-

RE/2 measuring adapter as accessory) (only MPRO & MXTRA) ..... 41

10.11 Earthing Resistance Measurement, Battery Powered – Measurement of Soil Resistivity ρ

(only MPRO & MXTRA) ...............................................................42

Measuring Insulation Resistance ........................................ 44

11.1 General ......................................................................................44

11.2 Special Case: Earth Leakage Resistance (R

)

12 Measuring Low-Value Resistance

function) ........... 30

function) .........................34

) .....................46

EISO

up to 200 Ohm (protective

conductor and equipotential bonding conductor) ............... 47

12.1 Measurements with Constant Test Current ..............................48

12.2 Protective Conductor Resistance Measurement with Ramp Curve – Measurements on PRCDs with Current-monitored Protective Conductor Using PROFITEST PRCD Test Adapter as Accessory 49

13 Measurement with Accessory Sensors .......................... 50

13.1 Current Measurement with Current Clamp Sensor ................... 50

Special Functions – EXTRA Switch Position ..............................51

14.1 Voltage Drop Measurement (at ZLN) – ΔU Function ................. 52

14.2 Measuring the Impedance of Insulating Floors and Walls (standing surface insulation impedance) – Z

14.3 Testing Meter Start-Up with Earthing Contact Plug

– kWh Function (not SECULIFE IP) .............................................54

14.4 Leakage Current Measurement with PRO-AB Leakage Current Adapter as Accessory

Function (PROFITEST MXTRA & SECULIFE IP only) .............55

– I

14.5 Testing of Insulation Monitoring Devices – IMD Function

14.6

14.7

14.7.1 Applications ................................................................................59

14.8 Testing Residual Current Monitors

14.9 Testing the Operating States of Electric Vehicles at Charging Sta-

14.10 Test Sequences for Report Generation of Fault Simulations on

14.10.1 Selecting the PRCD under Test .....................................................62

14.10.2 Parameter Settings ......................................................................62

14.10.3 Test Sequence PRCD-S (single phase) – 11 Test Steps .................63

14.10.4 Test Sequence PRCD-S (three-phase) – 18 Test Steps ..................63

(PROFITEST MXTRA & SECULIFE IP only) ...................................56

Residual Voltage Test – Ures Function ( Intelligent Ramp – ta+ID Function (

– RCM Function (PROFITEST MXTRA only) ................................60

tions per IEC 61851 (MTECH+ & MXTRA only) ..........................61

PRCDs with PROFITEST PRCD Adapter (MXTRA only) ...............62

Function .........................53

PROFITEST MXTRA

only) ....... 59

15 Automatic Test Sequences – AUTO Function ................. 64

only) ..... 58

9 Measuring Line Impedance (Z

4 GMC-I Messtechnik GmbH

function) ................... 28

L-N

16 Database ........................................................................ 66

16.1 Creating Distributor Structures, General ...................................66

16.2 Transferring Distributor Structures ........................................... 66

16.3 Creating a Distributor Structure in the Test Instrument ........... 66

16.3.1 Creating Structures (example for electrical circuit) ......................... 67

16.3.2 Searching for Structural Elements ................................................68

16.4 Saving Data and Generating Reports ........................................ 69

16.4.1 Use of Barcode Scanners and RFID Readers .................................70

17 Operating and Display Elements ....................................71

18 LED Indications, Mains Connections and Potential Differen-

ces ..................................................................................73

19 Characteristic Values ...................................................... 82

20 Maintenance ...................................................................87

20.1 Firmware Revision and Calibration Information ....................... 87

20.2 Rechargeable Battery Operation, and Charging ....................... 87

20.2.1 Charging Procedure with Charger for Z502R ................................. 87

20.3 Fuses ........................................................................................ 87

20.4 Housing ..................................................................................... 87

21 Appendix .........................................................................88

21.1

Tables for the determination of maximum or minimum display values un-

der consideration of maximum measuring uncertainty: .......................88

21.2 At which values should/must an RCD actually be tripped?

Requirements for Residual Current Devices (RCDs) .................90

21.3 Testing Electrical Machines per DIN EN 60204 –

Applications, Limit Values ......................................................... 91

21.4 Periodic Testing per DGUV provision 3 (previously BGV A3) – Limit

Values for Electrical Systems and Operating Equipment .......... 92

21.5 List of Abbreviations and their Meanings ................................. 93

21.6 Keyword Index .......................................................................... 94

21.7 Bibliography .............................................................................. 95

21.7.1 Internet Addresses for Additional Information ............................... 95

22 Repair and Replacement Parts Service

Calibration Center and Rental Instrument Service .........96

23 Recalibration ..................................................................96

24 Product Support .............................................................96

1 Scope of delivery

1Test instrument 1 Earthing contact plug insert (country-specific) 1 2-pole measuring adapter and 1 cable for expansion into a

3-pole adapter (PRO-A3-II) 2 Alligator clips 1 Shoulder strap 1 Compact Master Battery Pack (Z502H) 1 Charger Z502R 1 DAkkS calibration certificate 1USB cable 1 Condensed operating instructions 1 Supplement Safety Information – Detailed operating instructions for download from our website

at www.gossenmetrawatt.com

2 Applications

This instrument fulfills the requirements of the applicable EU guidelines and national regulations. We confirm this with the CE marking. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH.

The PROFITEST MASTER and SECULIFE IP measuring and test instruments allow for quick and efficient testing of protective measures in accordance with DIN VDE 0100, part 600:2008 voltage installations; tests – initial tests), as well as (Austria), NIV/NIN SEV 1000 (Switzerland) and other country-spe-

(Erection of low-

ÖVE-EN 1

cific regulations. The test instrument is equipped with a microprocessor and complies with IEC 61557/DIN EN 61557/VDE 0413 regulations:

Part 1: General requirements Part 2: Insulation resistance Part 3: Loop resistance Part 4: Part 5: Earth resistance Part 6: Effectiveness of residual current devices (RCD) in TT, TN

Part 7: Phase sequence Part 10:Electrical safety in low-voltage systems up to 1000 V AC

Part 11:Effectiveness of type A and type B residual current moni-

The test instrument is especially well suited for:

•System setup

• Initial start-up

• Periodic testing

• Troubleshooting in electrical systems All of the values required for approval reports (e.g. for ZVEH) can

be measured with this instrument. All acquired data can be archived, in addition to the measurement

and test reports which can be printed out at a PC. This is of special significance where product liability is concerned.

The applications range of the test instruments covers all alternating and three-phase current systems with nominal voltages of 230 V / 400 V (300 V / 500 V) and nominal frequencies of 16 50 / 60 / 200 / 400 Hz.

The following can be measured and tested with the instruments:

• Voltage / frequency / phase sequence

• Loop impedance / line impedance

• Residual current devices (RCDs)

• Insulation monitoring devices (IMDs) (only

• Residual current monitoring devices (RCMs) (only MXTRA)

• Earthing resistance / earth electrode potential

• Standing surface insulation resistance / insulation resistance

• Earth leakage resistance

• Low-value resistance (potential equalization)

• Leakage currents with current transformer clamp

• Residual voltage (only MXTRA)

• Voltage drop

• Leakage current with leakage current adapter

• Meter start-up (not

• Cable length

Refer to section 21.3 regarding testing of electrical machines in accordance with DIN EN 60204.

Refer to section 21.4 regarding periodic testing in accordance with DGUV provision 3 (previously BGV A3).

Resistance of earth connection and equipotential bonding

and IT systems

and 1500 V DC – Equipment for testing, measuring or monitoring of protective measures

tors (RCMs) in TT, TN and IT systems

MXTRA

SECULIFE IP

)

/3/

)

2.1 Using Cable Sets and Test Probes

• 2 or 3-pole measuring adapter included

• 2-pole measuring adapter with 10 m cable as optional accessory: PRO-RLO II (Z501P)

• KS24 cable set as optional accessory (GTZ3201000R0001)

Measurements per DIN EN 61010-031 may only be performed in environments in accordance with measuring categories III and IV with the safety cap attached to the test probe at the end of the measurement cable.

In order to establish contact inside 4 mm jacks, the safety caps have to be removed by prying open the snap fastener with a pointed object (e.g. the other test probe).

GMC-I Messtechnik GmbH 5

2.2 Overview of Features Included

with PROFITEST MASTER & SECULIFE IP Device Variants

PROFITEST ... (Article Number)

PRO

TECH+

XTRA

(M520R)

(M520S)

MBASE+

Testing of residual current devices (RCDs)

measurement without tripping RCD ✓✓✓✓✓

Tripping time measurement Measurement of tripping current I Selective, SRCDs, PRCDs, type G/R ✓✓✓✓ AC/DC sensitive RCDs, type B, B+ and EV/MI —— ✓✓ Testing of IMDs ——— ✓ Testing of RCMs ——— ✓ — Testing for N-PE reversal

Measurement of loop impedance Z

Fuse table for systems without RCDs ✓✓✓✓ Without tripping the RCD, fuse table ——✓✓ With 15 mA test current

RCD

Earthing resistance RE (mains operation)

I-U measuring method (2/3-wire measuring method via measuring adapter: 2-wire/2-wire + probe)

Earthing resistance RE (battery operation)

3 or 4-wire measurement via PRO-RE adapter

Soil resistivity

(4-wire measurement via PRO-RE adapter)

Selective earthing resistance RE (mains operation)

with 2-pole adapter, probe, earth electrode and current clamp sensor (3-wire measuring method)

Selective earthing resistance RE (battery operation)

with probe, earth electrode and current clamp sensor (4-wire measuring method via PRO-RE adapter and current clamp sensor)

Earth loop resistance R

with 2 clamps (current clamp sensor direct and current clamp transformer via PRO-RE/2 adapter)

Measurement of equipotential bonding R

automatic polarity reversal

Insulation resistance R

variable or rising test voltage (ramp)

Voltage U

Special measurements Leakage current (with clamp) I Phase sequence ✓✓✓✓ Earth leakage resistance R Voltage drop (ΔU) ✓✓✓✓ Standing-surface insulation Z Meter start-up (kWh-Test) ✓✓✓✓— Leakage current with PRO-AB adapter (IL) Residual voltage test (Ures) Intelligent ramp (ta + ΔI) Electric vehicles at charging stations

(IEC 61851) Report generation of fault simulations on

PRCDs with PROFITEST PRCD adapter

Features Selectable user interface language Memory (database for up to 50,000 objects) ✓✓✓✓ Automatic test sequence function ✓2✓ ✓✓ RS 232 port for RFID/barcode scanner USB port for data transmission ✓✓✓✓ Interface for Bluetooth® ——✓✓ ETC user software for PC ✓✓✓✓ Measuring category: CAT III 600 V / CAT IV

300 V DAkkS calibration ✓✓✓✓

The so-called live measurement is only advisable if there is no bias current within

the system. Only suitable for motor circuit breaker with low nominal current

currently available languages: D, GB, I, F, E, P, NL, S, N, FIN, CZ, PL

/ U

L-N

without tripping the

ρE (battery operation)

ELOOP

INS

/ U

L-P E

N-PE

/ Z

L-P E

L-N

— ✓ — ✓ —

(battery operation)

— ✓ — ✓ —

/ f ✓✓✓✓

, I

AMP

E(ISO)

——— ——— ———

——✓✓—

———

(M520N)

✓✓✓✓ ✓✓✓✓

✓✓✓✓

(M520P)

SECULIFE IP

✓ ✓ — ✓ —

✓

—

3 Safety Features and Precautions

This instrument fulfills all requirements of applicable European and national EC directives. We confirm this with the CE mark. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH.

(M520U)

The electronic measuring and test instrument is manufactured and tested in accordance with safety regulations IEC 61010-1/ DIN EN 61010-1/VDE 0411-1 and EN 61557.

✓

Safety of the operator, as well as that of the instrument, is only

✓

assured when it is used for its intended purpose.

✓ ✓

Read the operating instructions thoroughly and carefully before using

✓

your instrument. Follow all instructions contained therein. Make sure that the operating instructions are available to all users of the instrument.

✓

Tests may only be executed by a qualified electrician.

Grip and hold the test plug and test probes securely when they

✓

have been inserted, for example, into a socket. Danger of injury

✓

exists if tugging at the coil cord occurs, which may cause the test

✓

plug or test probes to snap back.

The measuring and test instrument may not be placed into service:

✓

• If the battery compartment lid has been removed

• If external damage is apparent

• If connector cable or measuring adapters are damaged

•If the instrument no longer functions flawlessly

• After a long period of storage under unfavorable conditions (e.g. humidity, dust, temperature)

✓

Exclusion of Liability

When testing systems with RCCBs, the latter may switch off. This may

occur even though the test does not normally provide for it. Leakage currents may be present which, in combination with the test current of the test instrument, exceed the shutdown threshold value of the RCCB. PCs which are operated in proximity to such RCCB systems may switch off as a consequence. This may result in inadvertent loss of data. Before conducting tests, precautions should therefore be taken to ensure that all data and programs are adequately saved, and the computer should be switched off if

✓

necessary. The manufacturer of the test instrument assumes no liability for any direct or indirect damage to equipment, comput-

✓

ers, peripheral equipment or data bases when performing tests.

✓

Opening of Equipment / Repair

The equipment may be opened only by authorized service per-

✓

sonnel to ensure the safe and correct operation of the equipment

✓

and to keep the warranty valid.

✓

Even original spare parts may be installed only by authorized ser-

✓

vice personnel.

✓

In case the equipment was opened by unauthorized personnel, no warranty regarding personal safety, measurement accuracy,

✓

conformity with applicable safety measures or any consequential damage is granted by the manufacturer.

Any warranty claims will be forfeited when the warranty seal has been damaged or removed.

Meaning of Symbols on the Instrument

Warning concerning a point of danger

✓ ✓ ✓ ✓ ✓ ✓ ✓

✓

(Attention, observe documentation!)

Protection class II device

Charging socket for extra-low direct voltage (charger Z502R)

Attention! Only rechargeable batteries may be inserted when the charger is connected.

This device may not be disposed of with the trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term “WEEE”.

EC mark of conformity

6 GMC-I Messtechnik GmbH

Any warranty claims will be forfeited when the warranty

Attention!

Note

Attention!

XY123

2012-06

D-K

15080-01-01

Consecutive number

Registration number Date of calibration (year – month)

Deutsche Akkreditierungsstelle GmbH – calibration lab

BAT

seal has been damaged or removed.

Calibration Seal (blue seal):

See also “Recalibration” on page 96.

Data Backup

We advise you to regularly transmit your stored data to a PC in order to prevent potential loss of data in the test instrument.

We assume no responsibility for any data loss. We recommend the following PC software programs for data

processing and management:

•ETC

• E-Befund Manager (Austria)

•Protokollmanager

• PS3 (documentation, management, report generation and monitoring of deadlines)

• PC.doc-WORD/EXCEL (report and list generation)

• PC.doc-ACCESS (test data management)

4 Initial Start-Up

4.1 Preparation for use

Before putting the test instrument into service and using it for the first time, the lamination sheets must be removed from the two sensor surfaces (finger contacts) of the test plug in order to ensure that contact voltage is reliably detected.

When Using a Battery Holder:

It is imperative that you pay attention to the correct polarity when inserting the rechargeable batteries. If a battery has been inserted with incorrect polarity, it is not detected by the instrument and may lead to battery leakage. Individual rechargeable batteries may only be charged externally.

➭ Slide the new battery pack/filled battery holder into the battery

compartment. The holder can only be inserted to its proper position.

➭ Replace the lid and re-tighten the screw.

4.3 Switching the Instrument On/Off

The test instrument is switched on by pressing the ON/START key. The menu which corresponds to the momentary selector switch position is displayed.

The instrument can be switched off manually by simultaneously pressing the MEM and HELP keys.

After the period of time selected in the SETUP menus has elapsed, the instrument is switched off automatically (see “Device Settings”, section 4.6.

4.4 Battery Test

If battery voltage has fallen below the permissible lower limit, the pictograph shown at the right appears. “Low Batt!!!” is also displayed along with a battery symbol. The instrument does not function if the batteries have been depleted excessively, and no display appears.

4.5 Charging the Battery Pack in the Tester

4.2 Installing or Replacing the Battery Pack

Before opening the battery compartment, disconnect the instrument from the measuring circuit (mains) at all poles!

See also section 20.2 on page 87 concerning charging the Kompkt Akku Pack Master (Z502H) and the battery charger Z502R.

Use Kompakt Akku Pack Master (Z502H), if possible, which is either included in the standard equipment or available as an accessory, with heat-sealed battery cells. Do not use any battery holders which can

be filled with individual batteries. This ensures that always a complete set of batteries is replaced and all rechargeable batteries are inserted with correct polarity in order to prevent leakage from the batteries.

Only use commercially available battery packs if you charge them externally. The quality of these sets cannot be verified and this may, in

unfavourable cases, lead to heating and deformation (during the charging in the device). Dispose the battery packs or the individual rechargeable batteries in an environmentally sound fashion when their service life has nearly expired (approx. 80% charging capacity).

➭ Loosen the slotted screw for the battery compartment lid on

the back and remove the lid.

➭ Remove the discharged battery pack or the battery holder.

Use only the charger Z502R to charge the Kompakt Akku- Pack Master (Z502H) which has already been inserted into the test instrument.

Make sure that the following conditions have been fulfilled before connecting the charger to the charging socket:

– Kompakt Akku-Pack Master (Z502H) has been

installed, no commercially available battery packs, no individual rechargeable batteries, no standard batteries

– The test instrument has been disconnected from the

measuring circuit at all poles

– The instrument must remain off during charging.

Refer to section 20.2.1 with regard to charging the battery pack which has been inserted into the tester.

If the batteries or the battery pack have not been used or recharged for a lengthy period of time (> 1 month), thus resulting in excessive depletion:

Please note that the system clock stops in this case and must be set to the correct time after the instrument has been restarted.

GMC-I Messtechnik GmbH 7

4.6 Device Settings

SETUP

LED and LCD test menu

Rotary switch balancing

Brightness/contrast menu

Software revision level Calibration date

Display: date / time

Display: automatic shutdown

of display illumination after 15 s.

of the tester after 60 s.

Time, language, profiles

and battery test menu

Return to main menu

MAINS LED: test green

MAINS LED: test red

UL/RL LED: test red

RCD-FI LED: test red

Cell test

Inverse cell test

Hide all pixels

Show all pixels

Acoustic signal test

Return to main menu

Increase brightness

Bluetooth

submenu →

DB-MODE submenu →

Brightness/contrast submenu →

Set time →

Profiles for

Default settings

→

distribution structures

→

User interface language

→

3a 3b

Set date →

On-time for display illumination / tester

Return to submenu

Display Illumination On-time

Bluetooth® and Brightness Plus Contrast Settings Time, On-Time and Default Settings

Menu Selection for Operating Parameters

LED tests LCD and Acoustic Signal Tests

Test Instrument On-Time

Select inspector (change via ETC)

No automatic shut-down, continuously on

logged in test technician

8 GMC-I Messtechnik GmbH

LED and LCD test menu

Rotary switch balancing

Brightness/contrast menu

Software revision level Calibration date

Display: date / time

Display: automatic shutdown

of display illumination after 15 s.

of the tester after 60 s. Time, language, profiles

and battery test menu

Return to main menu

Bluetooth

submenu →

Brightness/contrast submenu →

Set time →

Profiles for

Default settings

→

distribution structures

→

User interface language

→

3a 3b

Set date →

On-time for display illumination / tester

Set time

Menu Selection for Operating Parameters

Bluetooth® and Brightness Plus Contrast Settings Set Time, Language, Profiles, Acoustic Signal

Set date

Select time

Increase

hours

Activate settings

minutes

Increase seconds

Return to submenu

Decrease

hours

minutes

Decrease

seconds

Select date

Increase

day

Activate settings

month

Increase year

Return to submenu

Decrease

day

month

Decrease

year

Enter and select a new inspector (change/deletion via ETC only)

logged in test technician

DB-MODE submenu

→

GMC-I Messtechnik GmbH 9

Significance of Individual Parameters

Note

Attention!

2 2

3d3e3f

Return to previous menu

Increase brightness

Decrease brightness

Increase contrast

Decrease contrast

➭ Press ESC in order to return to the main menu.

Test Instrument On-Time

The period of time after which the test instrument is automatically shut off can be selected here. This selection has a considerable influence on the service life and the charging status of the batteries.

On-Time for LCD Illumination

The period of time after which LCD illumination is automatically shut off can be selected here. This selection has a considerable influence on the service life and the charging status of the batteries.

Submenu: Rotary Switch Balancing

Proceed as follows in order to precision adjust the rotary switch:

1 Press the TESTS Rotary Switch / Battery Test softkey in order to

access the rotary switch balancing menu. 2 Then press the softkey with the rotary switch symbol. 3 Turn the rotary switch clockwise to the next respective measuring

function (IDN first after SETUP). 4 Press the softkey which is assigned to the rotary switch at the LCD.

After pressing this softkey, the display is switched to the next mea-

suring function. Labeling in the LCD image must correspond to the

actual position of the rotary switch.

level bar in the LCD image of the rotary switch should be

The located in the middle of the black field, and is supplemented at the right-hand side with a number within a range of -1 to 101. This value should be between 45 and 55. In the case of -1 or 101, the position of rotary knob does not coincide with the measuring function selected at the LCD.

5 If the displayed value is not within this range, readjust the

position by pressing the readjust softkey. A brief acoustic

signal acknowledges readjustment.

If labeling in the LCD image of the rotary switch does not correspond with its actual position, a continuous acoustic signal is generated as a warning when the readjust softkey is pressed.

6 Return to point 2 and continue. Repeat this procedure until all

rotary switch functions have been tested, and if necessary

readjusted.

➭ Press ESC in order to return to the main menu.

Submenu: Battery Level Query

Data and sequences are lost when the language, the profile or DB mode is changed, or if the instrument is reset to default values!

Back up your structures, measurement data and sequences to a PC before pressing the respective key. The prompt window shown at the right asks you to confirm deletion.

User Interface Language (CULTURE)

➭ Select the desired country setup with the appropriate country

code. Attention: all existing structures, data and sequences are de-

leted, see note above!

Profiles for Distributor Structures (PROFILES)

The profiles are laid out in a tree structure. The tree structure for the utilized PC evaluation program may differ from that of the PROFITEST MASTER. For this reason, the PROFITEST MASTER provides the user with the opportunity of adapting this structure.

Selecting a suitable profile determines which object combinations are made possible. For example, this makes it possible to create a distributor which is subordinate to another, or to save a measurement to a given building.

➭ Select the PC evaluation program you intend to use.

Attention: all existing structures, data and sequences are deleted, see note above!

If you have not selected a suitable PC evaluation program and, for example, if measured value storage to the selected location within the structure is not possible, the pop-up window shown at the right appears.

Default Settings (GOME SETTING)

The test instrument is returned to its original default settings when this key is activated.

Attention: all existing structures, data and sequences are deleted, see note above!

Adjusting Brightness and Contrast

If battery voltage has dropped to 8.0 V or less, the UL/RL LED lights up red and an acoustic signal is generated as well.

10 GMC-I Messtechnik GmbH

Measuring Sequence

If battery voltage drops to below 8.0 V during the course of a measuring sequence, this is indicated by means of a pop-up window only. Measured values are invalid. The measurement results cannot be saved to memory.

DB MODE – Presenting the Database in Text Mode or ID Mode

Note

When Bluetooth® is active (= ON), the

Bluetooth

icon

appears in the header instead of BAT, and an interface icon appears instead of MEM.

A closed interface icon indicates an active Bluetooth connection with data transmission.

Figure 1

Figure 2

Figure 3 Figure 4

The DB MODE functions are available as of firmware version 01.05.00 of the test instrument and as of ETC version 01.31.00.

Creating Structures in TXT MODE

By default, the database in the test instrument is set to text mode, „TXT“ is indicated in the header. You can create structural elements in the test instrument und add designations in plain text, e. g. Customer XY, Distributor XY and Electrical Circuit XY.

Creating Structures in ID MODE

Alternatively, you can work in the ID mode. „ID“ is indicated in the header. You can create structural elements in the test instrument which can be labelled with ID numbers at your discretion.

Switching Bluetooth® On/Off (

only)

MTECH+/MXTRA/

SECULIFE IP

When data are transferred from the test instrument to the PC or ETC, ETC always retains the presentation (TXT or ID mode) selected in the test instrument. When data are transferred from the PC or ETC to the test instrument, the test instrument always retains the presentation selected in ETC. So, the respective receiver of the data always adopts the presentation of the sender.

In the test instrument, structures can either be created in text mode or in ID mode. In the ETC software, however, designations and ID numbers are always allocated.

If no texts or ID numbers have been allocated when creating the structures in the test instrument, ETC generates the missing entries automatically. They can be subsequently edited in the ETC software and transferred back to the test instrument if required.

If your PC is equipped with a Bluetooth® interface, wireless communication is possible between the MTECH+, MXTRA or SECULIFE IP and ETC user software for the transfer of data and test structures.

One-time only authentication of the respective PC with the test instrument is a prerequisite for wireless data exchange. The function selector switch must be in the SETUP position to this end. The correct Bluetooth before each data transmission sequence.

Activate the Bluetooth® interface at the test instrument during data transmission only. Interface power consumption reduces battery service life when activated continuously.

COM port must also be selected in ETC

GMC-I Messtechnik GmbH 11

If several test instruments are within range during authentication, the respective name should be changed in order to rule out the possibility of a mix-up. Blanks may not be used. The default pin code, namely “0000”, can be changed, but this is unnecessary as a rule. As shown in figure 3, the MAC address of the test instrument is displayed in the footer as hardware information.

Render your test instrument visible prior to authentication, and subsequently invisible for security reasons.

Steps Required for Authentication

Note

Make sure that the test instrument is within range of the PC (roughly 5 to 8 meters). Activate Bluetooth (see figure 1) and at your PC.

The function selector switch must be in the SETUP position to this end.

Make sure that the test instrument (see figure 3) and your PC are visible for other Bluetooth

devices: In the case of the test instrument, the word “visible” must be dis- played underneath the eye symbol. Use your Bluetooth

PC driver software to add a new Bluetooth® device. In most cases, this is accomplished with the help of the “Add new connection” or “Add Bluetooth® device” button.

The following steps may vary, depending on which Bluetooth driver software is used. Basically, a PIN code must be entered at the PC. The default setting for the PIN code is “0000”, and is displayed in the main Bluetooth

menu (see figure 1) at the test instrument. Subsequently, or previously, an authentication message must be acknowledged at the test instrument (see figure 4).

If authentication has been successful, a corresponding message appears at the test instrument. Furthermore, the authenticated PC is displayed in the “Trusted Devices” menu at the test instrument (see figure 2).

The MTECH+, MXTRA or the SECULIFE IP should now also be listed as a device in your Bluetooth tion is also provided here regarding the utilized COM port. With the help of your Bluetooth

PC driver software. Further informa-

PC driver software, you’ll need to find out which COM port is used for the Bluetooth port is frequently displayed after authentication, but if this is not the case, this information provided by your Bluetooth® PC driver software.

ETC includes a function for automatically ascertaining the utilized COM port after successful authentication has been completed (see screenshot below).

If the test instrument is within range of your PC (5 to 8 meters), wireless data exchange can now be initiated with the help of ETC by clicking Bluetooth

in the “Extras” menu. The number of the correct COM port (e.g. COM40) must be entered to ETC when data exchange is started (see screenshot below).

Alternatively, the COM port number can be selected automatically by clicking the “Find Bluetooth Device” item in the menu.

at the test instrument

connection. This

Firmware Revision and Calibration Information (example)

➭ Press any key in order to return to the main menu.

Firmware Update with the MASTER Updater

The layout used for the entire range of the test instruments makes it possible to adapt instrument software to the latest standards and regulations. Beyond this, suggestions from customers result in continuous improvement of the test instrument software, as well as new functions.

In order to assure that you can take advantage of all of these benefits without delay, the MASTER Updater allows you to quickly and completely update your test instrument software on-site.

The user interface can be set to either English, German or Italian.

As a registered user, you’re entitled to download the MASTER Updater and the current firmware version free of charge from the myGMC page.

Entering and Selecting a New Inspector

See also section 5.7 page 15 regarding the entry of a text.

12 GMC-I Messtechnik GmbH

5 General Notes

Note

Attention!

5.1 Connecting the Instrument

For systems with earthing contact sockets, connect the instrument to the mains with the test plug to which the appropriate, country-specific plug insert is attached. Voltage between phase conductor L and the PE protective conductor may not exceed 253 V! Poling at the socket need not be taken into consideration. The instrument detects the positions of phase conductor L and neutral conductor N and automatically reverses polarity if necessary. This does not apply to the following measurements:

– Voltage measurement in switch position U – Insulation resistance measurement – Low-value resistance measurement

The positions of phase conductor L and neutral conductor N are identified on the plug insert.

If measurement is to be performed at three-phase outlets, at distribution cabinets or at permanent connections, the measuring adapter must be attached to the test plug (see also table 16.1). Connection is established with the test probes: one at PE or N and the other at L.

The 2-pole measuring adapter must be expanded to 3 poles with the included measurement cable for the performance of phase sequence testing.

Contact voltage (during RCCB testing) and earthing resistance can be, and earth-electrode potential, standing surface insulation resistance and probe voltage must be measured with a probe. The probe is connected to the probe connector socket with a 4 mm contact protected plug.

5.2 Automatic Settings, Monitoring and Shut-Off

The test instrument automatically selects all operating conditions which it is capable of determining itself. It tests line voltage and frequency. If these lie within their valid nominal ranges, they appear at the display panel. If they are not within nominal ranges, prevailing voltage (U) and frequency (f) are displayed instead of U and f

Contact voltage which is induced by test current is monitored for each measuring sequence. If contact voltage exceeds the limit value of > 25 V or > 50 V, measurement is immediately interrupted. The U

If battery voltage falls below the allowable limit value the instrument cannot be switched on, or it is immediately switched off.

The measurement is interrupted automatically, or the measuring sequence is blocked (except for voltage measuring ranges and phase sequence testing) in the event of:

• Impermissible line voltages (< 60 V, > 253 V / > 330 V / > 440 V or > 550 V) for measurements which require line voltage

• Interference voltage during insulation resistance or low resistance measurements

• Overheating at the instrument. As a rule, excessive temperatures only occur after approximately 50 measurement sequences at intervals of 5 seconds, when the rotary selector switch is set to the Z position. If an attempt is made to start a measuring sequence, an appropriate message appears at the display panel.

The instrument only switches itself off automatically after completion of an automatic measuring sequence, and after the predetermined on-time has expired (see sectionl 4.3). On-time is reset to its original value as defined in the setup menu, as soon as any key or the rotary selector switch is activated.

The instrument remains on for approximately 75 seconds in addition to the preset on-time for measurements with rising residual current in systems with selective RCDs.

The instrument always shuts itself off automatically!

LED lights up red.

L/RL

L-PE

oder Z

L-N

5.3 Measurement Value Display and Memory

The following appear at the display panel:

• Measurement values with abbreviations and units of measure

• Selected function

• Nominal voltage

• Nominal frequency

• Error messages Measurement values for automatic measuring sequences are

stored and displayed as digital values until the next measurement sequence is started, or until automatic shut-off occurs. If the upper range limit is exceeded, the upper limit value is displayed and is preceded by the “>” symbol (greater than), which indicates measurement value overrun.

The depiction of LEDs in these operating instructions may vary from the LEDs on the actual instrument due to product improvements.

5.4 Testing Earthing Contact Sockets for Correct Connection

The testing of earthing contact sockets for correct connection prior to protective measures testing is simplified by means of the instrument’s error detection system.

The instrument indicates improper connection as follows:

• Impermissible line voltage (< 60 V or > 253 V): The MAINS/NETZ LED blinks red and the measuring sequence is disabled.

• Protective conductor not connected or potential to earth ≥ 50 V at ≥ 50 Hz (switch position U – single-phase measurement): If the contact surfaces are touched (finger contact*) while PE is being contacted (via the country-specific plug insert, e.g. SCHUKO, as well as via the PE test probe at the 2-pole adapter) PE appears (only after a test sequence has been started). The U

the test plug must be touched directly with the finger/palm without any skin protection applied, see also section 4.1.

* for reliably detecting the contact voltages, both sensor surfaces at

• Neutral conductor N not connected (during mains dependent measurements): The MAINS/NETZ LED blinks green.

• One of the two protective contacts is not connected: This is checked automatically during testing for contact current U leads to one of the following displays, depending upon poling

. Poor contact resistance at one of the contacts

IΔN

of the plug: – Display at the connection pictograph:

PE interrupted (x), or underlying protective conductor bar interrupted with reference to keys at the test plug

Cause: voltage measuring path interrupted Consequence: measurement is disabled

– Display at the connection pictograph:

Overlying protective conductor bar interrupted with reference to keys at the test plug

Cause: current measuring path interrupted Consequence: no measured value display

See also “LED Indications, Mains Connections and Potential Differences” beginning on page 73.

Reversal of N and PE in a system without RCCBs cannot be detected and is not indicated by the instrument. In a system including an RCCB, the RCCB is tripped during “contact voltage measurement without RCCB tripping” (automatic Z PE are reversed.

and RCD/FI LEDs light up red as well.

L/RL

measurement), insofar as N and

L-N

GMC-I Messtechnik GmbH 13

5.5 Help Function

The following information can be displayed for each switch position and basic function after it has been selected with the rotary selec-

tor switch:

• Wiring diagram

• Measuring range

• Nominal range of use and measuring uncertainty

• Nominal value

➭ Press the HELP key in order to query online help: ➭ If several pages of help are available for the respective mea-

suring function, the HELP key must be pressed repeatedly.

➭ Press the ESC key in order to exit online help.

5.6 Setting Parameters or Limit Values using RCD Measurement as an Example

1 Access the submenu for setting the desired parameter. 2 Select a parameter using the ↑ or ↓ scroll key. 3 Switch to the setting menu for the selected parameter with the → scroll

key.

4 Select a setting value using the ↑ or ↓ scroll key. 5 Acknowledge the setting value with the ↵ key. This value is transferred to

the setting menu.

6 The setting value is not permanently accepted for the respective measure-

ment until menu. You can return to the main menu by pressing ESC instead of without accepting the newly selected value.

✓ is pressed, after which the display is returned to the main

✓,

Parameter Lock (plausibility check)

Individually selected parameter settings are checked for plausibility before transfer to the measurement window.

If you select a parameter setting which doesn’t make sense in combination with other parameter settings which have already been entered, it’s not accepted. The previously selected parameter setting remains unchanged.

Remedy: Select another parameter setting.

14 GMC-I Messtechnik GmbH

5.7 Freely Selectable Parameter Settings or Limit Values

Note

Select value / U/M.

↵ Accept value / U/M.

Delete characters.

✓ Save value (to list).

Select editable value.

Select the EDIT menu.

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

L1-PE L2-PE L3-PE

N-PE

L+N-PE

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

L-PE

L-N

L1-PE L2-PE L3-PE

iso

L1-PE L2-PE L3-PE

N-PE

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

L1-PE L2-PE L3-PE

N-PE

L+N-PE

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

L-PE

L-N

L1-PE L2-PE L3-PE

iso

L1-PE L2-PE L3-PE

N-PE

L1-N L2-N

L3-N L1-L2 L2-L3 L1-L3

In addition to fixed values, other values can be freely selected within predefined limits for certain parameters, if the symbol for the EDIT menu (3) appears at the end of the list of setting values.

Freely Selecting a Limit Value or Nominal Voltage

5.8 2-Pole Measurement with Fast or Semiautomatic Polarity Reversal

Fast, semiautomatic polarity reversal is possible for the following measurements:

• Voltage U

• Loop impedance Z

• Internal line resistance measurement Z

• Insulation resistance, R

LP-E

L-N

INS

Fast Polarity Reversal at the Test Plug

The polarity parameter is set to AUTO. Fast and convenient switching amongst all polarity variants, or

switching to the parameter settings submenu, is possible by pressing the I

key at the instrument or the test plug.

ΔN

1 Open the submenu for setting the desired parameter (no figure, see section

5.6).

2 Select parameter (U

5.6).

3 Select a setting value with the help of the icon and the ↑ or ↓ scroll

key.

4 Select the edit menu: Press the key with the icon.

5 Select the desired value or unit of measure with the LEFT or RIGHT scroll

key. The value or unit of measure is accepted by pressing the ↵ key. The entire value is acknowledged by selecting The new limit value or nominal value is added to the list.

GMC-I Messtechnik GmbH 15

Observe predefined limits for the new setting value. New, freely selected limit values or nominal values included in the parameters list can be deleted/edited at the PC with the help of ETC software. When the upper limit value is exceeded, this value is accepted (in the example: 65 V), when the limit value is fallen short of, the predefined lower limit value (25 V) is accepted.

) using the ↑ or ↓ scroll key (no figure, see section

✓ and then pressing the ↵ key.

Semiautomatic Polarity Reversal in Memory Mode

The polarity parameter is set to AUTO. If testing is to be conducted with all polarity variants, automatic

polarity changing takes place after each measurement when the “Save” button is pressed.

Polarity variants can be skipped by pressing the I instrument or the test plug.

key at the

ΔN

6 Measuring Voltage and Frequency

Select Measuring Function

Switch Between Single and 3-Phase Measurement

Press the softkey shown at the left in order to switch back and forth between single and 3-phase measurement. The selected phase measurement is displayed inversely (white on black).

6.1 Single-Phase Measurement

Connection

6.1.2 Voltage between L – PE, N – PE and L – L with 2-Pole Adapter Connection

Press the softkey shown at the left in order to switch back and forth between the country-specific plug insert, e.g. SCHUKO, and the 2-pole adapter. The selected connection type is displayed inversely (white on black).

Refer to section 5.8 regarding 2-pole measurement with fast or semiautomatic polarity reversal.

A probe must be used in order to measure probe voltage U

6.1.1 Voltage Between L and N (U a

nd N and PE

) with Country-Specific Plug Insert, e.g.

N-PE

L-N

L and PE

L-P E

)

SCHUKO

S-PE

16 GMC-I Messtechnik GmbH

6.2 3-Phase Measurement (line-to-line voltage) and Phase

Note

Clockwise

Counter-Clockwise

ΔN

-------

ΔN

(measurement up to 1000 ms)

Sequence

Connection

The measuring adapter (2-pole) is required in order to connect the instrument, and can be expanded to a 3-pole measuring adapter with the included measurement cable.

➭ Press softkey U3~.

7 Testing RCDs

The testing of residual current devices (RCDs) includes:

• Visual inspection

•Testing

• Measurement Use the test instrument for testing and measurement.

Measuring Method

The following must be substantiated by generating a fault current downstream from the RCD:

• That the RCD is tripped no later than upon reaching its nominal fault current value

• That the continuously allowable contact voltage value U agreed upon for the respective system is not exceeded

This is achieved by means of:

• Contact voltage measurement, 10 measurements with fullwaves and extrapolation of I

ΔN

A clockwise phase sequence is required at all 3-phase electrical outlets.

• Measurement instrument connection is usually problematic with CEE outlets due to contact problems. Measurements can be executed quickly and reliably without contact problems with the help of the Z500A variable plug adapter set available from GMC.

• Connection for 3-wire measurement, plug L1-L2-L3 in clockwise direction as of PE socket

Direction of rotation is indicated by means of the following displays:

See section 18 regarding all indications for the mains connection test.

• Substantiation of tripping within 400 ms or 200 ms with IΔN

• Substantiation of tripping with current rising residual current: This value must be between 50% and 100% of I about 70%).

(usually

ΔN

• No premature tripping with the test instrument, because testing is begun with 30% residual current (if no bias current occurs within the system).

RCD/FI Table Type of Differential

Current

Suddenly occurring

Alternating current

Slowly rising

Correct RCD/RCCB Function

Typ e AC

✔

Typ e A, F

✔✔✔

Typ e B*/

B+*

Type EV*

Voltage Polarity

If the installation of single-pole switches to the neutral conductor is prohibited by the standards, voltage polarity must be tested in order to assure that all existing single-pole switches are installed to the phase conductors.

Pulsating direct current

Direct current

Direct current up to 6 mA

* PROFITEST MTECH+, PROFITEST MXTRA & SECULIFE IP

Suddenly occurring

Slowly rising

✔✔✔

✔✔

GMC-I Messtechnik GmbH 17

✔

Test Standard

Note

Attention!

ΔN

Nominal residual

Type 1: RCD, SRCD, PRCD etc.

Nominal current: 6 ... 125 A

Type 2: AC , A/F , B/B+ *

EV/MI

* Type B/B+/EV/MI = AC/DC sensitive

current:

10 ... 500 mA

Phase displacement: 0°/180°

X times tripping current:

Negative/positive half-wave

Negative/positive direct current

1, 2, 5 (I

ΔN

max. 300 mA)

Waveform:

Connection:

without/with probe

System type:

TN/TT, IT

Contact voltage:

Time to trip:

< 25 V, < 50 V, < 65 V

The following must be substantiated per DIN VDE 0100 part 600: 2008:

– Contact voltage occurring at nominal residual current may not

exceed the maximum allowable value for the system.

– Tripping of the RCCB must occur within 400 ms (1000 ms for

selective RCDs) at nominal residual current.

7.1 Measuring Contact Voltage (with reference to nominal residual current) with

/3 Nominal Residual Current and

Tripping Test with Nominal Residual Current

Select Measuring Function

Important Notes

•The PROFITEST MASTER allows for simple measurements at all types of RCDs. Select RCD, SRCD, PRCD etc.

• Measurement must be executed at one point only per RCD (RCCB) within the connected electrical circuits. Low-resistance continuity must be substantiated for the protective conductor at all other connections within the electrical circuit (R or U

• The measuring instruments often display a contact voltage of

0.1 V in TN systems due to low protective conductor resistance.

• Be aware of any bias currents within the system. These may cause tripping of the RCDs during measurement of contact voltage U ments with rising current: Display = I

• Selective RCDs identified with an can be used as the sole means of protection for automatic shutdown if they adhere to the same shutdown conditions as non-selective RCDs (i.e. t

< 400 ms). This can be substantiated by measuring shut-

down time.

• Type B RCDs may not be connected in series with type A RCDs.

, or may result in erroneous displays for measure-

- I

bias_current

Bias Magnetization Only AC measurements can be performed with the 2pole adapter. Suppression of RCD tripping by means of bias magnetization with direct current is only possible via a country-specific plug insert, e.g. SCHUKO, or the 3pole adapter.

Connection

Set Parameters for I

ΔN

Measurement With or Without Probe

Measurements can be performed with or without a probe. Measurements with probe require that the probe and reference

earth are of like potential. This means that the probe must be positioned outside of the potential gradient area of the earth electrode (R

The distance between the earth electrode and the probe should be at least 20 m.

The probe is connected with a 4 mm contact protected plug. In most cases this measurement is performed without probe.

Testing for the absence of voltage at the probe can be performed with the U

18 GMC-I Messtechnik GmbH

) in the RCD safety circuit.

The probe is part of the measuring circuit and may carry a current of up to 3.5 mA in accordance with VDE 0413.

function (see also section 6.1 on page 16).

PROBE

1) Measuring Contact Current Without Tripping the RCD

Attention!

Note

Attention!

Measuring Method

The instrument uses a measuring current of only 1/3 nominal residual current for the determination of contact voltage U which occurs at nominal residual current. This prevents tripping of

IΔN

the RCCB. This measuring method is especially advantageous, because

contact voltage can be measured quickly and easily at any electrical outlet without tripping the RCCB.

The usual, complex measuring method involving testing for the proper functioning of the RCD at a given point, and subsequent substantiation that all other systems components requiring protection are reliably connected at low resistance values to the selected measuring point via the PE conductor, is made unnecessary.

N-PE Reversal Test

Additional testing is conducted in order to determine whether or not N and PE are reversed. The pop-up window shown at the right appears in the event of reversal.

2) Tripping Test after the Measurement of Contact Voltage

➭ Press the

The tripping test need only be performed at one measuring point for each RCCB.

If the RCCB is tripped at nominal residual current,

the MAINS/NETZ LED blinks red (line voltage disconnected) and time to trip ta and earthing resistance RE appear at the display panel.

If the RCCB is not tripped at nominal residual current,

the RCD/FI LED lights up red.

key.

Execute a data backup before starting measurement and switch off all consumers in order to prevent the loss of data in data processing systems.

Start Measurement

Amongst other values, contact voltage U ing resistance R

appear at the display panel.

The measured earthing resistance value RE is acquired with very little current. More accurate results can be obtained with the selector switch in the R The DC + function can be selected here for systems with RCCBs.

and calculated earth-

IΔN

position.

Unintentional Tripping of the RCD due to Bias Current within the System

If bias currents should occur, they can be measured with the help of a current clamp transformer as described in section 13.1 on page 50. The RCCB may be tripped during the contact voltage test if extremely large bias currents are present within the system, or if a test current was selected which is too great for the RCCB.

After contact voltage has been measured, testing can be performed to determine whether or not the RCCB is tripped within the selected time limits at nominal residual current.

Unintentional Tripping of the RCD due to Leakage Current in the Measuring Circuit

Measurement of contact voltage with 30% nominal residual current does not normally trip an RCCB. However, the trip limit may be exceeded as a result of leakage current in the measuring circuit, e.g. due to interconnected power consumers with EMC circuit, e.g. frequency converters and PCs.

Contact Voltage Too High

If contact voltage U nal residual current I the U

LED lights up red.

L/RL

If contact voltage U sequence, safety shut-down occurs.

Safety Shut-down: At up to 70 V, a safety shut-down is tripped within 3 seconds in accordance with IEC 61010.

Contact voltages of up to 70 V are displayed. If contact voltage is greater than 70 V, U

, which has been measured with 1/3 nomi-

IΔN

and extrapolated to IΔN, is > 50 V (> 25 V),

ΔN

exceeds 50 V (25 V) during the measuring

IΔN

> 70 V is displayed.

IΔN

Limit Values for Allowable, Continuous Contact Voltage

The limit for allowable, continuous contact voltage is UL=50V for alternating voltages (international agreement). Lower values have been established for special applications (e.g. medical applications: U

=25V).

If contact voltage is too high, or if the RCCB is not tripped, the system must be repaired (e.g. earthing resistance is too high, defective RCCB etc.)!

3-Phase Connections

For proper RCD testing at three-phase connections, the tripping test must be conducted for one of the three phase conductors (L1, L2 and L3).

Inductive Power Consumers

Voltage peaks may occur within the measuring circuit if inductive consumers are shut down during an RCCB trip test. If this is the case, the test instrument may display the following message: No measured value (– – – ). If this message appears, switch all power consumers off before performing the trip test. In extreme cases, one of the fuses in the test instrument may blow, and/or the test instrument may be damaged.

GMC-I Messtechnik GmbH 19

7.2 Special Testing for Systems and RCCBs

Note

Attention!

Nominal residual current:

Type 1: RCD, SRCD, PRCD etc.

Nominal current: 6 ... 125 A

Type 2: AC , A/F , B/B+ *

EV/MI

* Type B/B+/EV/MI = AC/DC sensitive

10 ... 500 mA

sine

Negative/positive half-wave

Waveform:

Connection:

without/with probe

System type:

TN/TT, IT

Negative/positive direct current

Contact voltage:

Tripping limit values:

7.2.1 Testing Systems and RCCBs with Rising Residual Current

(AC) for Type AC, A/F, B/B+ and EV/MI RCDs

Measuring Method

The instrument generates a continuously rising residual current of (0.3 to 1.3) • I The instrument stores the contact voltage and tripping current values which were measured at the moment tripping of the RCCB occurred, and displays them.

One of contact voltage limit values, U can be selected for measurement with rising residual current.

within the system for the testing of RCDs.

ΔN

=25V or UL=50V/65V,

Select Measuring Function

Connection

Start Measurement

Set Parameters for I

Measuring Sequence

After the measuring sequence has been started, the test current generated by the instrument is continuously increased starting at

0.3 times nominal residual current, until the RCCB is tripped. This can be observed by viewing gradual filling of the triangle at IΔ.

If contact voltage reaches the selected limit value (U or 25 V) before the RCCB is tripped, safety shut-down occurs. The U

If the RCCB is not tripped before the rising current reaches nominal residual current I

LED lights up red.

L/RL

Safety Shut-down: At up to 70 V, a safety shut-down is tripped within 3 seconds in accordance with IEC 61010.

, the RCD/FI LED lights up red.

ΔN

If bias current is present within the system during measurement, it is superimposed onto the residual current which is generated by the instrument and influences measured values for contact voltage and tripping current. See also section 7.1.

=65V, 50V

Evaluation

According to DIN VDE 0100, Part 600, rising residual current must, however, be used for measurements in the evaluation of RCDs, and contact voltage at nominal residual current I be calculated from the measured values. The faster, more simple measuring method should thus be taken advantage of (see sectionl 7.1).

ΔN

must

7.2.2 Testing Systems and RCCBs with Rising Residual Current (AC) for Type B/B+ and EV/MI RCDs (nur MTECH+, MXTRA & SECULIFE IP)

In accordance with VDE 0413, part 6, it must be substantiated that, with smooth direct current, residual operating current is no more than twice the value of rated residual current IΔN. A continu-

20 GMC-I Messtechnik GmbH

ously rising direct current, beginning with 0.2 times rated residual current I ing current may not exceed twice the value of I of 5 seconds.

Testing with smoothed direct current must be possible in both test current directions.

, must be applied to this end. If current rise is linear, ris-

ΔN

within a period

ΔN

7.2.3 Testing RCCBS with 5 • IΔN

Note

ΔN

Negative direct current

Positive direct current

Waveform:

180°: Start with neg. half-wave

0°: Start with pos. half-wave

5 times tripping current

X times tripping current:

ΔN

Neg. half-wave

Pos. half-wave

Negative direct current

Positive direct current

Waveform:

X times tripping current:

50% IΔN*

* Non-tripping test

with 50% I

ΔN

The measurement of time to trip is performed here with 5 times nominal residual current.

Measurements performed with 5 times nominal fault current are required for testing type and G RCCBs in the manufacturing process. They are used for personal safety as well.

Measurement can be started with the positive half-wave at “0°” or with the negative half-wave at “180°”.

Both measurements must nevertheless be performed. The longer of the two tripping times is decisive regarding the condition of the tested RCCB. Both values must be less than 40 ms.

Select Measuring Function

Set the Parameter – Start with Positive or Negative Half-Wave

7.2.4 Testing of RCCBs which are Suited for Pulsating DC Residual Current

In this case, RCCBs can be tested with either positive or negative half-waves. The standard calls for tripping at 1.4 times nominal current.

Select Measuring Function

Set the Parameter – Positive or Negative Half-Wave

Set the Parameter – 5 Times Nominal Current

The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: 1 x, 2 x IΔN

Start Measurement

Set the Parameter – Test With and Without “Non-Tripping Test”

Non-Tripping Test

If, during the non-tripping test which lasts for 1 second, the RCD trips too early at 50% I before the actual tripping test starts, the pop-up window shown at the right appears.

The following restriction applies to the selection of tripping current multiples relative to nominal current: Double and five-fold nominal current is not possible in this case.

According to DIN EN 50178 (VDE 160), only type B RCCBs (AC-DC sensitive) can be used for equipment with > 4 kVA, which is capable of generating smooth DC residual current (e.g. frequency converters). Tests with pulsating DC fault current only are not suitable for these RCCBs. Testing must also be conducted with smooth DC residual current in this case.

ΔN

, i.e.

GMC-I Messtechnik GmbH 21

Measurement is performed with positive and negative half-waves for testing RCCBs during manufacturing. If a circuit is charged with pulsating direct current, the function of the RCCB can be executed with this test in order to assure that the RCCB is not saturated by the pulsating direct current so that it no longer trips.

7.3 Testing for Special RCDs

Note

ΔN

Type 1:

7.3.1 System, Type RCD-S Selective RCCBs

Selective RCDs are used in systems which include two series connected RCCBs which are not tripped simultaneously in the event of a fault. These selective RCDs demonstrate delayed response characteristics and are identified with the symbol.

Measuring Method

The same measuring method is used as for standard RCCBs (see sections 7.1 on page 18 and 7.2.1 on page 20).

If selective RCDs are used, earthing resistance may not exceed half of the value for standard RCCBs.

For this reason, the instrument displays twice the measured value for contact voltage.

Select Measuring Function

Set Parameter – Selective

Tripping Test

➭ Press the IΔN key. The RCCB is tripped. Blinking bars appear

at the display panel, after which time to trip t sistance R

The tripping test need only be performed at one measuring point for each RCCB.

are displayed.

Selective RCDs demonstrate delayed response characteristics. Tripping performance is briefly influenced (up to 30 s) due to pre-loading during measurement of contact voltage. In order to eliminate pre-charging caused by the measurement of contact voltage, a waiting period must be observed prior to the tripping test. After the measuring sequence has been started (tripping test), blinking bars are displayed for approximately 30 seconds. Tripping times of up to 1000 ms are allowable. The tripping test is executed immediately after once again pressing the I key.

and earthing re-

ΔN

Start Measurement

7.3.2 PRCDs with Non-Linear Type PRCD-K Elements

The PRCD-K is a portable RCD with electronic residual current evaluation laid out as an in-line device which switches all poles (L, N and PE). An undervoltage trigger and protective conductor monitoring are additionally integrated into the PRCD-K.

The PRCD-K is equipped with an undervoltage trigger, for which reason it has to be operated with line voltage, and measurements may only be performed in the on state (PRCD-K switches all poles).

Terminology (from DIN VDE 0661)

Portable protective devices are circuit breakers which can be connected between power consuming devices and permanently installed electrical outlets by means of standardized plug-andsocket devices. A reusable, portable protective device is a protective device which is designed such that it can be connected to movable cables.

Please be aware that a non-linear element is usually integrated into PRCDs, which leads to immediate exceeding of the greatest allowable contact voltage during U than 50 V).

PRCDs which do not include a non-linear element in the protective conductor must be tested in accordance with section 7.3.3 on page 23.

measurements (UIΔ greater

IΔ

Objective (from DIN VDE 0661)

Portable residual current devices (PRCDs) serve to protect persons and property. They allow for the attainment of increased levels of protection as provided by protective measures utilized in electrical systems for the prevention of electrical shock as defined in DIN VDE 0100, part 410. They are to be designed such that they can be installed by means of a plug attached directly to the protective device, or by means of a plug with a short cable.

22 GMC-I Messtechnik GmbH

Measuring Method

ΔN

Type 1:

ΔN

Type 1:

The following can be measured, depending upon the measuring method:

•Time to trip t (The PRCD-K must be tripped at 50% nominal current.)

• Tripping current IΔ: testing with rising residual current I

: tripping test with nominal residual current I

ΔN

Select Measuring Function

7.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or comparable)

RCCBs from the SCHUKOMAT SIDOS series, as well as others which are of identical electrical design, must be tested after selecting the corresponding parameter.

Monitoring of the PE conductor is performed for RCDs of this type. The PE conductor is monitored by the summation current transformer. If residual current flows from L to PE, tripping current is cut in half, i.e. the RCCB must be tripped at 50% nominal residual current I

Whether or not PRCDs and selective RCDs are of like design can be tested by measuring contact voltage U

of greater than 70 V is measured at the PRCD of an other-

IΔN

wise error-free system, the PRCD more than likely contains a nonlinear element.

ΔN

. If a contact voltage

IΔN

Connection

Set the Parameter – PRCD with Non-Linear Elements

PRCD-S

The PRCD-S (portable residual current device – safety) is a special, portable, protective device with protective conductor detection or protective conductor monitoring. The device serves to protect persons from electrical accidents in the low-voltage range (130 to 1000 V). The PRCD-S must be suitable for commercial use, and is installed like an extension cable between an electrical consumer – as a rule an electrical tool – and the electrical outlet.

Select Measuring Function

Set Parameter – SRCD / PRCD

Start Measurement

GMC-I Messtechnik GmbH 23

7.3.4 Type G or R RCCB

Note

ΔN

Type 1:

180°: Start with neg. half-wave

0°: Start with pos. half-wave

Waveform:

Negative direct current

Positive direct current

X times tripping current:

5 times tripping current

In addition to standard RCCBs and selective RCDs, the special characteristics of the type G RCCB can also be tested with the test instrument.

The type G RCCB is an Austrian specialty and complies with the ÖVE/ÖNORM E 8601 device standard. Erroneous tripping is minimized thanks to its greater current carrying capacity and shortterm delay.

Select Measuring Function

Set the Parameter – 5 Times Nominal Current

Set Parameter – Type G/R (VSK)

Contact voltage and time to trip can be measured in the G/RRCD switch position.

It must be observed that time to trip for type G RCCBs may be as long as 1000 ms when measurement is made at nominal residual current. Set the limit value correspondingly.

➭ Then select 5 x I

for the G/R setting) and repeat the tripping test beginning with the positive half-wave at 0° and the negative half-wave at 180°. The longer of the two tripping times is decisive regarding the condition of the tested RCCB.

in the menu (this is selected automatically

ΔN

The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: 1 x, 2 x IΔN

Start Measurement

In both cases, tripping time must be between 10 ms (minimum delay time for type G RCCBs!) and 40 ms.

Type G RCCBs with other nominal residual current values must be tested with the corresponding parameter setting under menu item I adjusted.

. In this case as well, the limit value must be appropriately

ΔN

Set the Parameter – Start with Positive or Negative Half-Wave

24 GMC-I Messtechnik GmbH

The RCD parameter setting for selective RCCBs is not suitable for type G RCCBs.

7.4 Testing Residual Current Circuit Breakers in TN-S Systems

UIΔNR

IΔN• 1Ω 30mA⋅ 30m V 0

· 03V,== ==

System

type:

Connection

RCCBs can only be used in TN-S systems. An RCCB would not work in a TN-C system because PE is directly connected to the neutral conductor in the outlet (it does not bypass the RCCB). This means that residual current would be returned via the RCCB and would not generate any differential current, which is required in order to trip the RCCB.

As a rule, the display for contact voltage is also 0.1 V, because the nominal residual current of 30 mA together with minimal loop resistance results in a very small voltage value:

7.5 Testing of RCD Protection in IT Systems with High Cable Capacitance (e.g. in Norway)

The desired system type (TN/TT oder IT) can be selected for RCD test type U

A probe is absolutely essential for measurement in IT systems, because contact voltage U cannot otherwise be measured.

After selecting the IT system setting, connection with probe is selected automatically.

(IΔN, ta), and for earthing measurement (RE).

IΔN

which occurs in these systems

IΔN

Set the Parameter – Select System Type

Start Measurement

GMC-I Messtechnik GmbH 25

8 Testing of Breaking Requirements

Note

L-PE

Start

t1 t3

Measurement

Operation

RCD Disabled!

/mA

Suppression of RCCB tripping for RCCBs which are sensitive to pulsating current

Overcurrent Protective Devices, Measurement of Loop Impedance and Determination of Short-Circuit Current (functions Z

Testing of overcurrent protective devices includes visual inspection and measurement. Use the PROFITEST MASTER or SECULIFE IP to perform measurements.

Measuring Method

Loop impedance Z ascertained in order to determine if the breaking requirements for protective devices have been fulfilled.

Loop impedance is the resistance within the current loop (utility station – phase conductor – protective conductor) when a shortcircuit to an exposed conductive part occurs (conductive connection between phase conductor and protective conductor). Shortcircuit current magnitude is determined by the loop impedance value. Short-circuit current I value set forth by DIN VDE 0100, so that reliable breaking of the protective device (fuse, automatic circuit breaker) is assured.

Thus the measured loop impedance value must be less than the maximum allowable value.

Tables containing allowable display values for loop impedance and minimum short-circuit current display values for ampere ratings for various fuses and circuit breakers can be found in the help texts and in section 21 beginning of page 88. Maximum device error in accordance with VDE 0413 has been taken into consideration in these tables. See also section 8.2.

In order to measure loop impedance Z test current of 3.7 to 7 A (60 to 550 V) depending on line voltage and line frequency. At 16 Hz, the test has a duration of no more than 1200 ms.

If dangerous contact voltage occurs during measurement (> 50 V), safety shut-down occurs.

The test instrument calculates short-circuit current IK based on measured loop impedance current calculation is made with reference to nominal line voltage for line voltages which lie within the nominal ranges for 120 V, 230 V and 400 V systems. If line voltage does not lie within these nominal ranges, the instrument calculates short-circuit current IK based on prevailing line voltage and measured loop impedance Z

L-PE

Select Measuring Function

Connection: Schuko / 3-Pole Adapter

and IK)

L-P E

is measured and short-circuit current IK is

L-P E

may not fall below a predetermined

, the instrument uses a

L-P E

and line voltage. Short-circuit

L-P E

Connection: 2-Pole Adapter

Loop impedance should be measured for each electrical circuit at the farthest point, in order to ascertain maximum loop impedance for the system.

Observe national regulations, e.g. the necessity of conducting measurements without regard for RCCBs in Austria.

3-Phase Connections

Measurement of loop impedance to earth must be performed at all three phase conductors (L1, L2, and L3) for the testing of overcurrent protective devices at three phase outlets.

8.1 Measurements with Suppression of RCD Tripping

Measuring Method with Suppression of RCD Tripping

The test instruments PROFITEST MTECH+, PROFITEST MXTRA and SECULIFE IP make it possible to measure loop impedance in TN

systems with type A, F 300, 500 mA nominal residual current).

The test instrument generates a direct current to this end, which saturates the RCCB’s magnetic circuit. The test instrument then superimposes a measuring current which only demonstrates halfwaves of like polarity. The RCCB is no longer capable of detecting this measuring current, and is consequently not tripped during measurement.

A four conductor measuring cable is used between the instrument and the test plug. Cable and measuring adapter resistance is automatically compensated for during measurement and does not effect measurement results.

and type AC RCCBs (10, 30, 100,

A loop impedance measurement by using the method of suppression of RCD tripping can only be performed with

26 GMC-I Messtechnik GmbH

type A and F RCDs.

8.1.1 Measurement with Positive Half-Waves

L-PE

Tripping characteristics:

Diameter*: 1.5 to 70 sq. mm

Cable types*: NY...- H07...

Number of wires*: 2 to 10-strand

Nominal current:

2 ... 160 A, 9999 A

A, B/L, C/G, D, E, H, K, GL/GG & Factor

Sine

15 mA sinusoidal

Waveform:

DC-L offset and positive half-wave

Contact voltage:

DC-H offset and positive half-wave

2-pole

Measurement with country-specific

plug insert (e.g. Schuko)

Note

Selecting test probe and Lx-PE reference or AUTO is only relevant for report generation.

Semiautomatic measurement

8.2 Evaluation of Measured Values

The maximum allowable loop impedance Z which may be displayed after allowance has been made for maximum operating measurement error (under normal measuring conditions) can be determined with the help of Table 1 on page 88. Intermediate values can be interpolated.

The maximum allowable nominal current for the protective device (fuse or circuit breaker) for a line voltage of 230 V after allowance has been made for maximum measuring error can be determined with the help of Table 6 on page 89 based upon measured short-circuit current (corresponds to DIN VDE 0100 Part 600).

L-P E

Special Case: Suppressing Display of the Limit Value

The limit value cannot be ascertained. The inspector is prompted to evaluate the measured values himself, and to acknowledge or reject them with the help of the softkeys.

Measurement passed: key

✔

Measurement failed: X key

The measured value can only be saved after it has been evalu-

Limit value:

< limit value

UL ⏐ R

L-N

Nominal current:

Diameter: 1.5 to 70 sq. mm

Cable types: NY..., H03... - H07...

Number of wires: 2 ... 10-strand

2 ... 160 A, 9999 A

Tripping characteristics:

A, B/L, C/G, D, E, H, K, GL/GG & Factor

ated.

9 Measuring Line Impedance (Z

function)

L-N

Measuring Method (internal line resistance measurement)

Supply impedance Z method used for loop impedance Z

26). However, the current loop is completed via neutral conductor N rather than protective conductor PE as is the case with loop impedance measurement.

is measured by means of the same

L-N

(see section 8 on page

L-P E

Select Measuring Function

Connection: Schuko

8.3 Settings for Short-circuit current Calculation – Parameter I

Short-circuit current IK is used to test shutdown by means of an overcurrent protective device. In order for an overcurrent protective device to be tripped on time, short-circuit current IK must be greater than tripping current Ia (see table 6 in section 21.1). The variants which can be selected with the “Limits” key have the following meanings:

: Ia The measured value displayed for IK is used without

: Ia+Δ% The measured value displayed for Z

any correction to calculate Z

by an amount equal to the test instrument’s measuring

L-PE

L-P E

is corrected

uncertainty in order to calculate IK.

: 2/3 Z In order to calculate IK, the measured value displayed

: 3/4 Z Z

for Z all possible deviations (these are defined in detail by VDE 0100, part 600, as Z

is corrected by an amount corresponding to

L-P E

≤ 2/3 x U0/Ia).

≤ 3/4 x U0/Ia

s(m)

Short-circuit current calculated by the instrument (at nominal voltage)

Z Fault loop impedance Ia Tripping current

(see data sheets for circuit breakers / fuses)

Δ%Test instrument intrinsic error

Connection: 2-Pole Adapter

Set Parameters

Special Case Ik > I

28 GMC-I Messtechnik GmbH

see page 29.

kmax

Press the softkey shown at the left in order to switch back and forth between the country-specific plug insert, e.g. SCHUKO, and 2-pole adapter. The selected connection type is displayed inversely (white on black).

Start Measurement

Semiautomatic measurement

See also section 5.8 regarding the AUTO parameter. L-PE relationships are not possible here. The neutral L-N relationship is not offered during automatic sequencing to the right of the auto entry!

Polarity selection

Limit value:

< limit value

UL ⏐ R

Settings for Short-circuit current Calculation – Parameter I

: Ia The measured value displayed for IK is used without

: Ia+Δ% The measured value displayed for Z

any correction to calculate Z

by an amount equal to the test instrument’s measuring

L-PE

L-P E

is corrected

uncertainty in order to calculate IK.

: 2/3 Z In order to calculate IK, the measured value displayed

: 3/4 Z Z

for Z all possible deviations (these are defined in detail by VDE 0100, part 600, as Z

is corrected by an amount corresponding to

L-P E

≤ 2/3 x U0/Ia).

≤ 3/4 x U0/Ia

s(m)

Display of U

(UN / fN)

L-N

If the measured voltage value lies within a range of ±10% of the respective nominal line voltage of 120 V, 230 V or 400 V, the respectively corresponding nominal line voltage is displayed. In the case of measured values outside of the ±10% tolerance, the actual measured value is displayed.

Displaying the Fuse Table

After measurement has been performed, allowable fuse types can be displayed by pressing the HELP key.

The table shows maximum allowable nominal current dependent upon fuse type and breaking requirements.

Short-circuit current calculated by the instrument (at nominal

voltage)

Z Fault loop impedance Ia Tripping current (see data sheet for circuit breakers / fuses)

Δ%Test instrument inherent error

Special case Ik > I

If the value for the shortcircuit current is beyond the measured values defined in PROFITEST MASTER, it is indicated by > IK-max“.

In this case, it will be necessary to evaluate the measuring result manually.

GMC-I Messtechnik GmbH 29

kmax

Key: Ia = breaking current, I I

= nominal current, tA = tripping time

= short-circuit current,

10 Earthing Resistance Measurement (RE function)

Note

Attention!

Note

Start

Measurement

RCD Disabled!

/mA

Suppression of RCCB tripping for RCCBs which are sensitive to pulsating current

Operation

Earthing resistance RE is important for automatic shutdown in system segments. It must have a low value in order to assure that high short-circuit current flows and the system is shut down reliably by the RCCB in the event of a fault.

Test S e t up

Earthing resistance (RE) is the sum of the earth electrode’s dissipation resistance and earth conductor resistance. Earthing resistance is measured by applying an alternating current via the earth conductor, the earth electrode and earth electrode resistance. This current, as well as voltage between the earth electrode and a probe, are measured.

The probe is connected to the probe connector socket (17) with a 4 mm contact protected plug.

Direct Measurement with Probe (mains powered measurement)

Direct measurement of earthing resistance RE is only possible within a measuring circuit which includes a probe. However, this means that the probe and reference earth must be of like potential, i.e. that they are positioned outside of the potential gradient area. The distance between the earth electrode and the probe should be at least 20 m.

Measurement without Probe (mains powered measurement)

In many cases, especially in extremely built-up areas, it is difficult, or even impossible, to set a measuring probe. In such cases, earthing resistance can be measured without a probe. In this case, however, the resistance values for the operational earth electrode R measurement results.

Measuring Method (w. probe) (mains powered measurement)

The instrument measures earthing resistance RE by means of the ammeter-voltmeter test. Resistance RE is calculated from the quotient of voltage UE and current I The test current which is applied to earthing resistance is controlled by the instrument (see section 19, “Characteristic Values”, beginning on page 82 for pertinent values).

A voltage drop is generated which is proportional to earthing resistance.

and phase conductor L are also included in the

where UE is between the earth electrode and the probe.

Measurement with or without earth electrode voltage depending upon entered parameters and the selected type of connection:

RANGE Connection Measuring Functions

xx Ω / xx kΩ

10 Ω / U

xx Ω / xx kΩ *

* This parameter results in automatic selection of probe connection.

No probe measurement No U

measurement

Probe measurement activated U

is measured

Probe measurement activated

measurement

No U

Clamp measurement activated

measurement

No U

Measuring Method with Suppression of RCD Tripping (mains powered earthing measurement)

The test instruments PROFITEST MTECH+, PROFITEST MXTRA and SECULIFE IP make it possible to measure loop impedance in TN

systems with type A, F and type AC RCCBs (10, 30, 100, 300, 500 mA nominal residual current).

The test instrument generates a direct current to this end, which saturates the RCCB’s magnetic circuit. The test instrument then superimposes a measuring current which only demonstrates half-waves of like polarity. The RCCB is no longer capable of detecting this measuring current, and is consequently not tripped during measurement.

Measurement cable and measuring adapter resistance are compensated for automatically during measurement and have no effect on measurement results.

If dangerous contact voltages occur during measurement (> 50 V), the measurement is interrupted and safety shutdown occurs.

Probe resistance does not effect measurement results and may be as high as 50 kΩ.

The probe is part of the measuring circuit and may carry a current of up to 3.5 mA in accordance with VDE 0413.

Limit Values

Earthing resistance (earth coupling resistance) is determined primarily by the electrode’s contact surface and the conductivity of the surrounding earth.

The specified limit value depends on the type of electrical system and its shutdown conditions in consideration of maximum contact voltage.

Evaluation of Measured Values

The maximum allowable displayed resistance values which assure that the required earthing resistance is not exceeded, and for which maximum device operating error has already been taken into consideration (at nominal conditions of use), can be determined with the help of Table 2 on page 88. Intermediate values can be interpolated.

30 GMC-I Messtechnik GmbH

10.1 Earthing Resistance Measurement – Mains Operated

Note

RER

The following types of measurement or connection are possible:

• 2-pole measurement via 2-pole adapter

• 2-pole measurement via earthing contact plug (not possible in IT systems)

• 3-pole measurement via 2-pole adapter and probe

• Selective measurement: 2-pole measurement with probe and current clamp sensor

At left in figure: 2-pole measuring

adapter for contacting PE and L measuring points

At right in figure: The PRO-Schuko

measuring adapter can be used as an alternative.

Select Measuring Function

10.2 Earthing Resistance Measurement – Battery Powered (only MPRO & MXTRA)

The 5 following types of measurement or connection are possible:

• 3-Pole measurement via PRO-RE adapter

• 4-Pole measurement via PRO-RE adapter

• Selective measurement with clamp meter

(4-pole) via PRO-RE adapter

• 2-clamp measurement via PRO-RE/2 adapter

• Measurement of soil resistivity

via PRO-RE adapter

Figure at right: PRO-RE adapter for connect-

ing earth electrode, auxiliary earth electrode, probe and auxiliary probe to the test instrument for 3/4-pole measurement, selective measurement and measurement of soil resistivity

Select Operating Mode

The selected operating mode is displayed inversely:

mains~ in white against a black background.

Battery powered measurement is not possible: The error message shown at the left appears if the selected connection type is inappropriate for the operating mode.

Special Case: Manual Measuring Range Selection (test current selection)

(R ≠ AUTO, R = 10 kΩ (4 mA), 1 kΩ (40 mA), 100 Ω (0.4 A), 10 Ω (3.7 ... 7 A), 10 Ω/U

When the measuring range is selected manually, accuracy values are only valid starting at 5% of the upper limit range value (except for the 10Ω

)

range; separate display for small values).

Set Parameters

❑ Measuring range: AUTO, 10 kΩ (4 mA), 1 kΩ (40 mA), 100 Ω

(0.4 A), 10 Ω (> 3.7 A) In systems with RCCBs, resistance or test current must be selected such that it is less than tripping current (½ I

❑ Contact voltage: UL < 25 V, < 50 V, < 65 V, see section 5.7 re-

garding freely selectable voltage.

❑ Transformer ratio: depends on utilized current clamp sensor ❑ Connection type: 2-pole adapter, 2-pole adapter + probe,

2-pole adapter + clamp meter

❑ Type of system: TN or TT ❑ Test current waveform

See section 10.4 through section 10.6 regarding advisable parameters for the respective measurement and connection types.

ΔN

Perform Measurements

See section 10.4 through section 10.6.

Figure at right: PRO-RE/2 measuring adapter as

accessory for connecting the EClip 2 generator clamp for 2-clamp measurement and earth loop resistance measurement.

Select Measuring Function

Select Operating Mode

The selected operating mode is displayed inversely: white battery icon against black background.

Mains powered measurement is not possible: The error message shown at the left appears if the selected connection type is inappropriate for the operating mode.

Set Parameters

❑ Measuring range: AUTO, 50 kΩ, 20 kΩ, 2 kΩ, 200 Ω, 20 Ω ❑ Current clamp sensor transformer ratio:

1:1 (1 V/A,) 1:10 (100 mV/A), 1:100 (10 mV/A), 1:1000 (1 mV/A)

❑ Connection type: 3-pole, 4-pole, selective, 2-clamp, ρ

❑ Distance d (for measuring

See section 10.7 through section 10.11 regarding advisable parameters for the respective measurement and connection types.

): xx m

(Rho)

Perform Measurements

See section 10.7 through section 10.11.

GMC-I Messtechnik GmbH 31

10.3

Limit value:

RE > Limit Value

UL ⏐ R

Earthing Resistance, Mains Powered – 2-Pole Measurement with 2-Pole Adapter or Country-Specific Plug (Schuko) without Probe

Key

Operational earth

Earthing resistance

Internal resistance

Earthing resistance through equipotential bonding

systems

Probe resistance

PAS Equipotential bonding busbar RE Overall earthing resistance (R

//RE2//water pipe)

In the event that it is impossible to set a probe, earthing resistance can be estimated by means of an “earth loop resistance measurement” without probe.

The measurement is performed exactly as described in section 10.4, “Earthing Resistance Measurement, Mains Powered – 3-Pole Measurement: 2-Pole Adapter with Probe”, beginning on page 33. However, no probe is connected to the probe connector socket (17).

The resistance value R also includes operational earth electrode resistance R tance at phase conductor L. These values must be deducted from

obtained with this measuring method

ELoop

and resis-

the measured value in order to determine earthing resistance. If conductors of equal cross section are assumed (phase conductor L

and neutral conductor N), phase conductor resistance is half as great as supply impedance Z Supply impedance can be measured as described in section 9

(phase conductor + neutral conductor).

L-N

beginning of page 28. In accordance with DIN VDE 0100, operational earth electrode R

1) Measurement: ZLN amounts to Ri = 2 · R

2) Measurement: Z

3) Calculation:

must lie within a range of “0Ω to 2Ω”.

amounts to R

L-P E

RE1 amounts to Z

L-P E

ELoop

– 1/2 · Z

L-N

; where RB = 0

The value for operational earth conductor resistance RB should be ignored in the calculation of earthing resistance, because it is generally unknown.

The calculated earthing resistance thus includes operational earth conductor resistance as a safety factor.

In parameter setting steps 1 to 3 are performed automatically by the test instrument.

Select Measuring Function

Set Parameters

❑ Measuring range: AUTO, 10 kΩ (4 mA), 1 kΩ (40 mA), 100 Ω

(0.4 A), 10 Ω (3.7 ... 7 A). In systems with RCCBs, resistance or test current must be selected such that it is less than tripping current (½ I

ΔN

❑ Connection type: 2-pole adapter ❑ Contact voltage: UL < 25 V, < 50 V, < 65 V ❑ Test current waveshape: Sinusoidal (full-wave), 15 mA sinusoidal

(full-wave), DC offset and positive half-wave

❑ System type: TN/TT, IT ❑ Transformer ratio: irrelevant in this case

Start Measurement

Select Operating Mode

32 GMC-I Messtechnik GmbH

10.4 Earthing Resistance Measurement, Mains Powered – 3-Pole Measurement: 2-Pole Adapter with Probe

Note

Probe

--------------=





Limit value:

RE > Limit Value

UL ⏐ R

Key

Operational earth electrode

Earthing resistance

Earthing resistance through equipotential bonding sys-

tems

Probe resistance

PAS Equipotential bonding busbar RE Overall earthing resistance (R

Measurement of R

//RE2//water pipe)

Select Measuring Function

Select Operating Mode

Set Parameters

❑ Measuring range: AUTO,

10 kΩ (4 mA), 1 kΩ (40 mA), 100 Ω (0.4 A), 10 Ω (3.7 ... 7 A) In systems with RCCBs, resistance or test current must be selected such that it is less than tripping current (½ I

❑ Connection type: 2-pole adapter + probe ❑ Contact voltage: UL < 25 V, < 50 V, < 65 V, see section 5.7 re-

garding freely selectable voltage.

❑ Test current waveshape:

Sinusoidal (full-wave), 15 mA sinusoidal (full-wave), DC offset and positive half-wave

❑ System type: TN/TT, IT ❑ Transformer ratio: irrelevant in this case

ΔN

Connection

2-pole adapter and probe are connected

GMC-I Messtechnik GmbH 33

Start Measurement

The following diagram appears if the 2-pole adapter is connected incorrectly.

10.5 Earthing Resistance Measurement, Mains Powered – Measurement of Earth Electrode Voltage (UE function)

Note

UNR

⋅

Loop

-------------------=

Limit value:

RE > Limit Value

UL ⏐ R

This measurement is only possible with a probe (see section

10.4). Earth electrode potential U the earth electrode between the earth electrode terminal and ref-

is the voltage which occurs at

erence earth if a short-circuit occurs between the phase conductor and the earth electrode. Measurement of earth electrode potential is required by Swiss standard NIV/NIN SEV 1000.

Measuring Method

In order to determine earth electrode potential, the instrument first measures earth electrode loop resistance R ately thereafter earthing resistance R values and then calculates earth electrode potential with the fol-

. The instrument stores both

, and immedi-

ELoop

lowing equation:

The calculated value is displayed at the display panel.

Select Measuring Function

Select Operating Mode Select measuring range

Set Parameters

❑ Measuring range: 10 Ω / U ❑ Connection type: 2-pole adapter + probe ❑ Contact voltage: UL < 25 V, < 50 V, < 65 V, see section 5.7 re-

garding freely selectable voltage.

❑ Test current waveshape: sinusoidal only in this case (full-wave)! ❑ System type: TN/TT, IT ❑ Transformer ratio: irrelevant in this case

Start Measurement

Connection

The following diagram appears if the 2-pole adapter is connected incorrectly.

2-pole adapter and probe are connected.

34 GMC-I Messtechnik GmbH

10.6 Earthing Resistance Measurement, Mains Powered – Selective Earthing Resistance Measurement with Current Clamp Sensor

Probe

Clamp

--------------





as Accessory

As an alternative to the conventional measuring method, measurement can also be performed with a current clamp sensor.

Key

Operational earth

Earthing resistance

Cable resistance

Earthing resistance through equipotential bonding

systems

Probe resistance

PAS Equipotential bonding busbar RE Overall earthing resistance (R

// RE2 // water pipe)

Measurement without clamp: RE = RE1 // R

Measurement with clamp: RE = RE2 =

Select Measuring Function

Select Operating Mode

Set Parameters at Tester

❑ Measuring range (test current selection):

1 kΩ (40 mA), 100 Ω (0.4 A), 10 Ω (3.7 ... 7 A) In the case of systems with RCCBs, the DC + functions can be selected (only in the 10 Ω range and only with the METRAFLEX P300).

❑ Connection type: 2-pole adapter + clamp

After parameter selection: automatic setting to 10 Ω measuring range and 1 V/A or 1000 mV/A transformer ratio

❑ Contact voltage: UL < 25 V, < 50 V, < 65 V, see section 5.7 re-

garding freely selectable voltage.

❑ Test current waveshape:

Sinusoidal (full-wave), DC offset and positive half-wave

❑ System type: TN/TT, IT ❑ Current clamp sensor transformation ratio: see table below

Set Parameters at Current Clamp Sensor

❑ Current clamp sensor measuring range: see table below

Selecting a Measuring Range at the Current Clamp Sensor

Tester METRAFLEX P300 Clamp Tester

Tra ns form a-

tion Ratio

Parameter

1:1

1 V / A

1:10

100 mV / A

1:100

10 mV / A

Switch Measuring

Range

3 A (1 V/A) 3 A

30 A (100 mV/A) 30 A 5 ... 999 mA

300 A (10 mV/A) 300 A 0.05 ... 10 A

Measuring

Range

0.5 ... 100 mA

Connection

Important Instructions for Use of the Current Clamp Sensor

• Use only the METRAFLEX P300 or the Z3512A current clamp sensor for this measurement.

• Read and adhere to the operating instructions for the METRAFLEX P300 current clamp sensor, as well as the safety precautions included therein.

•Observe direction of current flow (see arrow on the current

•Use the clamp in the permanently connected state. The sensor

• The current clamp sensor may only be used at an adequate

• Before use, always inspect the electronics housing, the con-

2-pole adapter, clamp and probe are connected.

GMC-I Messtechnik GmbH 35

clamp sensor).

may not be moved during measurement.

distance from powerful extraneous fields.

nector cable and the current sensor for damage.

• In order to prevent electric shock, keep the surface of the

Note

METRAFLEX clean and free of contamination.

• Before use, make sure that the flexible current sensor, the connector cable and the electronics housing are dry.

Start Measurement

In the event that you have changed the transformation ratio at the test instrument, a pop-up window appears indicating that this new setting also has to be entered to the connected current clamp sensor.

i: Note regarding currently selected transformation ratio at the tester

RE RE

: Selective earthing resistance measured via clamp

Clamp

: Total earthing resistance measured via probe, compara-

Probe

tive value

The following diagram appears if the 2-pole adapter is connected incorrectly.

36 GMC-I Messtechnik GmbH

10.7 Earthing Resistance Measurement, Battery Operated – 3-Pole (only MPRO & MXTRA)

Note

PROFITEST MPRO, PROFITEST MXTRA

≥ 20 m ≥20 m

SHESE

3-Wire Method

The measurement cables must be well insulated in order to prevent shunting. In order to keep the influence of possible coupling to a minimum, the measurement cables should not cross each other or run parallel to each other over any considerable distance.

Select Measuring Function

Select Operating Mode

The selected operating mode is displayed inversely: white battery icon against black background.

Set Parameters

❑ Measuring range: AUTO, 50 kΩ, 20 kΩ, 2 kΩ, 200 Ω, 20 Ω ❑ Connection type: 3-pole ❑ Transformer ratio: irrelevant in this case ❑ Distance d (for measuring

): irrelevant in this case

Measurement of Earthing Resistance with 3-Wire Method

Connection

➭ Position the spikes for the probe and the auxiliary electrode at

least 20, respectively 40 meters from the electrode (see figure above).

➭ Make sure that no excessively high contact resistances occur

between the probe and the ground.

➭ Attach the PRO-RE adapter (Z501S) to the test plug. ➭ Connect the probe, the auxiliary electrode and the electrode

via the 4 mm banana plug sockets at the PRO-RE adapter. In doing so, observe labeling on the banana plug sockets. Terminal ES/P1 is not connected.

Start Measurement

The resistance of the measurement cable to the earth electrode is incorporated directly into the measurement results.

In order to keep error caused by measurement cable resistance as small as possible, a short connector cable with large crosssection should be used between the earth electrode and terminal “E” for this measuring method.

GMC-I Messtechnik GmbH 37

10.8 Earthing Resistance Measurement, Battery Operated – 4-Pole (only MPRO & MXTRA)

Note

PROFITEST MPRO, PROFITEST MXTRA

SHESE

≥ 20 m ≥20 m

4-Wire Method

Select Measuring Function

Select Operating Mode

The 4-wire method is used in the case of high cable resistance between the earth electrode and the instrument terminal.

The resistance of the cable between the earth electrode and the “E” terminal at the instrument is measured in this case.

Figure 10.8.1:Measurement of Earthing Resistance with 4-Wire Method

Connection

The selected operating mode is displayed inversely: white battery icon against black background.

Set Parameters

❑ Measuring range: AUTO, 50 kΩ, 20 kΩ, 2 kΩ, 200 Ω, 20 Ω ❑ Connection type: 4-pole ❑ Transformer ratio: irrelevant in this case ❑ Distance d (for measuring

): irrelevant in this case

Start Measurement

Potential Gradient Area

Information regarding suitable positioning of the probe and the auxiliary earth electrode can be obtained by observing voltage characteristics or dissipation resistance in the ground.

The measuring current from the earth tester which flows via the

➭ Position the spikes for the probe and the auxiliary electrode at

least 20, respectively 40 meters from the electrode (see figure above).

➭ Make sure that no excessively high contact resistances occur

between the probe and the ground.

➭ Attach the PRO-RE adapter (Z501S) to the test plug. ➭ Connect the probes, the auxiliary electrode and the electrode

via the 4 mm banana plug sockets at the PRO-RE adapter. In doing so, observe labeling on the banana plug sockets.

In the case of the 4-wire method, the earth electrode is connected to the “E” and “ES” terminals with two separate measurement cables, the probe is connected to the “S” terminal and the auxiliary earth electrode is connected to the “H” terminal.

38 GMC-I Messtechnik GmbH

earth electrode and the auxiliary earth electrode causes a given potential distribution in the form of a potential gradient area (see also Figure 10.8.3: on page 39). Resistance distribution is analogous to potential distribution.

Dissipation resistance of the earth electrode and the auxiliary earth electrode differs as a rule. The potential gradient area and the resistance gradient area are thus not symmetrical.

Dissipation Resistance of Small Scope Earth Electrodes

The arrangement of the probe and the auxiliary earth electrode is very important for correct determination of the dissipation resistance of earth electrodes. The probe must be positioned between the earth electrode and the auxiliary earth electrode within the so-called neutral zone (reference earth) (see also Figure 10.8.2: on page 39). The voltage or resistance curve is thus nearly horizontal within the neutral zone.

Proceed as follows in order to select suitable probe and auxiliary earth electrode resistances:

➭ Drive the auxiliary earth electrode into the ground at a dis-

tance of roughly 40 meters from the earth electrode.

➭ Position the probe halfway between the earth electrode and

d = distance, electrode to aux. electrode E = earth electrode H = auxiliary earth electrode I = measuring current K = neutral zone (reference earth) UE= earth potential RE= UE / I = earthing resistance

Φ = potential

E = electrode location H = aux. electrode loc. S = probe location

Curve I (KI) Curve II (KII)

mWmW

5 10 15 20 25 30 40 60 80

100

0.9

1.28

1.62

1.82

1.99

2.12

2.36

2.84

3.68 200

10 20 40 60

80 100 120 140 160 200

0.8

0.98

1.60

1.82

2.00

2.05

2.13

2.44

2.80 100

S1, S2 = inflection points KI = curve I KII = curve II

K I

K II

10 20 30 40 50 60 70 80 90 100 m KI 20 40 60 80 100 120 140 160 180 200 m KII

A/H

A/E

0 0

S HESE

the auxiliary earth electrode and determine earthing resistance.

➭ Reposition the probe 2 to 3 meters closer to the earth elec-

trode, and then 2 to 3 meters closer to the auxiliary earth electrode and measure earthing resistance in each position.

If all 3 measurements result in the same measured value, this is the correct earthing resistance. The probe is in the neutral zone.

However, if the three measured values for earthing resistance differ from each other, either the probe is not located in the neutral zone, or the voltage or resistance curve is not horizontal at the point at which the probe has been inserted.

Figure 10.8.2: Voltage Curve in Homogenous Earth between Earth

Electrode E and Auxiliary Earth Electrode H

Correct measurements can be obtained in such cases by either increasing distance between the earth electrode and the auxiliary earth electrode, or by moving the probe to the perpendicular bisector between the earth electrode and the auxiliary earth electrode (see also Figure 10.8.3:). When the probe is moved to the perpendicular bisector, its location is removed from the sphere of influence of the two potential gradient areas caused by the earth electrode and the auxiliary earth electrode.

➭ Auxiliary earth electrode H is positioned as far from possible

from the earthing system.

➭ The area between the earth electrode and the auxiliary earth

electrode is sampled in equal steps of 5 meters each.

➭ Measured resistance values are displayed as a table, and then

plotted graphically as depicted in Figure 10.8.4: (curve I).

If a line parallel to the abscissa is drawn through inflection point S1, this line divides the resistance curve into two parts. Measured at the ordinate, the bottom part results in sought dissipation resistance of the earth electrode R equals dissipation resistance of the auxiliary earth electrode R With a measurement setup of this type, dissipation resistance of

, and the top value

A/E

A/H

the auxiliary earth electrode should be less than 100 times the dissipation resistance of the earth electrode.

In the case of resistance curves without a well defined horizontal area, measurement should be double checked after repositioning the auxiliary earth electrode. This additional resistance curve must be entered to the first diagram with a modified abscissa scale such that the two auxiliary earth electrode locations are superimposed. The initially ascertained dissipation resistance value can be checked with inflection point S2 (see Figure 10.8.4:).

Notes Regarding Measurement in Difficult Terrain

In extremely unfavorable terrain (e.g. sandy soil after a lengthy period without rain), auxiliary earth electrode and probe resistance can be reduced to permissible values by watering the ground around the auxiliary earth electrode and the probe with soda water or salt water. If this does not suffice, several earth spikes can be parallel connected to the auxiliary earth electrode.

In mountainous terrain or in the case of very rocky subsoil where earth spikes cannot be driven into the ground, wire grates with a mesh size of 1 cm and a surface area of about 2 square meters can be used. These grates are laid flat onto the ground, are wetted with soda water or salt water and may also be weighted down with sacks full of moist earth.

Figure 10.8.3: Probe Distance S Outside of the Overlapping Potential

Gradient Areas on the Perpendicular Bisector of Earth Electrode E and Auxiliary Earth Electrode H

Dissipation Resistance of Large Scope Earthing Systems

Significantly large distances to the probe and the auxiliary earth electrode are required for measuring large scope earthing systems. Calculations are based on 2½ or 5 times the value of the earthing system’s largest diagonal. Large scope earthing systems of this sort often demonstrate dissipation resistances of only a few ohms, which makes it especially important to position the measuring probe within the neutral zone. The probe and the auxiliary earth electrode should be positioned at a right angle to the direction of the earthing system’s largest linear expansion. Dissipation resistance must be kept small. If necessary, several earth spikes must be used at a distance of 1 to 2 m from each other and connected to this end.

However, in actual practice large measuring distances are frequently not possible to due difficult terrain. If this is the case, proceed as shown in Figure 10.8.4:.

GMC-I Messtechnik GmbH 39

Figure 10.8.4: Earthing Resistance Measurement for a Large Scope

Earthing System

10.9 Earthing Resistance Measurement, Battery Operated – Selective (4-pole)

Note

PROFITEST MPRO, PROFITEST MXTRA

with Current Clamp Sensor and PRO-RE Measuring Adapter as Accessory (only MPRO & MXTRA)

General

Set Parameters at Tester

❑ Measuring range: 200 Ω

After switching to selective measurement, the AUTO measuring range is activated automatically if a measuring range of greater than 200 Ω had been selected.

❑ Connection type: selective ❑ Current clamp sensor transformer ratio:

1:1 (1 V/A,) 1:10 (100 mV/A), 1:100 (10 mV/A)

❑ Distance d (for measuring ρ

Set Parameters at Current Clamp Sensor

❑ Current clamp sensor measuring range: see table below

Selecting a Measuring Range at the Current Clamp Sensor

When measuring earthing resistance in systems with several parallel connected earth electrodes, total resistance of the earthing system is measured.

Two earth spikes (auxiliary earth electrode and probe) are set for this measurement. Measuring current is fed between the earth electrode and the auxiliary earth electrode and voltage drop is measured between the earth electrode and the probe.

The current clamp is positioned around the earth electrode to be measured, and thus only that portion of the measuring current which flows through the earth electrode is measured.

Tester Z3512A Clamp

Tra ns form a-

tion Ratio

Parameter

1:1

1 V / A

1:10

100 mV / A

1:100

10 mV / A

100 A / x 100 100 A

Important Instructions for Use of the Current Clamp Sensor

Connection

➭ Position the spikes for the probe and the auxiliary electrode at

least 20, respectively 40 meters from the electrode (see figure above).

➭ Make sure that no excessively high contact resistances occur

between the probe and the ground.

➭ Attach the PRO-RE adapter (Z501S) to the test plug. ➭ Connect the probes, the auxiliary electrode and the electrode

via the 4 mm banana plug sockets at the PRO-RE adapter. In doing so, observe labeling on the banana plug sockets.

➭ Connect the Z3512A current clamp sensor to jacks 15 and 16 at

the test instrument.

➭ Attach the current clamp sensor to the earth electrode.

• Use only the Z3512A current clamp sensor for this measurement.

•Use the clamp in the permanently connected state. The sensor may not be moved during measurement.

• The current clamp sensor may only be used at an adequate distance from powerful extraneous fields.

• Make sure that the current clamp sensor’s connector cable is laid separate from the probe cables to the greatest possible extent.

Start Measurement

): irrelevant in this case

Switch Measuring

1 A / x 1 1 A

10 A / x 10 10 A

Range

Select Measuring Function

Select Operating Mode

The selected operating mode is displayed inversely: white battery icon against black background.

40 GMC-I Messtechnik GmbH

10.10 Earthing Resistance Measurement, Battery Powered – Ground Loop Measurement

Note

PROFITEST MPRO, PROFITEST MXTRA

(with current clamp sensor and transformer, plus PRO-RE/2 measuring adapter as accessory) (only MPRO & MXTRA)

2-Clamp Measuring Method

Select Measuring Function

Select Operating Mode

The selected operating mode is displayed inversely: white battery icon against black background.

Set Parameters at Tester

❑ Measuring range: in this case always AUTO

After selecting to 2-clamp measurement, switching to the

In the case of earthing systems which consist of several earth electrodes (R1 ... Rx) which are connected to each other, earthing resistance of a single electrode (Rx) can be ascertained with the help of 2 current clamps without disconnecting Rx or using spikes.

❑ Connection type: 2-clamp ❑ Current clamp sensor transformer ratio:

❑ Distance d (for measuring

Set Parameters at Current Clamp Sensor

❑ Current clamp sensor measuring range: see table below

AUTO range takes place automatically. It is then no longer possible to change the range!

1:1 (1 V/A), 1:10 (100 mV/A), 1:100 (10 mV/A)

): irrelevant in this case

This measuring method is especially well suited for buildings or systems for which probes and auxiliary earth electrodes cannot be used, or where it’s impermissible to disconnect earth electrodes.

Furthermore, this “spike-free” measurement is performed as one of three measurements for lightning protection systems, in order to determine whether or not current can be dissipated.

Figure at right: PRO-RE/2 measuring adapter as accessory for connecting the E-

Selecting a Measuring Range at the Current Clamp Sensor

Tester Z3512A Clamp

Tra ns form a-

tion Ratio

Parameter

1:1

1 V / A

1:10

100 mV / A

1:100

10 mV / A

Switch Measuring

Range

1 A / x 1 1 A

10 A / x 10 10 A

100 A / x 100 100 A

Clip 2 generator current clamp

Important Instructions for Use of the Current Clamp Sensor

• Use only the Z3512A current clamp sensor for this measurement.

•Use the clamp in the permanently connected state. The sensor may not be moved during measurement.

• The current clamp sensor may only be used at an adequate distance from powerful extraneous fields.

Connection

• Make sure that the connector cables from the two clamps are laid separate from each other to the greatest possible extent.

Start Measurement

➭ No probes or auxiliary earth electrodes are required. ➭ The earth electrode is not disconnected.

➭

Attach the

PRO-RE/2 adapter (Z502T)

to the test plug.

➭ Connect the E-Clip 2 generator clamp (current clamp transformer)

via the 4 mm safety plugs at the PRO-RE/2 adapter.

➭ Connect the Z3512A current clamp sensor to jacks 15 and 16 at

the test instrument.

➭ Attach the 2 clamps to an earth electrode (earth spike) at dif-

ferent heights with a clearance of at least 30 cm.

GMC-I Messtechnik GmbH 41

10.11 Earthing Resistance Measurement, Battery Powered

Note

ES ESH

dd d

– Measurement of Soil Resistivity ρ (only MPRO & MXTRA)

General

Select Measuring Function

Select Operating Mode

The selected operating mode is displayed inversely: white battery icon against black background.

Measurement of Soil Resistivity

The determination of soil resistivity is necessary for the planning of earthing systems. Reliable values need to be ascertained which take even the worst possible conditions into account (see “Geologic Evaluation” on page 43).

Soil resistivity is decisive with regard to the magnitude of an earth electrode’s dissipation resistance. Soil resistivity can be measured with the PROFITEST MASTER using the method according to Wenner.

Four earth spikes of greatest possible length are driven into the ground in a straight line at distance d from one another, and are connected to the earth tester (see figure above). The earth spikes usually have a length of 30 to 50 cm. Longer earth spikes can be used for soil which demonstrates poor conductivity (sandy soil etc.). The depth to which the earth spikes are driven into the ground may not exceed one twentieth of distance d.

Erroneous measurement may result in the event that piping, cables or other underground metal conduits run parallel to the measuring setup.

Soil resistivity is calculated as follows:

ρE=2π ⋅ d ⋅ R Where: π = 3.1416 d = distance in m between two earth spikes R = ascertained resistance value in Ω (this value corresponds to R

determined with the 4-wire method)

Set Parameters

❑ Measuring range: AUTO, 50 kΩ, 20 kΩ, 2 kΩ, 200 Ω, 20 Ω ❑ Connection type:

(Rho)

❑ Transformer ratio: irrelevant in this case ❑ Distance d for measurement of

: adjustable from 0.1 to 999 m

Start Measurement

Connection

➭ Position the spikes for the probe and the auxiliary electrode at

equal distances (see figure above).

➭ Make sure that no excessively high contact resistances occur

between the probe and the ground.

➭ Attach the PRO-RE adapter (Z501S) to the test plug. ➭ Connect the probes, the auxiliary electrode and the electrode

via the 4 mm banana plug sockets at the PRO-RE adapter. In doing so, observe labeling on the banana plug sockets.

42 GMC-I Messtechnik GmbH

Geologic Evaluation

+ρE (%)

-10

-20

-30

Jan. MarchMay July Sept. Nov.

2 ρ

⋅

----------=

----=

2 ρ

⋅

----------=

D 1,13 F

⋅=

2 ρ

⋅

----------=

D 1,13 F

⋅=

2 ρ

⋅

4,5 a⋅

----------=

π D

⋅

--------=

D 1,57 J

⋅=

Except in extreme cases, the ground is measured down to a depth which is roughly equal to probe distance d. This makes it possible to arrive at conclusions regarding the ground’s stratification by varying probe distance. Layers which are highly conductive (water table), into which earth electrodes should be installed, can thus be discovered within a region which is otherwise poorly conducting.

Soil resistivity is subject to considerable fluctuation which may be due to various causes such as porosity, moisture penetration, concentration of dissolved salts in the ground water and climatic fluctuation.

Characteristic values for ρ and the soil’s negative temperature coefficient) can be approximated quite closely by means of a sinusoidal curve.

relative to season (soil temperature

Calculating Dissipation Resistance

Formulas for calculating dissipation resistance for common types of earth electrodes are included in this table. These rules of thumb are entirely adequate for actual practice.

Number Earth Electrode Rule of Thumb Subsidiary Variable

Earth strip (star type earth

3 Ring earth electrode

4 Mesh earth electrode

5 Ground plate —

electrode)

Earth rod (buried earth

electrode)

Hemispherical earth elec-

trode

—

Soil Resistivity ρE Relative to Season Without the Effects of Precipitation (earth electrode depth < 1.5 m)

A number of typical soil resistivity values for various types of ground are summarized in the following table.

Type of Soil Soil Resistivity ρ

Marshy ground 8 … 60 Arable soil, loamy and clayey

soil, moist gravel

20 … 300 Moist sandy soil 200 … 600 Dry sandy soil, dry gravel 200 … 2000 Rocky ground 300 … 8000 Rock 10

Soil Resistivity ρ

with Different Types of Soil

… 10

[Ωm]

Formulas for Calculating Dissipation Resistance R

for Various Earth

Electrodes

RA= dissipation resistance (Ω) ρ

= soil resistivity (Ωm)

I = length of the earth electrode (m) D = diameter of a ring earth electrode, diameter of the equivalent surface

area of a mesh earth electrode or diameter of a hemispherical earth electrode (m)

F = surface area (sq. meters) of the enclosed surface or a ring or mesh

earth electrode

a = Edge length (m) of a square ground plate; a is replaced with the fol-

lowing for rectangular plates: √ sides of the rectangle.

J = volume (cubic meters) of an individual foundation footing

bxc, where b and c are the two

GMC-I Messtechnik GmbH 43

11 Measuring Insulation Resistance

Attention!

Note

ISO RINS

Voltage type: constant

Test volta g e : 50 V / 100 V / 250 V / 325 V / 500 V / 1000 V

Voltage type: rising/ramp

Earth leakage resistance:

xxx V*

2-pole meas. (relevant for report generating only):

Measurements between

Lx-PE / N-PE / L+N-PE / Lx-N / Lx-Ly / AUTO*

where x, y = 1, 2, 3

Limit value:

I > I

Limit

INS

STOP

low limit:

INS

input range:

> 40 V ... < 999 V

upper limit:

Limit value:

INS

< Limit Value

UL ⏐ R

INS

Insulation resistance can only be measured at voltagefree objects.

11.1 General

Select Measuring Function

Connection

2 pole adapter or test plug

Breakdown current for Ramp Function

Limit values for Breakdown Voltage

Limit Values for Constant Test Voltage

The test instrument measures the insulation between the contacts L and PE. In systems without RCD, N and PE must be seperated.

Checking Measurement Cables Before Measurements

Before performing insulation measurement, the test probes on the measurement cables should be short-circuited in order to assure that the instrument displays a value of less than 1 kΩ. In this way, incorrect connection can be avoided and broken measurement cables can be detected.

Set Parameters

❑ Test voltage

A test voltage which deviates from nominal voltage, and is usually lower, can be selected for measurements at sensitive components, as well as systems with voltage limiting devices.

❑ Voltage Type

The “U detect weak points in the insulation, as well as to determine

” rising test voltage function (ramp function) is used to

INS

response voltage for voltage limiting components. After briefly pressing the ON/START key, test voltage is continuously increased until specified nominal voltage U which is measured at the test probes during and after testing. This

is reached. U is the voltage

voltage drops to a value of less than 10 V after measurement (see section entitled “Discharging the Device Under Test”).

Insulation measurement with rising test voltage is ended:

• As soon as specified maximum test voltage U the measured value is stable

is reached and

• As soon as specified maximum test voltage is reached, e.g. after sparkover occurs at breakdown voltage).

Specified maximum test voltage U breakdown voltage is displayed for U

or any occurring triggering or

INS

* Freely adjustable voltage (see section 5.7)

Polarity Selection

* AUTO parameter (see section 5.8)

44 GMC-I Messtechnik GmbH

The constant test voltage function offers two options:

• After briefly pressing the ON/START key, specified test voltage UN is read out and insulation resistance RINS is measured. As soon as the measured value is stable (settling time may be several seconds in the case of high cable capacitance values), measurement is ended and the last measured values for RINS and UINS are displayed. U is the voltage which is measured at the test probes during and after testing. This voltage drops to a value of less than 10 V after measurement (see section entitled “Discharging the Device Under Test”).

Note

Attention!

• As long as you press and hold the ON/START key, test voltage UN is applied and insulation resistance R not release the key until the measured value has settled in (settling time may be several seconds in the case of high cable capacitance values). Voltage U, which is measured during testing, corresponds to voltage UINS. After releasing the ON/ START key, measurement is ended and the last measured values for R less than 10 V after measurement (see section entitled “Discharging the Device Under Test”).

❑ Pole Selection Report Entry

The poles between which testing takes place can only be entered here for reporting purposes. The entry itself has no influence on the actual polarity of the test probes or pole selection.

❑ Limits – Setting the Limit Value

The limit value for insulation resistance can be set as desired. If measurement values occur which are below this limit value, the red U

0.5 to 10 MΩ is available. The limit value is displayed above the

measured value.

LED lights up. A selection of limit values ranging from

L/RL

and UINS are displayed. U drops to a value of

INS

is measured. Do

INS

Start Measurement – Rising Test Voltage (ramp function)

Press briefly:

Testing of overvoltage limiters or varistors and determining their tripping voltage:

– Select maximum voltage such that the anticipated breakdown

voltage of the device under test is roughly one third of this value (observe manufacturer’s data sheet if applicable).

– Select current limit value in accordance with actual require-

ments or the manufacturer’s data sheet (characteristic curve of the device under test).

Determining tripping voltage for spark gaps:

– Select maximum voltage such that the anticipated breakdown

voltage of the device under test is roughly one third of this value (observe manufacturer’s data sheet if applicable).

– Select the current limit value in accordance with actual

requirements within a range of 5 to 10 A (response characteristics are too unstable with larger current limit values, which may result in faulty measurement results).

Detecting weak points in the insulation:

– Select maximum voltage such that it does not exceed the test

object’s permissible insulation voltage; it can be assumed that an insulation fault will occur even with a significantly lower voltage if an accordingly lower maximum voltage value is selected (nevertheless at least greater than anticipated breakdown voltage) – the ramp is less steep as a result (increased measuring accuracy).

– Select the limit current value in accordance with actual

requirements within a range of 5 to 10 A (see also settings for spark gaps).

Quick polarity reversal if parameter is set to AUTO: 01/10 ... 10/10: L1-PE ... L1-L3

If “semiautomatic polarity reversal” is selected (see section 5.8), the corresponding icon is displayed instead of the ramp.

General Notes Regarding Insulation Measurements with Ramp Function

Insulation measurement with ramp function serves the following purposes:

• Detect weak points in the test object’s insulation

• Determine tripping voltage of voltage limiting components and test them for correct functioning These components may include, for example, varistors, overvoltage limiters (e.g. DEHNguard® from Dehn+Söhne) and spark gaps.

The test instrument uses continuously rising test voltage for this measuring function, up to the maximum selected voltage limit. The measuring procedure is started by pressing the START/ STOPP key and runs automatically until one of the following events occurs:

• The selected voltage limit is reached

• The selected current limit is reached

• Sparkover occurs (spark gaps)

Differentiation is made amongst the following three procedures for insulation measurement with ramp function:

Start Measurement – Constant Test Voltage

Long-term measurements Press and hold:

Quick polarity reversal if parameter is set to AUTO: 01/10 ... 10/10: L1-PE ... L1-L3

The instrument’s batteries are rapidly depleted during the insulation resistance measurement. When using the “constant test voltage” function, only press and hold the Start

▼ key until the display has become stable (if long-

term measurement is required).

Special Condition for Insulation Resistance Measurement

Insulation resistance can only be measured at voltagefree objects.

If measured insulation resistance is less than the selected limit value, the U

If an interference voltage of insulation resistance is not measured. The MAINS/NETZ LED lights up and the “interference voltage” pop-up message appears.

All conductors (L1, L2, L3 and N) must be tested against PE!

LED lights up.

L/RL

≥ 25 V is present within the system,

GMC-I Messtechnik GmbH 45

Attention!

Do not touch the instrument’s terminal contacts during

Attention!

ISO RINS

Limit value:

RE(ISO) > limit value

UL ⏐ R

EISO

Voltage type: constant

Test v o l t a ge : 50 V / 100 V / 250 V / 325 V / 500 V / 1000 V*

Voltage type: rising/ramp

Earth leakage

resistance:

insulation resistance measurements!

If nothing has been connected to the terminal contacts, or if a resistive load component has been connected for measurement, your body would be exposed to a current of approx. 1 mA at a voltage of 1000 V. The noticeable shock may lead to injury (e.g. resulting from a startled reaction etc.).

Discharging the Device Under Test

If measurement is performed at a capacitive object such as a long cable, it becomes charged with up to approx. 1000 V!

Touching such objects is life endangering!

When an insulation resistance measurement has been performed on a capacitive object it is automatically discharged by the instrument after measurement has been completed. Contact to the device under test must be maintained to this end. The falling voltage value can be observed at the U display.

Do not disconnect the DUT until less than 10 V is displayed for U!

Evaluation of Measured Values

Instrument measuring error must be taken into consideration in order to assure that the limit values set forth in DIN VDE regulations are not fallen short of. The required minimum display values for insulation resistance can be determined with the help of Table 3 on page 88. These values take maximum device error into consideration (under nominal conditions of use). Intermediate values can be interpolated.

* Freely adjustable voltage (see section 5.7)

Connection and Test SetUp

11.2 Special Case: Earth Leakage Resistance (R

This measurement is performed in order to determine electrostatic discharge capacity for floor coverings in accordance with EN 1081.

EISO

)

Select Measuring Function

Set Parameters

➭ Rub the floor covering at the point at which measurement is to

be performed with a dry cloth.

➭ Place the 1081 floor probe onto the point of measurement

and load it with a weight of at least 300 N (30 kg).

➭ Establish a conductive connection between the measuring

electrode and the Test Probe and connect the measuring adapter (2-pole) to an earth contact, e.g. the earthing contact at a mains outlet or a central heating radiator (prerequisite: reliable ground connection).

Start Measurement

The limit value for earth leakage resistance from the relevant regulations applies.

46 GMC-I Messtechnik GmbH

12 Measuring Low-Value Resistance

Attention!

Note

ROFFSET: ON ↔ OFF

Polarity: +/- to PE

with ramp function

Limit value:

RLO > Limit Value

UL ⏐ R

up to 200 Ohm (protective conductor and equipotential bonding conductor)

According to the regulations, the measurement of low-value resistance at protective conductors, earth conductors or bonding conductors must be performed with (automatic) polarity reversal of the test voltage, or with current flow in one (+ pole to PE) and then the other direction (– pole to PE).

Low-value resistance must only be measured at voltagefree objects.

Select Measuring Function

Connection

Via 2-pole adapter only!

❑ ROFFSET ON/OFF

– Compensation for Extension Cables with up to 10 Ω

If measurement cables or extension cables are used, their resistance can be deducted automatically from the measurement results. Proceed as follows:

➭ Switch R

the footer.

➭ Select a polarity option or automatic polarity reversal. ➭ Short-circuit the end of the measurement extension cable with

the second test probe at the instrument.

➭ Start measurement of offset resistance with I

An intermittent acoustic signal sounds first, which is then accompanied by a blinking warning to prevent an offset value which has already been saved from being unintentionally deleted.

➭

Start the offset measurement by pressing the release key again or abort measurement by pressing the (here = ESC).

OFFSET from OFF to ON. “ROFFSET = 0.00 Ω” appears in

ΔN

key

ON/START

If the offset measurement is stopped by an error pop-up (Roffset > 10 Ω or difference between RLO+ and RLO– greater than 10%), the offset value that has last been measured is retained. Inadvertent deletion of an offset value once established is thus almost ruled out! The respectively smaller value is otherwise stored to memory as an offset value. The maximum offset value is 10.0 Ω. Negative resistances may result due to the offset value.

Set Parameters

Measuring ROFFSET

The ROFFSET x.xx Ω message now appears in the footer at the display, where x.xx may take a value between 0.00 and 10.0 Ω. This value is subtracted from the actual measuring results for all subsequent R set to ON.

Roffset must be determined anew in the following cases:

• After switching to a different polarity option

• After switching from ON to OFF and back again You can deliberately delete the offset value by switching ROFF-

SET from OFF to ON.

measurements, if the ROFFSET ON/OFF key has been

Only use this function when performing measurements with extension cables. When different extension cables are used, the above described procedure must always be repeated.

GMC-I Messtechnik GmbH 47

❑ Type / Polarit y

The direction in which current flows can be selected here.

❑ Limits – Setting the Limit Value

The limit value for resistance can be set as desired. If measurement values which exceed this limit occur, the red U lights up. Limit values can be selected between 0.10 Ω and

10.0 Ω (editable). The limit value is displayed above the measured value.

L/RL

LED

12.1 Measurements with Constant Test Current

Attention!

Note

Start Measurement

Press and hold for long-term measurement

The test probes should always be in contact with the DUT before pressing the Start If the object is energized, measurement is disabled as soon as it is contacted with the test probes. If the Start tacted with the test probes afterwards, the fuse blows. Which of the two fuses has blown is indicated in the pop-up window with the error message by means of an arrow.

In the case of single-pole measurement, the respective value is saved to the database as RLO.

▼ key is pressed first and the test object is con-

▼ key.

Measuring Low-Value Resistance Measurement cable and 2-pole measuring adapter resistance is compensated for automatically thanks to the four conductor method and thus do not effect measurement results. However, if an extension cable is used its resistance must be measured and deducted from the measurement results.

Resistances which do not demonstrate a stable value until after a “settling in period” should not be measured with automatic polarity reversal, but rather one after the other with positive and negative polarity. Examples of resistances whose values may change during measurement include: – Incandescent lamp resistance, whose values change

due to warming caused by test current – Resistances with a great conductive component – Contact resistance

Evaluation of Measured Values

See Table 4 on page 88.

Calculation of Cable Lengths for Common Copper Conductors

If the HELP key is activated after performing resistance measurement, the cable lengths corresponding to common conductor cross sections are displayed.

Polarity Selection Display Condition

+ pole to PE RLO+ None – pole to PE RLO– None

RLO If ΔRLO ≤ 10%

± pole to PE

RLO+ RLO–

If ΔRLO > 10%

Automatic Polarity Reversal

After the measuring sequence has been started, the instrument performs measurement with automatic polarity reversal, first with current flow in one direction, and then in the other. In the case of long-term measurement (press and hold START key), polarity is switched once per second.

If the difference between RLO+ and RLO– is greater than 10% with automatic polarity reversal, RLO+ and RLO– values are displayed instead of RLO. The respectively larger value, RLO+ or RLO–, appears at the top and is saved to the database as the RLO value.

Evaluating Measurement Results

Differing results for measurements in both directions indicate voltage at the DUT (e.g. thermovoltages or unit voltages).

Measurement results can be distorted by parallel connected impedances at load current circuits and by equalizing current, especially in systems which make use of “overcurrent protection devices” (previous neutralization) without an isolated protective conductor. Resistances which change during measurement (e.g. inductance), or a defective contact, can also cause distorted measurements (double display).

In order to assure unambiguous measurement results, causes of error must be located and eliminated.

In order to find the cause of the measuring error, measure resistance in both current flow directions.

If results vary for the two different current flow directions, cable length is not displayed. In this case, capacitive or inductive components are apparently present which would distort the calculation.

This table only applies to cables made with commercially available copper conductors and cannot be used for other materials (e.g. aluminum)!

The instrument’s batteries are exposed to excessive stress during insulation resistance measurement. For measurement with current flow in one direction, only press and hold the START long as is necessary for the measurement.

48 GMC-I Messtechnik GmbH

▼ key as

12.2 Protective Conductor Resistance Measurement with Ramp Curve

Note

Measuring phase Demagnetization

and waiting period

Result

Time [s]

Rise

phase

Test C u rre n t [A]

01 3 6

0.25

prior to polarity reversalorrestart

– Measurements on PRCDs with Current-monitored Protective Conductor Using PROFITEST PRCD Test Adapter as Accessory

Application

In certain PRCD types, the protective conductor current is monitored. Direct application or disconnection of the test current of 200 mA, which is required for protective conductor resistance measurements, results in tripping of the PRCD and, consequently, a cut-off of the protective conductor connection. Protective conductor measurement is no longer possible in this case.

A special ramp curve for the application or disconnection of the test current in combination with the PROFITEST PRCD test adapter allows for performing protective conductor resistance measurements without PRCDs being tripped.

Timed Sequence of the Ramp Function

Due to the physical properties of the PRCD, the measuring cycles of this ramp function lie within the range of several seconds.

Moreover, while the polarity of the test current is being reversed, an additional waiting period during polarity reversal becomes nec- essary. This waiting period has been included in the test sequence in operating mode „automatic polarity reversal“ .

If you change the polarity direction manually, e.g. from „+pole with ramp“

to „–pole with ramp“

, the test instrument recognizes the change in the current flow direction, disables measurements for the required waiting period and simultaneously shows the respective symbol, see figure on the right.

Connection

➭ Please consult the operating instructions of the PROFITEST

PRCD adapter, particularly chapter 4.1. There you will also find

information on the connection terminals for offset measurements and protective conductor resistance measurements.

Selecting Polarity Parameter

➭ Select the requested polarity parameter with

ramp.

Measuring ROFFSET

➭ Perform an offset measurement as described on page 47, to

assure that the test adapter‘s connector contacts are not included in the measurement results.

The offset only remains saved to memory until you change the polarity parameter. If you perform the measurement with manual polarity reversal (+pole or –pole), you have to repeat the offset measurement before each measurement with another polarity.

Measuring Protective Conductor Resistance

➭ Check whether the PRCD is activated. If this is not the case,

activate it.

➭ Perform the protective conductor measurement as described

above in section 12.1. Start the test sequence by briefly pressing key ON/START. By pressing and holding key ON/START you can extend the preset duration of the measuring phase.

Start measurement

Visualization of the measuring and waiting phases during protective conductor resistance measurements on PRCDs with the PROFITEST MXTRA

Tripping of a PRCD due to faulty contact

During measurement, safe contact between the test probes of the 2-pole adapter and the DUT or the sockets of the PROFITEST PRCD test adapter is to be ensured. Interruptions may lead to heavy fluctuations in the test current which may cause the PRCD to trip in the worst case.

In this event, the tripping of the PRCD is automatically recognized by the test instrument as well and an error message is generated, see figure on the right. In this case as well, the test instrument automatically takes into account the required waiting period before reenabling the PRCD and allowing any new measurements.

GMC-I Messtechnik GmbH 49

During the magnetization phase (rising curve) and the subsequent measuring phase (constant current) the symbol on the right is shown.

If you abort the measurement during the rise phase, no measuring result can be issued and displayed.

After the measurement, the demagnetization phase (declining curve) and a subsequent waiting period is signalled with the inverse symbol shown on the right. During this period, no new measurements are possible.

Only when the symbol on the right is shown, can the measurement result be read and measurements started with the same or another polarity.

13 Measurement with Accessory Sensors

Attention!

SENSOR

Output range,

clamp

Limit value:

I < and I > limit value

UL ⏐ R

“IΔ” with METRAFLEX⏐P300

13.1 Current Measurement with Current Clamp Sensor

Bias, leakage and circulating current to 1 A, as well as leakage current to 1000 A can be measured with the help of special current clamp sensors, which are connected to sockets 15 and 16.

Danger: High-Voltage!

Use only current clamp sensors which are specifically offered as accessories by GMC-I Messtechnik GmbH. Other current clamp sensors might not be terminated with an output load at the secondary side. Dangerously high voltage may endanger the user and the device in such cases.

Maximum input voltage at the test instrument!

Do not measure any currents which are greater than specified for the measuring range of the respective clamp. Input voltage for clamp connector sockets 15 and 16 at the test instrument may not exceed 1 V!

Set Parameters

The transformation ratio parameter must be correspondingly set at the test instrument depending upon the respectively selected measuring range at the current clamp sensor.

Be sure to read and adhere to the operating instructions for current clamp sensors and the safety precautions included therein, especially those regarding the approved

measuring category.

Select Measuring Function

Selecting a Measuring Range at the Current Clamp Sensor

Tester Clamp Tester

Transforma-

tion Ratio

Parameter

1:1

1 V / A

1:10

100 mV / A

1:100

10 mV / A

1:1000

1 mV / A

Tester Clamp Tester

Transforma-

tion Ratio

Parameter

1:1

1 V / A

1:10

100 mV / A

1:100

10 mV / A

Switch WZ12C

1 mV / mA

— x 100 [mV/A] — 0 ... 10 A 0.05 ... 10 A

— x 10 [mV/A] — 0 ... 100 A 0.5 ... 100 A

1 mV / A x 1 [mV/A] 1 A ... 150 A 0 ... 1000 A

Switch

METRAFLEX P300

3 A (1 V/A) 3 A 5 ... 999 mA

30 A (100 mV/A) 30 A 0.05 ... 10 A

300 A (10 mV/A) 300 A 0.5 ... 100 A

Switch

Z3512A

x 1000 [mV/

Measuring Range METRAFLEX P300

Measuring

Range

WZ12C

1 mA ... 15 A 0 ... 1 A 5 ... 999 mA

Measuring

Range

Z3512A

Measuring

Range

Specifying limit values results in automatic evaluation at the end of the measurement.

Connection

Measuring

Range

5 ... 150 A/

999 A

Start Measurement

50 GMC-I Messtechnik GmbH

14 Special Functions – EXTRA Switch Position

EXTRA

Select EXTRA Switch Position

Overview of Special Functions

Selecting Special Functions

The list of special functions is accessed by pressing the uppermost softkey. Select the desired function with the requested icon.

Softkey Meaning / Spe-

cial Function

Voltage drop measurement

ΔU function

Standing surface insulation impedance

function

Meter start-up test

kWh function

Leakage Current Measurement

function

Check insulation monitoring device

IMD function Residual volt-

age test

Ures function

Intelligent ramp ta + IΔ function

Residual current monitor (RCM)

RCM function Testing the op-

erating states of electric vehicles at charging stations per IEC 61851

Report generation of fault simulations on PRCDs with PROFITEST PRCD adapter

TECH+MPRO

MBASE+

✓✓

———✓

———✓ —

—

✓

———

MXTRA

✓✓

✓

—

✓

— ✓ —

—

✓

Section / Page

SECULIFE IP

section

14.1 page 52

section

14.2 page 53

section

14.3 page 54

section

14.4 page 55

section

14.5 page 56

section

14.6 page 58

section

14.7 page 59

section

14.8 page 60

section

14.9 page 61

section

14.10 page 62

GMC-I Messtechnik GmbH 51

14.1 Voltage Drop Measurement (at ZLN) – ΔU Function

Nominal current of the fuse:

Polarity selection: Lx-N

Diameter: 1.5 to 70 sq. mm

Cable types: NY..., H03... - H07...

Number of wires: 2 ... 10-strand

Tripping characteristics: B, L

2 to 160 A

Limit value

ΔU % > limit value

UL ⏐ R

ΔU

Red

Significance and Display of ΔU (per DIN VDE 100, part 600)

Voltage drop from the intersection of the distribution network and the consumer system to the point of connection of an electrical power consumer (electrical outlet or device connector terminals) should not exceed 4% of nominal line voltage.

Calculating voltage drop (without offset): ΔU = Z

Calculating voltage drop (with offset): ΔU = (Z

• nominal current of the fuse

L-N

- Z

) • nominal current of the fuse

OFFSET

Measurement without OFFSET

Proceed as follows: ➭ Switch OFFSET from ON to OFF.

ΔU in % = 100 • ΔU / U

See also section 9 regarding measurement procedure and connection.

L-N

Connection and Test Set-Up

Set Parameters

Determine OFFSET (as %)

Proceed as follows: ➭ Switch OFFSET from OFF to ON. “ΔUOFFSET = 0.00%” is dis-

played.

➭ Connect the test probe to the point of common coupling

(measuring device / meter).

➭ Start measurement of offset with IΔ

An intermittent acoustic signal sounds first, which is then accompanied by a blinking warning to prevent an offset value which has already been saved from being unintentionally deleted.

➭ Start the offset measurement by

pressing the release key again or abort measurement by pressing the

key

▼ ON/START (here = ESC).

Note: When the nominal current IN is changed with existing ΔU

the offset value is automatically adjusted.

OFFSET,

Setting Limit Values

ΔUOFFSET x.xx % is indicated, where x.xx may take a value between 0.00 and 99.9 %.

An error message appears in a pop-up window in the event that Z > 10 Ω.

Start Measurement with OFFSET

TAB Limit value per German technical connection conditions

for connection to low-voltage mains between the distribution network and the measuring device

DIN Limit value per DIN 18015-1: ΔU < 3% between the mea-

VDE Limit value per DIN VDE 0100-520: ΔU < 4% between the

NL Limit value per NIV: ΔU < 5%

52 GMC-I Messtechnik GmbH

suring device and the consuming device

distribution network and the consuming device (adjustable up to 10% in this case)

14.2 Measuring the Impedance of Insulating Floors and Walls

Attention!

NOT OK

(standing surface insulation impedance) – Z

Function

Measuring Method

The instrument measures the impedance between a weighted metal plate and earth. Line voltage available at the measuring site is used as an alternating voltage source. The ZST equivalent circuit is considered a parallel circuit.

Connection and Test Set-Up

Start Measurement

Evaluate Measured Value

The measured value has to be evaluated after measurement has been completed:

Note: Use the measuring set-up described in section 11.2 (trian- gular probe) or the one outlined below:

➭ Cover the floor or the wall at unfavorable locations, e.g. at

joints or abutments, with a damp cloth measuring approx. 270 x 270 mm.

➭ Place the 1081 Probe on top of the damp cloth and load the

probe with a weight of 750 N (75 kg, i.e. one person) for floors, or 250 N (25 kg) for walls, e.g. press against the wall with one hand which is insulated with a glove.

➭ Establish a conductive connection to the 1081 Probe, and

connect it to the probe connector socket at the instrument.

➭ Connect the instrument to a mains outlet with the test plug.

Do not touch the metal plate or the damp cloth with your bare hands. No more than 50% line voltage may be applied to these parts! Current with a value of up to 3.5 mA may flow! The measured value would be distorted as well.

Resistance values must be measured at several points in order to provide for adequate evaluation. Measured resistance may not be less than 50 kΩ at any given point. If the measured value is greater than 30 MΩ, Z play panel.

In the event that “NOT OK” is selected, an error is indicated by the UL/RL LED which lights up red.

See also Table 5 on page 89 with regard to evaluating measured values.

The measured value cannot be saved to memory and included in the test report until it has been evaluated.

> 30.0MΩ always appears at the dis-

Save Measured Value

GMC-I Messtechnik GmbH 53

14.3 Testing Meter Start-Up with Earthing Contact Plug

Note

NOT OK

– kWh Function (not SECULIFE IP)

Energy consumption meters can be tested for correct start-up with this function.

Connection L – N

Earthing contact plug

Start Measurement

Save Measured Value

Special Case

Start-up of energy consumption meters which are connected between L and L or L and N can be tested with this function.

Connection L – L

2-Pole Adapter

The meter is tested with the help of an internal load resistor and a test current of approximately 250 mA. After pressing the start key, test power is displayed and the meter can be tested for proper start-up within a period of 5 seconds. The “RUN” pictograph is displayed.

TN systems: All 3 phase conductors must be tested against N, one after the other. In other types of systems, all phase conductors (active conductors) must be tested against one another.

If minimum power is not reached, the test is either not started or aborted.

Evaluate Measured Value

The measured value has to be evaluated after measurement has been completed:

If an earthing contact outlet is not available, you can use the 2-pole adapter. N must be contacted with the PE test probe (L2), and then measurement must be started. If PE is contacted with the PE test probe (L2) during the meter start-up test, approximately 250 mA flow through the protective conductor and any upstream RCD is tripped.

In the event that “NOT OK” is selected, an error is indicated by the UL/RL LED which lights up red.

The measured value cannot be saved to memory and included in the test report until it has been evaluated.

54 GMC-I Messtechnik GmbH

14.4 Leakage Current Measurement

Attention!

Note

with PRO-AB Leakage Current Adapter as Accessory – I

Function (PROFITEST MXTRA & SECULIFE IP only)

Applications

Measurement of contact voltage in accordance with DIN VDE 0107, part 10, as well as continuous leakage and patient auxiliary current per IEC 62353 (VDE 0750, part 1) / IEC 601-1 / EN 60 601-1:2006 (Medical electrical equipment – General requirements for basic safety), is possible using the PRO-AB PRO-AB leakage current measuring adapter as an accessory with the PROFITEST MXTRA test instrument.

As specified in the standards listed above, current values of up to 10 mA may be measured with this measuring adapter. In order to be able to fully cover this measuring range using the measurement input provided on the test instrument (2-pole current clamp input), the measuring instrument is equipped with range switching between transformation ratios of 10:1 and 1:1. In the 10:1 range, voltage dividing takes place at the same ratio.

Connection and Test Set-Up

In order to perform the leakage current measurement, the adapter’s measurement outputs must be plugged into the measurement inputs at the left-hand side of the PROFITEST MXTRA (2pole current clamp input and probe input).

Either of the leakage current measuring adapter’s inputs is connected to reference earth (e.g. safe earth electrode / equipotential bonding) via a measurement cable. The metallic housing (accessible part) of the device under test is contacted with a test probe or alligator clip which is connected to the other input by means of a second measurement cable.

Measuring Sequence

Refer to the operating instructions for the PRO-AB leakage current measuring adapter regarding performance of the measurement.

The test plug should be located in the storage slot during leakage current measurement. Under no circumstances may the test plug be connected with any system components, including PE / ground potential (measured values might otherwise be distorted).

The measurement can be started or stopped by pressing the “START” key. Leakage current measurement is a long-term measurement, i.e. it continues until it is stopped by the user. The momentary measured value is display continuously during measurement.

Testing the PRO-AB Adapter

The adapter should be tested before use and at regular intervals (see adapter operating instructions).

The self-test must be deactivated in the menu (set “TEST ON/OFF” function key to “OFF”) in order to perform a measurement.

Always start with the large measuring range (10:1), unless there’s no doubt that small measured values can be expected, in which case the small measuring range can be used (1:1). The measuring range must be selected at the measuring adapter, as well as in the menu using the corresponding function key (RANGE). It must be assured that the range settings at the adapter and at the test instrument are always identical, in order to prevent any distortion of measurement results.

Depending on the magnitude of the measured values, the range setting can, or must (in the case of overranging), be manually corrected at the measuring adapter and the test instrument.

Individual limit values can be adjusted after pressing the “Limits” function key. Exceeded limit values are indicated by the red limit value LED at the test instrument.

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14.5 Testing of Insulation Monitoring Devices – IMD Function

Limit value:

I < and I > limit values

UL ⏐ R

(PROFITEST MXTRA & SECULIFE IP only)

Applications

Insulation monitoring devices (IMDs) or earth fault detection sys-

tems (EDSs) are used in IT systems in order to monitor adherence to a minimum insulation resistance value, as specified by DIN VDE 0100-410.

They’re used in power supplies for which a single-pole earth fault may not result in failure of the power supply, for example in operating rooms or photovoltaic systems.

Insulation monitors can be tested with the help of this special function. After pressing the ON/START button, an adjustable insula- tion resistance is activated between one of the two phases of the IT system to be monitored and ground to this end. This resistance can be changed in the “MAN±” manual sequence mode with the help of the “+” or “–” softkey, or varied automatically from R

in the “AUTO” operating mode. Testing is ended by once

min

again pressing the ON/START key. Time during which the momentary resistance value prevails since

changing the value at the system is displayed. The IMD’s display and response characteristics can be subsequently evaluated and documented with the help of the “OK” or “NOT OK” softkey.

max

Connection L – N

Set Limit Values for R

Limit values are calculated and displayed as a percentage of the momentarily displayed R

L-P E

as %

L-P E

value.

Manual Measuring Sequence

Set Parameters – MAN/AUTO (1)

Switch between manual measuring sequence and automatic measuring sequence

AUTO

MAN

– Change conductor

relationship and limit values (2)

Quick switching between L1-PE and L2-PE (also during measurement) with the I

key

– Changing the initial resistance (3)

You can select the initial resistance here to start each series of measurements for manual measuring sequences.

The GOME setting (default settings) sets the initial value to a resistance value of

50.0 kΩ.

The measurement and the stopwatch (see arrow) are started with the “START” key.

The stopwatch is restarted each time the resistance value is changed and whenever the energized phase conductor is switched (L1/L2).

During measurement, the conductor relationship (L1-PE or L2PE) can be changed with the I be adjusted with the + and – keys, without interrupting the measurement. The stopwatch is reset in both cases.

Increasing + or Decreasing – the Resistance Value (The setting values themselves are fixed!)

The bar graph display provides you with quick orientation. The numeric combination which appears below it indicate the momentary step from as many as 65 steps (in this case step 17 of

65).

key or the resistance value can

ΔN

Automatic Measuring Sequence

In the case of the automatic measuring sequence, the sequence runs through all resistance values from the maximum to the minimum value (Rmax (2,51 MΩ) to Rmin (20 kΩ)) in 65 steps, and dwell time for each step is 2 seconds.

56 GMC-I Messtechnik GmbH

Evaluation

NOT OK

In order to evaluate the measurement, it must be stopped. This applies to manual as well as automatic measurement. Press the “START” or “ESC” key to this end. The stopwatch is stopped and the evaluation window appears.

Press the “NOT OK”, “START” or “ESC” key in order to reject the measurement.

Retrieving Saved Measured Values

The measured value cannot be saved to memory and included in the test report until it has been evaluated (see also section 16.4).

With the help of the key shown at the right (MW: measured value / PA: parameter), the setting parameters can be displayed for this measurement.

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14.6 Residual Voltage Test – Ures Function (PROFITEST MXTRA only)

Note

Limit value:

ΔU % > limit value

UL ⏐ R

ΔU

Applications

The EN 60204 standard specifies that after switching supply power off, residual voltage must drop to a value of 60 V or less within 5 seconds at all accessible, active components of a machine to which a voltage of greater that 60 V is applied during operation.

With the PROFITEST MXTRA, testing for the absence of voltage is performed as follows by means of a voltage measurement which involves measuring discharge time tu: In the case of voltage dips of greater than 5% of momentary line voltage (within 0.7 seconds), the stopwatch is started and momentary undervoltage is displayed as Ures after 5 seconds, and indicated by the red UL/RL LED.

The function is ended after 30 seconds, after which Ures and tu data can be deleted and the function can thus be restarted by pressing the ESC key.

Connection

Measuring Sequence – Long-Term Measurement

Testing is selected as a continuous measurement because residual voltage testing is triggered automatically and voltage measurement is always active for safety reasons.

If, for example, conductors are exposed when a machine is switched off – e.g. if plug connectors are disengaged – which are not protected against direct contact, maximum allowable discharge time is 1 second!

Limit Values

Setting Limit Values

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14.7

Nominal residual current:

Type 1 : RCD, SRCD, PRCD etc.

Nominal current: 6 ... 125 A

Type 2 : AC , A/F , B *

* Type B = AC/DC sensitive

10 ... 500 mA

Contact voltage:

< 25 V, < 50 V, < 65 V

Intelligent Ramp – ta+IΔ Function (PROFITEST MXTRA only)

14.7.1 Applications

The advantage of this measuring function in contrast to individual measurement of I breaking time and breaking current by means of a test current which is increased in steps, during which the RCD is tripped only once.

The intelligent ramp is subdivided into time segments of 300 ms each between the initial current value (35% I and the final current value (130% IΔN). This results in a gradation for which each step corresponds to a constant test current which is applied for no longer than 300 ms, assuming that tripping does not occur.

And thus both tripping current and tripping time are measured and displayed.

and tA is the simultaneous measurement of

ΔN

)

ΔN

Connection

Start Contact Voltage Measurement

Start Tripping Test

Set Parameters

The measurement sequence can be broken off prematurely at any time by pressing the ON/START key.

Measurement Results

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14.8 Testing Residual Current Monitors

Nom. res. current: 10 ... 500 mA

Waveform:

Nominal current: 6 ... 125 A

Type : A , B *

* Type B = AC/DC sensitive

X times tripping current:

Connection: without/with probe

System type: TN/TT, IT

Contact voltage:

< 25 V, < 50 V, < 65 V

– RCM Function (PROFITEST MXTRA only)

General

Residual current monitors (RCMs) monitor residual current in elec-

trical systems and display it continuously. As is also the case with residual current devices, external switching devices can be controlled in order to shut down supply power in the event that a specified residual current value is exceeded.

However, the advantage of an RCM is that the user is informed of fault current within the system before shutdown takes place.

As opposed to individual measurement of I

, measurement results

must be evaluated manually in this case.

If an RCM is used in combination with an external switching device, the combination must be tested as if it were an RCD.

ΔN

and

Connection

Measure Contact Voltage

Non-Tripping Test with 1/2 x I

and 10 s

Set Parameters for I

After 10 seconds have passed, no fault current may be signalled. The measurement must be evaluated afterwards. In the event that “NOT OK” is selected (in case of false alarm), an error is indicated by the UL/RL LED which lights up red.

The measured value cannot be saved to memory and included in the test report until it has been evaluated.

Tripping Test with 1 x I

ΔN

– Measurement of Signal Response Time (stopwatch function) with the Residual Current Generated by the Test Instrument

In order to document the tripping time, the measurement must be stopped manually with the ON/START or I the fault current has been signalled.

In the event that “NOT OK” is selected, an error is indicated by the

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UL/RL LED which lights up red.

The measured value cannot be saved to memory and included in the test report until it has been evaluated.

key immediately after

ΔN

14.9 Testing the Operating States of Electric Vehicles at

Charging Stations per IEC 61851 (MTECH+ & MXTRA only)

A charging station is an equipment designed for the charging of electric vehicles per IEC 61851which essentially consists of a plug connector, a cable protection, a residual current device (RCD), as well as a circuit breaker and a security communication system (PWM). Depending on the place of installation and application, further functional features such as mains connection and meter may be included.

Adapter selection (test box)

Simulation of operating states per IEC 61851with the MENNEKES test box

(Status A – E) The MENNEKES test box only serves the purpose of simulating dif-

ferent operating states of an electric vehicle fictitiously connected with a charging station. The settings for the simulated operating states are indicated in the operating instructions for the test box.

Status C – Non-gassing vehicle identified

• Readiness for charging on the vehicle/power side is activated,

• Voltage between PE and CP is +6 V / –12 V.

Status D – Gassing vehicle identified

• Readiness for charging on the vehicle/power side is activated,

• Voltage between PE and CP is +3 V / –12 V.

The simulated operating states can be stored in the MTECH+ or MXTRA as visual inspection and documented in the ETC software.

The operating state (status) to be tested is selected with the

SECLECT STATUS key at the MTECH+ or MXTRA test instrument.

Status A – Charging conductor only connected with charging point

• CP signal is switched on,

• voltage between PE and CP is 12 V.

Status B – Charging conductor connected with charging point and vehicle

• the charging conductor is locked at the charging point and in

the vehicle,

• vehicle not yet ready for charging,

• voltage between PE and CP is +9 V / –12 V.

Status E – Conductor is damaged

• Short circuit between PE and CP,

• Charging conductor is unlocked at the charging point,

• Voltage between PE and CP is +0 V.

Semi-automatic changing between operating states

As an alternative to the manual changing between operating states via the parameter menu of the SECLECT STATUS softkey at the test instrument, there is another fast and convenient way of changing between the operating states: select status parameter AUTO. Each time after replying to and storing a visual inspection, an automatic changeover to the next state takes place, with the keys shown on the display corresponding to 01/05 A/E (01 = A, 02 = B, 03 = C, 04 = D, 05 = E).

It is possible to skip the status variants by pressing key I test instrument or at the test socket.

ΔN

at the

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14.10 Test Sequences for Report Generation of Fault Simulations

Attention!

on PRCDs with PROFITEST PRCD

The following functions can be performed when the

PROFITEST MXTRA test instrument is connected with the PROFITEST PRCD test adapter:

• Three test sequences are preconfigured: – PRCD-S (single phase/3-pole) – PRCD-K (single phase/3-pole) – PRCD-S (three-phase/5-pole)

• The test instrument guides you through all test steps in a semi-automatic fashion: Single phase PRCDs: – PRCD-S: 11 test steps – PRCD-K: 4 test steps 3-phase PRCDs: – PRCD-S: 18 test steps

• Each test step is assessed and evaluated by the user (OK/not OK) for subsequent report generation purposes.

• Measurement of protective conductor resistance of the PRCD by means of function R that the protective conductor measurement represents a modified RLO measurement with ramp curve for PRCDs, see section 12.

• Measurement of insulation resistance of the PRCD by means of function R

• Trip test with nominal fault current by means of function I at the test instrument, see section 7.3.

• Measurement of tripping time by means of function I test instrument, see section 7.3.

• Varistor test with PRCD-K: measurement via ISO ramp, see section 11.

at the test instrument, see section 11.

INS

at the test instrument. Please note

Adapter (MXTRA only)

at the

ΔN

14.10.2 Parameter Settings

Meaning of Symbols for the Respective Fault Simulation

Switch Position

PROFITEST PRCD

PE-U

—AUTOAUTO

Symbols shown at PROFITEST MXTRA

Parameter Setting

ON 1~ON

ON 3~ON

BREAK Lx

Lx <-> PE Lx <-> N

Uext -> PE

EXT

PROBE

PRCD-Ip

Meaning of Symbols

Menu Display

Activate single phase PRCD

Activate 3-phase PRCD

Disconnection of conductor

Conductor exchange between phase conductor and PE or neutral conductor

PE to phase Contact key ON at PRCD with

probe Protective conductor current

measurement with current clamp transformer

Semi-automatic changing of fault simulations

Parameter PRCD-S single phase – 11 parameters = 11 test steps

Together with the required intermediate steps for PRCD activation (=ON), the parameters for the fault simulations represent die 11 potential test steps: Interruption (BREAK...), conductor exchange (L1 <-> PE), PE to phase (Uext -> PE), contacting of key ON, protective conductor current measurement (Figure on the right: PRCD-Ip) .

It is imperative that you read the operating instructions for PROFITEST PRCD before connecting the

PROFITEST MXTRA with the PRCD adapter.

14.10.1 Selecting the PRCD under Test

Parameter PRCD-S 3-phase – 18 parameters = 18 test steps

Parameter PRCD-K single phase – 5 parameters = 5 test steps

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14.10.3 Test Sequence PRCD-S (single phase) – 11 Test Steps

Selection Examples

Simulation Interruption (Steps 1 to 6)

Simulation Conductor Exchange (Step 7)

Selection Examples Simulation Interruption (Steps 1 to 10)

Simulation Conductor Exchange (Steps 11 to 16)

Simulation PE to Phase (Step 8)

Contacting Key ON at PRCD with Probe (Step 10)

Measurement of Protective Conductor Current with a Current Clamp Transformer (Step 11)

14.10.4 Test Sequence PRCD-S (three-phase) – 18 Test Steps

Simulation PE to Phase (Step 17)

Measurement of Protective Conductor Current with Current Clamp Transformer (Step 18)

Semi-automatic Change of Fault Simulations (Statuses)

As an alternative to changing manually between the fault simulations via the parameter menu of the respective PRCD selection PRCD-S 1~, PRCD-K 1~ or PRCD-S 3~ at the test instrument, it is possible to switch quickly and conveniently between the fault simulations. Select status parameter AUTO for this purpose. After replying to and storing each visual inspection, an automatic switch-over to the next fault simulation takes place. Individual fault simulations can be skipped by pressing key I ment or at the test plug.

at the test instru-

ΔN

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15 Automatic Test Sequences – AUTO Function

Note

1 2 3 4

5 6 7

109

11 12

Verwendetes Prüfgerät auswählen!

If the same order of tests with subsequent report generation is to be performed repeatedly, as is, for example, specified by certain standards, we recommend using test sequences.

With the help of test sequences it is possible to compile automatic test procedures on the basis of the manual individual measurements. A test sequence consists of up to 200 individual test steps which have to be processed one after the other. Basically, a distinction is made between three types of individual steps:

• Note: the test procedure is interrupted by a pop-up note for the test engineer. It is not continued before the test engineer acknowledges the note. Example: Note prior to insulation resistance measurement: „Disconnect the device from the mains!“

• Visual inspection, testing and report: the test procedure is interrupted by a pop-up window of a passed/failed evaluation, comments on and results of the evaluation are saved in the database.

• Measurement: Measurement like the individual measurements performed by the test instruments with data storage and parameter configuration.

The test sequences are created at a PC by means of the ETC software and are then transferred to the test instruments.

The measurement parameters are also configured at a PC. However, they can still be modified at the test instrument during the test procedure before the respective measurement is launched.

After restarting the test step, the parameter settings defined in ETC are loaded.

The parameters are not subjected to a plausibility check by the ETC software. We therefore advise you to test the newly created test sequence at the test instrument before filing it permanently in your database.

Step-by-step Overview: Generating Test Sequences at the PC

1 Generate new test sequence – enter denomination 2 Change denomination of the selected test sequence 3 Duplicate selected test sequence,

(copy) is added at the end of the duplicated name 4 Delete selected test sequence 5 Generate and/or add new test step for selected test sequence

– Choose the type of test step from the list and accept or modify the

denomination 6 Duplicate selected test step 7 Delete selected test step 8 Change the order of the selected test steps 9 Select measuring parameters for the selected type of test step from the list

10 Choose the setting for the measuring parameters from the list 11 Accept modification for the measuring parameter 12 Close test sequence menu

Limit values are currently not defined in ETC, but have to be adjusted during the automatic test sequence.

Menu for the Processing of Test Sequences

In order to process existing test sequences, to add, for example, further test sequences or to adjust parameter settings, they have to be loaded to the ETC PC software beforehand.

There are two possibilities to do this:

•ETC: Extras → Test sequences → Load test sequences

(from file „pruefsequenzenxyz.seq“)

• ETC: Device → Test sequences → Receive test sequences

(from the connected test instrument PROFITEST MPRO or

PROFITEST MXTRA)

Saving Test Sequences to the ETC Software at the PC

We recommend saving the test sequences of the default setting, modified as well as newly created test sequences via command „Extras → Test sequences → Save test sequences“ to the PC or other storage media under a file name (testsequencesxyz.seq). This helps to prevent data loss as a result of certain administrative operations, see the following remarks.

As a maximum of 10 test sequences can be transferred to the test instrument, it is not possible to save more than 10 test sequences in one file.

Via command „Extras → Test sequences → Load test sequences“ the test sequences saved to a file can be reloaded to the ETC software at any time. For subsequent processing select command „Extras → Test sequences → Edit test sequences“.

Please note that the active test sequences in the ETC software are deleted by the following operations:

• by receiving test sequences from the test instrument

(ETC: Device → Test sequences → Receive test sequences)

• by changing the user language (ETC: Language → ...)

• by saving the data from the test instrument

(ETC: Device → Backup/Restore → Backup)

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Please note that the test sequences loaded to the test instrument

AUTO

are deleted by the following operations in the test instrument:

• by receiving selection lists from the PC

(ETC: Device → Selection lists → Transmit selection lists)

• by receiving new test sequences from the PC

(ETC: Device → Test sequences → Send test sequences)

• by transmitting the saved data to the test instrument

(ETC: Device → Backup/Restore → Restore)

• by resetting to default settings

(Switch position SETUP → key GOME SETTING)

• by firmware updates

• by changing the user language

(Swith position SETUP → key CULTURE)

• by deleting the entire database in the test instrument

Selecting and Starting a Test Sequence at the Test Instrument

Figure 15.1

Transferring Test Sequences from the PC to the Test Instrument

After activating the ETC command „Device → Test sequences → Send test sequences“ all test sequences that have been created (maximum of 10) are transferred to the connected test instrument.

During the transfer of the test sequences the above progress bargraph is shown at the PC screen and the righthand image appears on the display of the test instrument.

After the data transfer has been completed, the display switches to the storage menu „database“.

By pressing ESC you proceed to the measurement menu display of the current switch position.

Selecting Switch Position AUTO at the Test Instrument

Press the START key to launch the selected test sequence (here: SEQU.1).

When executing a test step of the measurement type, the display structure known from the individual measurements is shown. Instead of the storage and battery symbol, the current test step number is shown in the header (here: step 01 of 06), see figure

15.2. The next test step is shown after pressing the „Save“ key twice.

Setting Parameters and Limit Values

Parameters and limit values can also be modified while performing a test sequence or before starting the measurement. This modification only affects the active test procedure and is not saved.

Skipping of Test Steps

There are two possibilities to skip test steps and/or individual measurements:

• Activate test sequence, switch to the right-hand test step column with the cursor, select the x START.

• Within a test sequence, the navigation menu is activated by pressing the navigation key Cursor leftright. Switch to the previous or next test step with the cursors which are now displayed separately. Leave the navigation menu and reactivate the current test step with ESC.

test step and press key

Interrupt or Abort a Test Sequence

An active sequence is aborted with ESC and subsequent confirmation.

When the last test step is completed, the message „Sequence completed“ is shown. After confirming this message, the start menu „List of test sequences“ appears on the display.

Figure 15.2

When the rotary switch is set to AUTO, all existing test sequenes in the instrument are displayed, see figure 15.1.

If there are no test sequences in the instrument, message „NO DATA“ appears.

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16 Database

16.1 Creating Distributor Structures, General

A complete distributor structure with data for electrical circuits and RCDs can be created in the PROFITEST MASTER test instru- ment. This structure makes it possible to assign measurements to the electrical circuits of various distributors, buildings and customers.

There are two possible procedures:

• On location or at the construction site: Create the distributor structure in the test instrument. A distributor structure with up to 50,000 structural elements can be created in the test instrument, which is saved to the instrument’s flash memory.

• Create and save an image of an existing distributor structure at a PC with the help of ETC report generating software (Electric Testing Center) (see condensed operating instructions for ETC report generating software). The distributor structure is then transferred to the test instrument.

16.2 Transferring Distributor Structures

The following data transfer operations are possible:

• Transfer a distributor structure from the PC to the test instrument.

• Transfer a distributor structure including measured values from the test instrument to the PC.

The test instrument and the PC must be connected with a USB cable in order to transfer distributor structures and data.

The following image appears at the display during transfer of structures and data.

16.3 Creating a Distributor Structure in the Test Instrument

Overview of the Meanings of Icons used to Create Structures

Icon Meaning

Main

Sub-

Level

Memory menu, page 1 of 3

Cursor UP: scroll up

Note regarding ETC Report Generating Software

The following steps must be completed before using the software:

• Install USB device drivers: (required for operation of PROFITEST MASTER with a PC) GMC-I Driver Control software can be downloaded from Gossen Metrawatt's website at:

http://www.gossenmetrawatt.com

→ Products → Software → Software for Testers → Utilities → Driver Control

• Install ETC report generating software: You can download the current ETC version free of charge from our homepage under section mygmc after registration or login:

http://www.gossenmetrawatt.com

→ Products → Software → Software for Testers →

Protocol Software without Database →

ETC → myGMC → zum Login

Cursor DOWN: scroll down

ENTER: acknowledge selection + → – change to sub-level

(open directory) or

– → + change to main level

(close directory)

Display of complete structure designation (max. 63 characters) or ID number (max. 25 characters) in a zoom window

Temporarily switching back and forth between structure designation and ID number.

These keys do not interfere with the main configuration in the setup menu, see DB MODE on page 11.

Hide structure designation or ID number

Change display to menu selection

Memory menu, page 2 of 3

Add a structural element

Meaning of icons from top to bottom: Customer, building, distributor, RCD, electrical cir-

cuit, operating equipment, machine and earth electrode (display of the icons depends on the selected structural element).

Selection: UP/DOWN scroll keys and ↵ In order to add a designation to the selected

structural element, refer to edit menu in following column.

EDIT

For additional icons see edit menu below Delete the selected structural element.

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Icon Meaning

Distributor

A check mark to the right of a structural element means that all measurements within the respective hierarchy have been passed.

Smbol x: at least one measurement has not been passed. No symbol: Measurement has not yet been performed.

Building

Customer

RCDs

Electr. circuit

Equipment

Same type of element as in the Windows Explorer:

+: sub-object available, display by pressing ↵. –: sub-objects are displayed, hide by pressing ↵.

Equipment

Scroll up

Scroll down

Acknowledge selection /

Display object

change level

or ID number

Create object

Delete object

VΩA: show measurement data

Edit designation

Show measurement data, if a measurement has been performed for this structural element.

Edit the selected structural element.

Memory menu, page 3 of 3

Search for ID number. > Enter complete ID number.

Search for text. > Enter full text (complete word).

Search for ID number or text.

Continue searching.

Edit menu

Cursor LEFT: Select an alphanumeric character

Cursor RIGHT: Select an alphanumeric character

ENTER: accept an individual character

Acknowledge entry

←

Cursor left

→

Cursor right Delete characters

Distributor Structure Symbology / Tree Structure

16.3.1 Creating Structures (example for electrical circuit)

After selection with the MEM key, all setting options for the creation of a tree structure are made available on three menu pages (1/3, 2/3 and 3/3). The tree structure consists of structural elements, referred to below as objects.

Select the position at which a new object will be added.

Switching amongst different types of alphanumeric characters:

A Upper case letters

a Lower case letters

0Numbers

@ Special characters

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Use the ↑↓ keys in order to select structural elements. Change to the sub-level with the ↵ key. Go to the next page with the >> key

Create a new object.

Press the key in order to create a new object.

Select a new object from a list.

Note

Scroll up

Scroll down

Acknowledge selection

Select character

Select character ↵ Accept character

Delete characters

Character selection:

✓ Save object designation

A, a, 0, @

Select parameter

→ List of parameter settings

Acknowledge parameter selection

↵ Acknowledge parameter setting

and return to page 1/3

Select parameter setting

in the database menu.

Scroll up

Scroll down

Acknowledge selection /

Display object

Menu selection → page 3/3

change level

or ID number

Search for ID number

Search for text

Search for ID number or text

Select character

Select character ↵ Accept character

Delete characters

Character selection:

✓ Save object designation

Continue searching

Select the desired object from the list with the ↑↓ keys and acknowledge with the ↵ key.

Depending upon the profile selected in the test instrument’s SETUP menu (see section 4.6), the number of object types may be limited, and the hierarchy may be laid out differently.

Enter a designation.

16.3.2 Searching for Structural Elements

The search always starts with database, regardless of the currently marked object.

Go to page 3/3 in the database menu.

After selecting text search

Enter a designation and then acknowledge it by entering a ✓.

Acknowledge the standard or adjusted parameters shown below, because the created designation will otherwise not be accepted and saved.

Set Electrical Circuit Parameters

and entering the desired text (only full matches are found – no wild cards, case sensitive)

For example, nominal current values must be entered here for the selected electrical circuit. Measuring parameters which have been accepted and saved in this way are subsequently accepted by the current measuring menu automatically when the display is switched from the structural view to measurement.

Electrical circuit parameters changed during structure creation are also retained for individual measurements (measurement without saving data).

If you change the electrical circuit parameters defined in the structure of the test instrument, a warning is issued upon saving, see error message on page 81.

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the first match is displayed. Further matches can be found by selecting

the icon shown at the right.

If no further matches are found, the message shown above is dis-

Note

Search for ID number

Search for text

End search

Search for ID number or text

played.

16.4 Saving Data and Generating Reports

Preparing and Executing a Measurement Measurements can be performed and stored to memory for each

structural element. Proceed as follows, adhering to the prescribed sequence:

➭ Select the desired measurement with the rotary knob. ➭ Start the measurement by pressing the ON/START or IΔ

Upon completion of measurement, the “→ Floppy Disk” softkey is displayed.

➭ Briefly press the “Save Value” key.

key.

If you change the parameters in the measurement view, they are not saved for the structural element. A measurement with changed parameters can nevertheless be saved to the structural element, and any changed parameters are documented in the report for each measurement.

Retrieving Saved Measured Values

➭ Switch the display to the distributor structure by pressing the

MEM key and select the desired electrical circuit with the scroll keys.

➭ Switch to page 2

by pressing the key shown here:

➭ Display the measurement data

by pressing the key shown here:

One measurement with date and time, as well as any comment you might have entered, is displayed in each screen. Example: RCD Measurement

The display is switched to the memory menu or the structural view.

➭ Navigate to the desired memory location, i.e. to the desired

structural element / object, for which the measurement data will be saved.

➭ If you would like to save a comment along with the

measurement, press the key shown at the right and enter a designation via the “EDIT” menu as described in section 16.3.1.

➭ Complete data storage by pressing the “STORE” key.

Storage of Error Messages (Pop-ups)

If a measurement is completed without a measured value being produced on account of an error, this measurement can be saved to memory along with the pop-up via the „Save Value“ key. In the ETC the corresponding text is given out instead of the pop-up smybol. This only applies to a limited selection of pop-ups, see below. In the database of the test instrument, neither the symbol nor the text can be retrieved.

A check mark in the header means that the respective measurement has been passed. An X means that the measurement has not been passed.

➭ Scrolling amongst measurements

is possible with the keys shown here:

➭ The measurement can be deleted with the key

shown here:

A prompt window asks you to confirm deletion.

With the help of the key shown at the right (MW: measured value / PA: parameter), the setting parameters can be displayed for this measurement.

Alternative Storage Procedure

➭ The measured value can be saved to the last se-

lected object in the structural diagram by pressing and holding the “Save Value” key, without switching the display to the memory menu.

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➭ Scrolling amongst measurements

is possible with the keys shown here:

Data Evaluation and Report Generation with ETC Software

Note

All data, including the distributor structure, can be transferred to the PC and evaluated with the help of ETC software. Additional information can be entered here subsequently for the individual measurements. After pressing the appropriate key, a report including all measurements within a given distributor structure is generated, or the data are exported to an Excel spreadsheet.

The database is exited when the rotary selector switch is turned. Previously selected parameters in the database are not used for the measurement.

16.4.1 Use of Barcode Scanners and RFID Readers

Search for an Already Scanned Barcode

The search can be started from any switch setting and menu. ➭ Scan the object’s barcode.

The found barcode is displayed inversely. ➭ This value is accepted after pressing the ENTER key.

A previously selected object is not taken into consideration by the search.

Continued Searching in General

Regardless of whether or not an object has been found, searching can be continued by pressing this key:

– Object found: Searching is continued underneath the pre-

viously selected object.

– No further object found: The entire database is searched

at all levels.

Reading In a Barcode for Editing

If the menu for alphanumeric entry is active, any value scanned by means of a barcode or RFID reader is accepted directly.

Using a Barcode Printer (accessory)

A barcode printer allows for the following applications:

• Read-out of ID numbers encrypted as barcodes; for quick

and convenient acquisition for periodic testing

• Read-out of repeatedly occurring designations such as test

object types encrypted as barcodes in a list, allowing them to be read in as required for comments.

70 GMC-I Messtechnik GmbH

17 Operating and Display Elements

Attention!

Note

(7) Alligator Clip (plug-on)

Test Instrument and Adapter

(1) Control Panel – Display Panel

The following are displayed at the LCD:

• One or two measurement values as three place numeric display with unit of measure and abbreviated measured quantity

• Nominal values for voltage and frequency

• Circuit diagrams

• On-line help

• Messages and instructions

The display and control panel can be swiveled forward or backward with the detented swivel hinge. The instrument can thus be set to the optimum reading angle.

(2) Eyelets for the Shoulder Strap

The included shoulder strap can be attached at the right and left hand sides of the instrument. You can hang the instrument from your shoulder and keep both hands free for measurement.

(3) Rotary Selector Switch

The following basic functions can be selected with this rotary switch:

SETUP / IΔN / IF / Z SOR / EXTRA / AUTO

The various basic functions are selected by turning the function selector switch while the instrument is switched on.

(4) Measuring Adapter

The measuring adapter (2-pole) may only be used together with the test instrument’s test plug. Use for other purposes is prohibited!

The plug-on measuring adapter (2-pole) with the two test probes is used for measurements in systems without earthing contact outlets, e.g. at permanent installations, distribution cabinets and all three-phase outlets, as well as for insulation resistance and low-value resistance measurements.

The 2-pole measuring adapter can be expanded to three poles for phase sequence testing with the included measurement cable (test probe).

(5) Plug Insert (country-specific)

L-P E

/ Z

L-N

/ RE / R

/ R

ISO

/ U / SEN-

INS)

(8) Test Probes

The test probes comprise the second (permanently attached) and third (plug-on) poles of the measuring adapter. A coil cable connects them to the plug-on portion of the measuring adapter.

(9) ON/Start

▼ Key

The measuring sequence for the function selected in the menu is started by pressing this key, either on the test plug or at the control panel. Exception: If the instrument is switched off, it can only be switched on by pressing the key at the control panel.

This key has the same function as the

(10) I

/ I Key (at the control panel)

ΔN

▼ key on the test plug.

The following sequences are triggered by pressing this key, either on the test plug or at the control panel:

• Starts the tripping test after measurement of contact voltage for RCCB testing (I

• Measurement of R

ΔN

OFFSET is started within the R

/ Z

function.

L-N

• Semiautomatic polarity reversal (see section 5.8)

(11) Contact “Surfaces

The contact surfaces are located at both sides of the test plug. When the contact plug is grasped in the hand, contact is automatically made with these surfaces. The contact surfaces are electrically isolated from the terminals and from the measuring circuit. When the rotary switch is set to the “U” position, the instrument can be used as a phase tester for protection class II devices! In the event of a potential difference of greater than 25 V between protective conductor terminal PE and the contact surface, PE is displayed (see also section 18, “LED Indications, Mains Connections and Potential Differences”, beginning on page 73).

(12) Test Plug Holder

The test plug with attached plug insert can be reliably secured to the instrument with the rubberized holder.

(13) Fuses

The two fuses protect the instrument against overload. Phase conductor L and neutral conductor N are fused individually. If a fuse is defective, and if an attempt is made to perform a measurement which uses the circuit protected by this fuse, a corresponding message appears at the display panel.

The plug insert may only be used together with the test instrument’s test plug. Use for other purposes is prohibited!

After the plug insert has been attached, the instrument can be

Severe damage to the instrument may occur if incorrect fuses are used. Only original fuses from GMC-I Messtechnik GmbH assure required protection by means of suitable blowing characteristics, see section 20.3.

directly connected to earthing contact outlets. You need not concern yourself with poling at the plug. The instrument detects the positions of phase conductor L and neutral conductor N and automatically reverses polarity if necessary. The instrument automatically determines whether or not both pro-

The voltage ranges remain functional even if fuses have blown.

tective contacts in the earthing contact outlet are connected to one another, as well as to the system protective conductor, for all

(14) Holders for Test Probes (8)

types of protective conductor measurements when the plug insert is attached to the test plug.

(15/16) Current Clamp Sockets

Only the current clamp transformers offered as accessories may

(6) Test Plug

be connected to these sockets. The various country specific plug inserts (e.g. protective contact plug insert for Germany or SEV plug insert for Switzerland) or the measuring adapter (2-pole) are attached to the test plug and secured with a threaded connector.

The controls on the test plug are subject to interference suppression filtering. This may lead to slightly delayed responses as opposed to controls located directly on the instrument.

(17) Probe Connector Socket

The probe connector socket is required for the measurement of

probe voltage U

tance R

and standing surface insulation resistance.

, earth electrode voltage UE, earthing resis-

S-PE

It can be used for the measurement of contact voltage during

RCD testing. The probe is connected with a 4 mm contact pro-

tected plug.

GMC-I Messtechnik GmbH 71

The instrument determines whether or not the probe has been

Attention!

properly set and displays results at the display panel.

(18) USB Port

The USB port allows for the exchange of data between the test instrument and a PC.

(19) RS 232 Port

This connection allows for data entry by means of a barcode scanner or an RFID reader.

(20) Charging Socket

This socket may only be used to connect the Z502R charger for recharging batteries in the instrument.

(21) Battery Compartment Lid – Replacement Fuses

Control Panel – LEDs

MAINS/NETZ LED

This LED is only functional when the instrument is switched on. It has no function in voltage ranges U It lights up green, red or orange, or blinks green or red depending upon how the instrument has been connected and the selected function (see also section 18, “LED Indications, Mains Connections and Potential Differences”, beginning on page 73). This LED also lights up if line voltage is present during measurement of R

UL/RL LED

This LED lights up red if contact voltage is greater than 25 V or 50 V during RCD testing, as well as after safety shut-down occurs. It also lights up if R exceeded or fallen short of.

and RLO.

INS

or RLO limit values have been

INS

L-N

and U

L-P E

When the lid is removed, the instrument must be disconnected from the measuring circuit at all poles!

The battery compartment lid covers the Compact Master Battery Pack (Z502H) or a battery holder with the batteries and the replacement fuses.

The battery holder or the Z502H battery pack is designed for use with eight 1.5 V AA batteries in accordance with IEC LR 6 for power supply to the instrument. When inserting batteries, make sure that they are poled in accordance with the symbols.

Make sure that all of the batteries are inserted with correct polarity. If just one battery is inserted with reversed polarity, it will not be recognized by the instrument and may result in leakage from the batteries.

Two replacement fuses are located beneath the battery compartment lid.

RCD • FI LED

This LED lights up red if the RCCB is not tripped within 400 ms (1000 ms for type RCD S selective RCDs) during the tripping test with nominal residual current. It also lights up if the RCCB is not tripped before nominal residual current has been reached during measurement with rising residual current.

72 GMC-I Messtechnik GmbH

18 LED Indications, Mains Connections and Potential Differences

???

NPEL

NPELxNPELxNPEL

NPEL

Status

LED Indications

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

UL/R

FI/RCD

Lights up

green

Blinks

green

Lights up

orange

Blinks red

Lights up

red

Blinks Yel-

low

Lights up

red

Lights up

red

Tes t plug

Meas. Adapter

Position of the Function Switch

/ IF

ΔN

/ Z

L-P E

/ IF

ΔN

/ Z

L-P E

/ IF

ΔN

/ Z

L-P E

/ IF

ΔN

/ Z

L-P E

/ R

INS

/ IF

ΔN

/ Z

L-P E

ΔN

/ R

INS

/ IF

ΔN

int. ramp

/ R

L-N

ΔU, ZST, kWh, IMD,

int. ramp, RCM

L-N

ΔU, ZST, kWh, IMD,

int. ramp, RCM

L-N

ΔU, ZST, kWh, IMD,

int. ramp, RCM

L-N

Function / Meaning

Correct connection, measurement enabled

N conductor not connected, measurement enabled

Line voltage of 65 V to 253 V to PE, 2 different phases active (no N conductor at mains), measurement enabled

1) No line voltage or

2) PE interrupted

Interference voltage detected, measurement disabled

L and N are connected to the phase conductors.

– Contact voltage U – Safety shut-down has occurred – Limit value exceeded or fallen short of for R The RCCB was not tripped, or was tripped too late during the tripping

test.

and UIΔ >25V respectively >50V

IΔN

/ RLO function

INS

Mains Connection Test — Single-Phase System — LCD Connection Pictographs

is displayed

All except for U No connection detected

All except for U Connection OK

All except for U L and N reversed, neutral conductor charged with phase voltage

All except for U and RE

No mains connection

RE Standard display without connection messages

All except for U Neutral conductor interrupted

Protective conductor PE interrupted,

All except for U

neutral conductor N and/or phase conductor L charged with phase voltage

All except for U

Phase conductor L interrupted, neutral conductor N charged with phase voltage

All except for U Phase conductor L and protective conductor PE reversed

is displayed

GMC-I Messtechnik GmbH 73

All except for U

All except for U L and N are connected to the phase conductors.

Phase conductor L and protective conductor PE reversed Neutral conductor interrupted (with probe only)

Status

NPEL

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

Mains Connection Test — 3-Phase System — LCD Connection Pictographs

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

(3-phase measurement)

Clockwise rotation

Counter-clockwise rotation

Short between L1 and L2

Short between L1 and L3

Short between L2 and L3

Conductor L1 missing

Conductor L2 missing

Conductor L3 missing

Conductor L1 to N

is dis-

played

is dis-

played

(3-phase measurement)

Connection Test — Earthing resistance (battery operation)

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

is dis-

played

PRO-RE RE

Messza

nge

PRO-RE RE

RE Standard display without connection messages

Conductor L2 to N

Conductor L3 to N

Interference voltage at probe S > 3 V Restricted measuring accuracy Interference current/measuring current ratio > 50 at RE(sel), 1000 at RE(2Z) Restricted measuring accuracy at RE(sel): Interference current > 0,85 A

or Interference current/measuring current ratio > 100

➭ no measured value, display RE.Z – – –

Probe H not connected or RE.H > 150 kΩ

➭ no measurment, display RE – – –

RE.H > 50 kΩ or RE.H / RE > 10000

➭ Measured value is displayed, restricted measuring accuracy

Probe S not connected or RE.S > 150 kΩ

or RE.S x RE.H > 25 MΩ²

➭ no measurment, display RE – – –

RE.S > 50 kΩ or RE.S / RE > 300

➭ Measured value is displayed, restricted measuring accuracy

Probe E not connected or RE.E > 150 kΩ, RE.E/RE > 2000

➭ no measurment, display RE – – –

RE.E/RE > 300

➭ Measured value is displayed, restricted measuring accuracy

74 GMC-I Messtechnik GmbH

Status

Battery Test

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

is displayed

All

Rechargeable batteries must be recharged, or replaced towards the end of their service life (U < 8 V).

PE test by means of finger contact at the contact surfaces on the test plug LCD LEDs

is displayed

L/RL

FI/RCD

light up

red

L/RL

FI/RCD

light up

red

(single-phase

measurement)

(single-phase

measurement)

Potential difference ≥ 50 V between finger contact and PE (earth contact) Frequency f ≥ 50 Hz

If L is correctly contacted and PE is interrupted (Frequency f ≥ 50 Hz)

Error Messages — LCD Pictographs

Potential difference ≥ U (Frequency f ≥ 50 Hz) Remedy: inspect PE connection Note: only when appears: measurement can nevertheless be

started by pressing the start key again.

1) Voltage too high (U > 253 V) for RCD test with direct current

2) U always U > 550 V with 500 mA

3) U > 440 V for I

4) U > 253 V for I

5) U > 253 V for measurement with probe

All measurements

with protective

conductor

/ IF

ΔN

/ Z

L-P E

/ R

L-N

between finger contact and PE (earth contact)

/ IF

ΔN

/ IF with 500 mA

ΔN

XX I

XX Z

XX I

ΔN

L-PE

/ I

EXTRA → PRCD

X X All except for U

/ IF

ΔN

/ Z

L-P E

/ R

L-N

RCD is tripped too early, or is defective. Remedy: test circuit for bias current

RCD is tripped too early, or is defective. Remedy: Test with “DC + positive half-wave”.

RCD tripped during contact voltage measurement. Remedy: Check selected nominal test current.

PRCD has tripped. Cause: poor contact or defective PRCD

Externally accessible fuse is blown. The voltage ranges remain functional even if fuses have blown.

Special case, R

blown fuse.

: Interference voltage during measurement may result in a

Remedy: Replace fuse (replacement fuses in battery compartment).

Observe notes regarding fuse replacement in section 20.3!

Frequency out of permissible range Remedy: inspect mains connection

GMC-I Messtechnik GmbH 75

Status

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

All

XX R

INS

/ R

PRO-RE RE (bat)

PRO-RE

PRO-RE/

XX R

RE (bat) Probe ES not connected or connected wrong.

RE (bat) Generator current clamp (E-Clip-2) not connected

All measurements

with probe

/ R

INS

Excessive temperature inside the test instrument Remedy: wait for test instrument to cool down

Interference voltage Remedy: device under test must be disconnected from all sources of voltage Interference voltage > 20 V at the probes: H to E or S to E no measurement possible

Interference voltage at the probe

Overvoltage or overloading of the measuring voltage generator during measurement of R

INS

or R

IΔN / IF

/ Z

L-N

ZST, RST, R

L-P E

Meter start-up

XX All

XX R

XEXTRA → ΔU

No mains connection Remedy: inspect mains connection

Defective hardware Remedy:

1) Switch on and off. or

2) Briefly remove the batteries. If error message persists, send instrument to GMC-I Service GmbH.

OFFSET measurement is not sensible. Remedy: Check system. OFFSET measurement of RLO+ and RLO– is still possible.

OFFSET

> 10 Ω:

OFFSET measurement is not sensible. Remedy: Check system.

Z > 10 Ω: OFFSET measurement is not sensible. Remedy: Check system.

ΔU

OFFSET

> ΔU:

Offset value is larger than the measured value at the consuming system. OFFSET measurement is not sensible. Remedy: Check system.

Contact problem or blown fuse

XXR

/ RLO / R

INS

Remedy: Check test plug or measuring adapter for correct seating in the

E(bat)

test plug, or replace the fuse.

76 GMC-I Messtechnik GmbH

Status

IΔN/I

10 mA 30 mA 100 mA 300 mA 500 mA

MAX

for I

ΔN

510 Ω 170 Ω 50 Ω 15 Ω 9 Ω

MAX

for I

410 Ω 140 Ω 40 Ω 12 Ω 7 Ω

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

XREThe polarity of the 2-pole adapter must be reversed.

/ IF N and PE are swapped.

ΔN

1) Mains connection error

2) Display in the connection pictograph: PE interrupted (x) or

/ IF

ΔN

/ Z

L-PE

/ R

L-N

Note: only if appears: Measurement can nevertheless be started by pressing the start key again.

Display at the connection pictograph: Overlying protective conductor bar interrupted with reference to the keys

ΔN

/ IF

at the test plug Cause: current measuring path interrupted Result: no measured value display

ΔN

/ IF

Probe is not detected, probe not connected Remedy: inspect probe connection

Clamp is not detected: – Clamp is not connected or

– Current through clamp is too small (partial earth resistance too high) or

– Transformation ratio set incorrectly Remedy: Check clamp connection and transformation ratio.

Remedy: Inspect mains connection.

underlying protective conductor bar interrupted with reference to the keys at the test plug Cause: voltage measuring path interrupted Result: measurement is disabled

Check the batteries in the METRAFLEX P300 and replace if necessary.

ΔN

L-P E

All

/ IF

, R

If you have changed the transformation ratio at the test instrument, a message appears prompting you to change the setting at the current clamp sensor as well.

Voltage too high at clamp input or signal distorted The transformation ratio parameter selected at the test instrument might

not correspond to the transformation ratio at the current clamp sensor. Remedy: Check transformation ratio or setup.

Battery voltage is less than or equal to 8 V. Reliable measurement is no longer possible. Storage of measured values to memory is disabled. Remedy: Rechargeable batteries must be recharged, or replaced towards

the end of their service life. Resistance in N-PE path is too high.

Consequence: Required test current cannot be generated, measurement is aborted.

Upon exceeding the specified contact voltage UL:

and RE: request to switch to the 15 mA wave

L-P E

only R Request to reduce the measuring range (reduce current)

alternatively:

GMC-I Messtechnik GmbH 77

Status

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

Entry Plausibility Check – Parameters Combination Checking — LCD Pictographs

Parameter out of range

IΔN / IF 5 x 500 mA is not possible

IΔN / IF Type B, B+ and EV/MI not possible with G/R, SRCD and PRCD

ΔN

/ IF DC not possible with G/R, SRCD, PRCD

ΔN

180° not possible for G/R, SRCD, PRCD

IΔN / IF Half-wave or DC not possible with type AC, F, B+ and EV/MI

IΔN / IF

DC not possible with type A

EXTRA → RCM

1/2 test current not possible with DC

ΔN

2 x / 5 x IdN with full-wave only

ΔN

Not without probe in IT network!

Battery powered measurement not possible,

/ IF DC+ with 10 Ω only

ΔN

78 GMC-I Messtechnik GmbH

e.g. with 4-pole adapter connected to the test plug, or for 2-clamp measurement of measurement of soil resistivity

Mains powered measurement not possible, e.g. with 2/3-pole adapter connected to the test plug

No DC bias magnetization in the IT network

Status

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

15 mA only possible in the 1 kΩ and 100 Ω range!

15 mA only as loop measurement with or without probe

EXTRA → RCM With RCM: TYPE AC, F , B, B+ and EV/MI not possible

/ IF No measurement with half-wave or DC in the IT network

ΔN

The parameters you have selected do not make sense in combination

All

with previously configured parameters. The selected parameter settings will not be saved.

Remedy: Enter other parameter settings.

2 pole measurement via earthing contact plug (not possible in IT systems)

EXTRA → ta+IΔ The intelligent ramp is not possible with RCD types RCD-S and G/R.

GMC-I Messtechnik GmbH 79

Status

Tes t plug

Meas. Adapter

Position of the Function Switch

Function / Meaning

Messages — LCD Pictographs — Test sequences

The test sequence includes a measurement which cannot be processed

AUTO

AUTO The test sequence has been successfully completed.

AUTO

by the connected test instrument. The respective test step must be skipped. Example: The test sequence includes a RCM measurement which has been transferred to PROFITEST MTECH.

There are no test sequences available. Cause: They may have been deleted by the following operations: Chang-

ing of language, profile, DB mode or by resetting the test instrument to default values.

Error Messages — LCD Pictographs — PRO-AB Leakage Current Adapter

Measuring range exceeded

EXTRA → I

Change into the bigger measuring range (test instrument and leakage

current measuring adapter).

Test measurement: The test has been passed sucessfully.

The leakage current measuring adapter is now ready for use.

EXTRA → I

Test measurement: The test has failed.

The leakage current measuring adapter is defective. Please consult our repair service.

Test measurement:

Check the fuse in the leakage current measuring adapter.

80 GMC-I Messtechnik GmbH

Status

Tes t plug

Meas. Adapter

Position of the Function Switch

Database and Entry Operations — LCD Pictographs

IΔN / IF

/ Z

L-N

EXTRA → t EXTRA → RCM

All Please enter a designation (alphanumeric).

All

L-PE

A+IΔ

Function / Meaning

Saving a measured value with differing electrical circuit parameter The electrical circuit parameter you have set at the test instrument does

not correspond to the parameter saved in the structure under object data. Example: The residual operating current defined in the database is 10 mA,

whereas you have performed measurements with 100 mA. If you wish to perform all future measurements with 100 mA, the value must be modified in the database by acknowledging it with . The measured value will be documented and the new parameter will be accepted.

If you wish to leave the parameter in the database unchanged, press key

. Measured value and modified parameter will only be documented.

Operation with a Barcode Scanner Error message appears when the “EDIT” entry field is opened and battery

voltage is less than 8 V. Output voltage is generally switched off during barcode scanner operation if U is less than 8 V in order to assure that remaining battery capacity is adequate for entering designations for devices under test and saving the measurement.

Remedy: Rechargeable batteries must be recharged, or replaced towards the end of their service life.

Operation with a Barcode Scanner Current flowing through the RS 232 port is too high. Remedy:

The connected device is not suitable for this port.

All

SETUP

Operation with a Barcode Scanner Barcode not recognized, incorrect syntax

Data cannot be entered at this location within the structure. Remedy: Observe profile for preselected PC software (see SETUP menu).

Measured value cannot be saved at this location within the structure. Remedy: Make sure that you have selected the right profile for you PC

evaluation program in the SETUP menu (see section 4.6).

Memory is full.

Remedy: Save your measurement data to a PC and then clear memory at test instrument by deleting the database or by importing an empty database.

Delete measurement or database.

This prompt window asks you to confirm deletion.

Data loss after changing language or profile, or after restoring default settings.

Back up your measurement data to a PC before pressing the respective key.

This prompt window asks you to confirm deletion.

This error message appears when the database, i. e. the structure created in the ETC software, is too large for the device memory.

All

GMC-I Messtechnik GmbH 81

The database in the device memory is empty after database transfer has been interrupted.

Remedy: Reduce the database in ETC or send the database without measured vales (key Send structure) if measured values should already be available.

19 Characteristic Values

Characteristic Values MBASE+ & MTECH+

Func-

tion

Measured

Quantity

L-PE

N-PE

PROBE

L-N

IΔN

Display Range

0 ... 99.9 V 0.1 V

100 ... 600 V 1 V ±(2% rdg.+1d) ±(1% rdg.+1d)

15.0 ... 99.9 Hz 100 ... 999 Hz

0 ... 99.9 V

100 ... 600 V

0 ... 99.9 V

100 ... 600 V

0 ... 99.9 V

100 ... 600 V

0 ... 70.0 V 0.1 V 0.3 · I

10 Ω ... 999 Ω

1.00 kΩ ... 6.51 k

3 Ω ... 999 Ω

1 kΩ ... 2.17 kΩ

ΔN

IF (IΔN = 6 mA) 1.8 ... 7.8 mA

(IΔN = 10 mA) 3.0 ... 13.0 mA 3.0 ... 13.0 mA 3.0 ... 13.0 mA

(IΔN = 30 mA) 9.0 ... 39.0 mA 9.0 ... 39.0 mA 9.0 ... 39.0 mA

(IΔN = 100 mA) 30 ... 130 mA 1 mA 30 ... 130 mA 30 ... 130 mA

(IΔN = 300 mA) 90 ... 390 mA 1 mA 90 ... 390 mA 90 ... 390 mA

(IΔN = 500 mA) 150 ... 650 mA 1 mA 150 ... 650 mA 150 ... 650 mA

/ UL = 25 V 0 ... 25.0 V

IΔ

/ UL = 50 V 0 ... 50.0 V 0 ... 50.0 V

IΔ

(IΔN · 1) 0 ... 1000 ms 1 ms 6 ... 500 mA 0 ... 1000 ms

(IΔN · 2) 0 ... 1000 ms

(IΔN · 5) 0 ... 40 ms 1 ms

()

L-P E

L-N

L-P E

+ DC

L-P E

L-PE

L-N

+ DC)

0.3 Ω ... 99.9 Ω 100 Ω ... 217 Ω

0.2 Ω ... 9.9 Ω 10 Ω ... 130 Ω

1.00 ... 9.99 Ω

10.0 ... 29.9 Ω

1.00 ... 9.99 kA

10.0 ... 50.0 kA

1Ω ... 651 Ω 1Ω

0 ... 999 mΩ

0 ... 9.9 A

10 ... 999 A

Resolution

0.1 Hz 1 Hz

0.1 V 1 V

1 Ω

0.01 kΩ 1 Ω

0.01 kΩ

0.1 Ω 1 Ω

0,1 mA

0.1 V wie I

1 mΩ

0.01 Ω

0.1 Ω

0,1 A

1 A

10 A

100 A

0.5 ... 9.99 Ω 0.01 Ω only display range

(15 mA)

L-PE

IK (15 mA)

RE (with probe)

(without probe)

values as Z

RE DC+

TRA

clip

EX-

Sel

RE DC+ 0 ... 999 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

100 ... 999 mA

0.00 ... 9.99 A

10.0 ... 99.9 A

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

]

L-PE

1 kΩ ... 9.99 kΩ

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 29.9 Ω

0 ... 253 V 1 V — calculated value

0 ... 999 Ω

0 ... 30 MΩ 1 kΩ 2.3 mA at 230 V

0.1 Ω 1 Ω

1 mA

0.01 A

0.1 A

1 mΩ

0,01 Ω

0,1 Ω

1 Ω

0.01 kΩ 1 mΩ

0.01 Ω

0.1 Ω

1 mΩ ...

1 Ω

1 mΩ ...

1 Ω

Input Impedance/ Tes t Curr ent

5 MΩ

ΔN

= 10 mA · 1,05

= 30 mA · 1,05

=100 mA · 1,05

=300 mA · 1,05

=500 mA · 1,05

1.8 ... 7.8 mA 1.8 ... 7.8 mA

2 · 6 ... 2 · 500 mA 5 · 6 ... 5 · 300 mA

1.3 ... 3.7 A AC

0.5/1.25 A DC

15 mA AC

1.3 ... 3.7 A AC

1.3 ... 3.7 A AC 400 mA AC

40 mA AC

4 mA AC

1.3 ... 3.7 A AC

0.5/1.25 A DC

1.3 ... 3.7 A AC

0.5/1.25 A DC

Measuring Range Nominal Values

0.3 ... 600 V

DC 15,4 ... 420 Hz ±(0.2% rdg.+1d) ±(0.1% rdg.+1d)

UN = 120/230/

400/500 V

0.3 ... 600 V

1.0 ... 600 V

= 162/3/50/

60/200/400 Hz

5 ... 70 V

calculated value

from

IΔN / IΔN

120 V 230 V

400 V

Measuring

Uncertainty

±(2% rdg.+5d) ±(1% rdg.+5d)

±(3% rdg.+5d) ±(3% rdg.+1d)

±(2% rdg.+5d) ±(2% rdg.+1d)

±(3% rdg.+5d) ±(3% rdg.+1d)

+10% rdg.+1d

Intrinsic

Uncertainty

±(2% rdg.+5d) ±(2% rdg.+1d)

±(1% rdg.+5d) ±(1% rdg.+1d)

±(2% rdg.+5d) ±(2% rdg.+1d)

+1% rdg.–1d ...

+9% rdg.+1d

fN = 50/60 Hz

= 25/50 V

ΔN

0 ... 25.0 V

0 ... 1000 ms

6 mA 10 mA 30 mA

100 mA 300 mA

500 mA

±(5% rdg.+1d) ±(3.5% rdg.+2d)

+10% rdg.+1d

±4 ms ±3 mst

+1% rdg.–1d ...

+9% rdg.+1 d

0 ... 40 ms

0.15 ... 0.49 Ω

0.50 ... 0.99 Ω

1.00 ... 9.99 Ω

0.25 ... 0.99 Ω

1.00 ... 9.99 Ω

120 (108 ... 132) V 230 (196 ... 253) V 400 (340 ... 440) V 500 (450 ... 550) V

10 ... 100 Ω

100 ... 1000 Ω

calcul. value depends

on UN and Z

/10...1000Ω

K=UN

0.15 Ω ... 0.49 Ω

0.50 Ω ... 0.99 Ω

1.0 Ω ...9.99 Ω 10 Ω ...99.9 Ω

100 Ω ...999 Ω 1 kΩ ...9.99 kΩ

0.25 ... 0.99 Ω

1.00 ... 9.99 Ω

0.25 ... 300 Ω

10 kΩ ... 199 kΩ

200 kΩ ... 30 MΩ

L-PE

400/500 V

fN=162/

fN =

fN = 50/60 Hz

= 120/230 V

/50/60Hz

= 120/230 V = 50/60 Hz

= 120/230 V

162/

50/

= 120/230 V

= 400 V

= 120/230 V = 50/60 Hz

see RE±

= 120/230 V = 50/60 Hz

U0 = U

L-N

±(10% rdg.+ 30d) ±(10% rdg.+ 30d)

±(5% rdg.+ 3d)

±(18% rdg.+30d)

±(10% rdg.+3d)

±(5% rdg.+30d) ±(4% rdg.+30d)

±(3% rdg.+3d)

±(6% rdg.+50d)

±(4% rdg.+3d)

calculated value from Z

(10% rdg.+10D)

(8% rdg.+2D)

calculated value from Z

±(10% rdg.+30d) ±(10% rdg.+30d)

±(5% rdg.+3d)

±(10% rdg.+3d) ±(10% rdg.+3d) ±(10% rdg.+3d)

(18% rdg.+ 30d)

±(10% rdg. + 3d)

= UN/Z

(2% rdg.+2D)

(1% rdg.+1D)

L-PE

(15 mA)

L-PE

±(5% rdg.+30d) ±(4% rdg.+30d)

±(3% rdg.+3d) ±(3% rdg.+3d) ±(3% rdg.+3d) ±(3% rdg.+3d)

±(6% rdg.+50D)

±(4% rdg.+3D)

(20% rdg.+ 20 d)±(15% rgd.+ 20 d)

(22% rdg.+20 d)±(15% rdg.+ 20 d)

±(20% rdg.+2d) ±(10% rdg.+2d)

±(10% rdg.+3d)

±(5% rdg.+3d)

L-PE

(15 mA):

Connections

Plug

2-Pole

3-Pole

Insert

Adapter

Probe

●●●

●

●●

●

●●

●

L-PE

optio

nal

●● ●

●●●●

Clamps

WZ12C Z3512A

●

MFLEX

P300

●

82 GMC-I Messtechnik GmbH

Func-

tion

INS

Measured

Quantity

. R

INS

E INS

Display Range

1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 49.9 MΩ 1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ 1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ

100 ... 200 MΩ

1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ

100 ... 500 MΩ

10 ... 999 V–

1.00 ... 1.19 kV

0.01 Ω ... 9.99 Ω

10.0 Ω ... 99.9 Ω

Reso-

Test Current Measuring Range Nominal Values

lution

1 kΩ

10 kΩ

100 kΩ

1 kΩ

10 kΩ

100 kΩ

1 kΩ

= 1.5 mA 50 kΩ ... 500 MΩ

10 kΩ

100 kΩ

1 MΩ

1 kΩ

10 kΩ

100 kΩ

1 MΩ

1 V

10 V

10 mΩ

100 mΩ

Im ≥ 200 mA

< 200 mA

Tra nsf orma -

tion

ratio

10 ... 1.19 kV ±(3% rdg.+1d)

0.1 Ω ... 5.99 Ω

6.0 Ω ... 100 Ω

0.0 ... 99.9 mA 0.1 mA 100 ... 999 mA 1 mA

1 V/A 5 ... 15 A

10.0 ... 15.0 A 0.1 A

1.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A

1 mV/A 5 ... 150 A

100 ... 150 A 1 A

0.0 ... 99.9 mA 0.1 mA 100 ... 999 mA 1 mA ±(7% rdg.+1 d) ±(5% rdg.+1 d)

1 V/A 5 ... 1000 mA

0.00 ... 9.99 A 0.01 A 100 mV/A 0.05 ... 10 A ±(3.4% rdg.+2 d) ±(3% rdg.+2 d)

SEN-

SOR

6 7

L/Amp

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(3.1% rdg.+2 d) ±(3% rdg.+2 d) 100 ... 999 A 1 A ±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

0.0 ... 99.9 mA 0.1 mA

100 ... 999 mA 1 mA

0.00 ... 9.99 A

0.01 A

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(5% rdg.+2 d)

10 mV/A 0.5 ... 100 A

1 mV/A 5 ... 1000 A

1 V/A 30 ... 1000 mA

100 mV/A 0.3 ... 10 A

10 mV/A 3 ... 100 A

10 mV/A 0.5 ... 100 A

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(5% rdg.+7 d)

1 mV/A 5 ... 1000 A

100 ... 999 A 1 A ±(5% rdg.+2 d)

U > 253 V, with 2 or 3-pole adapter only

/ 2

IN > 300 mA and 5

IN 5

300 mA only with UN = 230 V

The transformation ratio selected at the clamp (1 ... 1000 mV/A) must be set in the “Type” menu with the rotary switch in the “SENSOR” position.

at R

Eselektiv/REgesamt

the indicated measuring and int rinsic uncertainties already incl ude the uncertainties of the respective current clamp.

Measuring range of the signal input at the test instrument UE: 0 ... 1.0 V Vpeak) AC/DC

Input impedance of signal input at the test instrument: 800 kΩ

for fN < 45 Hz => UN < 253 V

IN > 500 mA and If > 300 mA only up to UN≤ 230 V !

< 100

(0 ... 1.4

eff

Measuring

Uncertainty

= 50 V

= 1 mA

= 100 V

= 1 mA

= 250 V

= 1 mA

= 500 V/

1000 V

= 1 mA

= 4.5 V ±(4% rdg.+2d) ±(2% rdg.+2d)

kΩ range

±(5% rdg.+10d)

MΩ range

±(5% rdg.+1d)

Uncertainty

±(3% rdg.+10d)

±(3% rdg.+1d)

(1.5% rdg.+1d)

±(13% rdg.+5d) ±(5% rdg.+4d)

±(13% rdg.+1d) ±(5% rdg.+1d)1.00 ... 9.99 A 0.01 A

= 50/60 Hz

±(11% rdg.+4d) ±(4% rdg.+3d)

±(11% rdg.+1d) ±(4% rdg.+1d)

±(7% rdg.+2 d) ±(5% rdg.+2 d)

16.7/50/60/ 200/400 Hz

±(3.1% rdg.+2 d) ±(3% rdg.+2 d)

±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

±(27% rdg.+100 d) ±(3% rdg.+100 d)

= 50/60 Hz

±(27% rdg.+11 d) ±(27% rdg.+12 d) ±(27% rdg.+11 d)

±(3% rdg.+11 d) ±(3% rdg.+12 d) ±(3% rdg.+11 d)

±(27% rdg.+100 d) ±(3% rdg.+100 d)

DC/16.7/50/60/

200 Hz

±(27% rdg.+11 d)

(5% rdg.+12 d)±(3% rdg.+12 d)

(5% rdg.+50 d) ±(3% rdg.+50 d)

±(3% rdg.+11 d)

±(3% rdg.+2 d)

±(3% rdg.+7 d) ±(3% rdg.+2 d)

Intrinsic

kΩ range

MΩ range

Plug

2-Pole

Insert

Adapter

●●

●

Connections

3-Pole

Adapter

Clamps

WZ12C Z3512A

I 15A

II 150A

1 A

10 A

100 A

1000A

MFLEX

P300

0.03 3

0.3 30

300

CP1100

100A

1000A

Key: D = digits, rdg. = measured value (reading)

GMC-I Messtechnik GmbH 83

Characteristic Values MPRO, MXTRA & SECULIFE IP

Func-

tion

Measured

Quantity

L-PE

N-PE

Probe

L-N

IΔN

Display Range

0 ... 99.9 V 0.1 V

100 ... 600 V 1 V ±(2% rdg. + 1 d) ±(1% rdg. + 1 d)

15.0 ... 99.9 Hz 100 ... 999 Hz

0 ... 99.9 V

100 ... 600 V

0 ... 99.9 V

100 ... 600 V

0 ... 99.9 V

100 ... 600 V

0 ... 70.0 V 0.1 V 0.3 · I

10 Ω ... 999 Ω

1.00 kΩ ... 6.51 kΩ 3 Ω ... 999 Ω

1 kΩ ... 2.17 kΩ

+ DC)

0.3 Ω ... 99.9 Ω 100 Ω ... 217 Ω

0.2 Ω ... 9.9 Ω 10 Ω ... 130 Ω

1.00 ... 9.99 Ω

10.0 ... 29.9 Ω

1.00 ... 9.99 kA

10.0 ... 50.0 kA

0.5 ... 99.9 Ω 100 ... 999 Ω

1Ω ... 651 Ω 1Ω

0 ... 999 mΩ

0 ... 9.9 A

10 ... 999 A

ΔN

IF (IΔN = 6 mA) 1.8 ... 7.8 mA

(IΔN = 10 mA) 3.0 ... 13.0 mA 3.0 ... 13.0 mA 3.0 ... 13.0 mA

(IΔN = 30 mA) 9.0 ... 39.0 mA 9.0 ... 39.0 mA 9.0 ... 39.0 mA

(IΔN = 100 mA) 30 ... 130 mA 1 mA 30 ... 130 mA 30 ... 130 mA

(IΔN = 300 mA) 90 ... 390 mA 1 mA 90 ... 390 mA 90 ... 390 mA

(IΔN = 500 mA) 150 ... 650 mA 1 mA 150 ... 650 mA 150 ... 650 mA

/ UL = 25 V 0 ... 25.0 V

IΔ

/ UL = 50 V 0 ... 50.0 V 0 ... 50.0 V

IΔ

(IΔN · 1) 0 ... 1000 ms 1 ms 6 ... 500 mA 0 ... 1000 ms

(IΔN · 5) 0 ... 40 ms 1 ms

()

L-P E

L-N

L-P E

+ DC

L-P E

(15 mA)

L-P E

L-N

0.10 ... 9.99 A

probe) + DC

Sel

Clamp

EXTRA

IK (15 mA)

(without

E.sl

probe)

(with probe)

E (15 mA)

(without/with probe)

(without

E.sl

(with probe)

E.sl

+ DC

E.sel

(only with probe)

E.sel

+ DC

(only with probe)

IMD test

10.0 ... 99.9 A

100 ... 999 A

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

1 kΩ ... 9.99 kΩ

0.5 ... 99.9 Ω 100 ... 999 Ω

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 29.9 Ω

0 ... 253 V 1 V 3.7 ... 4.7 A AC

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

0 ... 999 mΩ

1.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

0 to 30 MΩ 1 kΩ 2.3 mA at 230 V

20 ... 648 kΩ

2.51 MΩ

Resolution

0.1 Hz

0.01 kΩ

0,1 mA

0.01 Ω

0.01 A

14)

0.01 Ω

0.01 kΩ

0.01 Ω

0.01 MΩ

1 Hz

0.1 V 1 V

1 Ω

0.1 Ω 1 Ω

0.1 V Same as I

1 mΩ

0.1 Ω

0,1 A

1 A

10 A

100 A

0.1 Ω 1 Ω

0.1 A 1 A

1 mΩ

0.1 Ω 1 Ω

1 mΩ

0.1 Ω

1 mΩ

0.1 Ω

1 mΩ

0.1 Ω

1 kΩ

Input

Impedance /

Test Current

5 MΩ

ΔN

= 10 mA · 1.05

= 30 mA · 1.05

=100 mA · 1.05

=300 mA · 1.05

=500 mA · 1.05

1.8 ... 7.8 mA 1.8 ... 7.8 mA

2 · 6 ... 2 · 500 mA 5 · 6 ... 5 · 300 mA

3.7 ... 4.7 A AC

0.5/1.25 A DC

15 mA AC

3.7 ... 4.7 A AC

3.7 ... 4.7 A AC 400 mA AC

40 mA AC

4 mA AC

15 mA AC

3.7 ... 4.7 A AC

0.5/1.25 A DC

2.1 A AC

400 mA AC

40 mA AC

3.7 ... 4.7 A AC

0.5/1.25 A DC

IT line voltage

U.it = 90 ... 550 V

Measuring

Range

0.3 ... 600 V

DC 15.4 ... 420 Hz

0.3 ... 600 V

1.0 ... 600 V

5 ... 70 V

calculated value

= U

0 ... 25.0 V

0 ... 1000 ms

0 ... 40 ms

0.10 ... 0.49 Ω

0.50 ... 0.99 Ω

1.00 ... 9.99 Ω

0.25 ... 0.99 Ω

1.00 ... 9.99 Ω

120 (108 ... 132) V 230 (196 ... 253) V 400 (340 ... 440) V 500 (450 ... 550) V

10 ... 100 Ω

100 ... 1000 Ω

100 mA ... 12 A

200 mA ... 25 A

0.10 Ω ... 0.49 Ω

0.50 Ω ... 0.99 Ω

1.0 Ω ...9.99 Ω 10 Ω ...99.9 Ω

100 Ω ...999 Ω

1 kΩ ... 9.99 kΩ

10 Ω ...99.9 Ω

100 Ω ...999 Ω

0.25 ... 0.99 Ω

1.00 ... 9.99 Ω

RE = 0.10 ... 9.99

0.25 ... 300 Ω

0.25 ... 300 Ω R

E.tot

10 kΩ ... 199 kΩ

200 kΩ ... 30 MΩ

20 kΩ ... 199 kΩ

200 kΩ ... 648 kΩ

2.51 MΩ

Off

IΔN / IΔN

= 120 V)

= 230 V)

< 10 Ω

Nominal

= 162/3/50/

60/200/400 Hz

fN = 50/60 Hz

UN ≤ 230 V

= 120/230 V

400/500 V

fN =162/

= 120/230 V

= 50/60 Hz

= 120/230 V

= 162/

UN same as U

fN = 50/60 Hz

UN = 120/230 V

= 50/60 Hz

= 120/230 V

= 50/60 Hz

UN = 120/230 V

= 50/60 Hz

UN = 120/230 V

= 50/60 Hz

UN = 120/230 V

= 50/60 Hz

IT system nomi-

nal voltages

120/230/400/

= 50/60 Hz

Values

UN = 120 V 230 V 400 V 500 V

UN = 120 V 230 V 400 V

= 25/50 V

ΔN

6 mA

10 mA

30 mA 100 mA 300 mA

500 mA

/50/60 Hz

60 Hz

function

U0 = U

L-N

UN.it =

500 V

Measuring

Uncertainty

±(2% rdg.+5d) ±(1% rdg.+5d)

(0.2% rdg. + 1 d)

±(3% rdg.+5d)

±(3% rdg. + 1 d)

±(2% rdg.+5d)

±(2% rdg. + 1 d)

±(3% rdg.+5d)

±(3% rdg. + 1 d)

+10% rdg. + 1 d

±(5% rdg. + 1 d)

+10% rdg. + 1 d

±4 ms ±3 mstA (IΔN · 2) 0 ... 1000 ms 1 ms

(10% rdg.+20d)

±(5% rdg.+3d)

(18% rdg.+30d)

±(10% rdg.+3d)

Value calculated from Z

(10% rdg.+10d)

(8% rdg. + 2 d)

50/

Value calculated from I

= UN/Z

(10% rdg.+20d)

±(5% rdg.+3d) ±(10% rdg.+3d) ±(10% rdg.+3d) ±(10% rdg.+3d)

(10% rdg.+10d)

(8% rdg. + 2 d)

(18% rdg.+30d)

±(10% rdg.+3d)

Calculated U

(20% rdg.+20 d)±(15% rdg.+20 d)

(22% rdg.+20 d)±(15% rdg.+20 d)

±(20% rdg. + 2 d) ±(10% rdg. + 2 d)

±7%

±12%

±3%

Intrinsic

Uncertainty

±(0.1% rdg. + 1 d)

±(2% rdg.+5d)

±(2% rdg. + 1 d)

±(1% rdg.+5d) ±(1% rdg.+1d)

±(2% rdg.+5d)

±(2% rdg. + 1 d)

+1% rdg. –1d

+9% rdg. + 1 d

±(3.5% rdg. + 2

+1% rdg. –1d +9% rdg.+ 1d

±(5% rdg.+ ±(4% rdg.+

±(3% rdg.+3d)

±(6% rdg.+50d)

±(4% rdg.+3d)

L-P E

(2% rdg. + 2 d)

(1% rdg. + 1 d)

(15 mA)

L-P E

±(5% rdg.+ ±(4% rdg.+

±(3% rdg.+3d) ±(3% rdg.+3d) ±(3% rdg.+3d) ±(3% rdg.+3d)

±(2% rdg. + 2 d) ±(1% rdg. + 1 d)

±(6% rdg.+50d)

±(4% rdg.+3d)

= UN · RE/R

±(10% rdg.+3 d)

±(5% rdg.+3 d)

±5%

±10%

±2%

Plug

2-Pole

Insert

Adapter

●●●

●●

20d

)

20d

)

●

L-P E

20d

)

20d

)

●● ●

E.sl

●●●●

●●

Connections

3-Pole

Adapter

●

Option

Probe

●

Clamp

WZ12C Z3512A

●

MFLEX

P300

●

84 GMC-I Messtechnik GmbH

Func-

tion

INS

Measured

Quantity

, R

E ISO

INS

Display Range

1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 49.9 MΩ 1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ 1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ

100 ... 200 MΩ

1 ... 999 kΩ

1.00 ... 9.99 MΩ

10.0 ... 99.9 MΩ

100 ... 500 MΩ

10 ... 999 V–

1.00 ... 1.19 kV

0.01 Ω ... 9.99 Ω

10.0 Ω ... 199.9 Ω

Reso-

lution

1 kΩ

10 kΩ

100 kΩ

1 kΩ

10 kΩ

100 kΩ

1 kΩ

10 kΩ

100 kΩ

1 MΩ

1 kΩ

10 kΩ

100 kΩ

1 MΩ

1 V

10 V

10 mΩ

100 mΩ

Tes t Current

= 1.5 mA 50 kΩ ... 500 MΩ

Measuring

Range

10 ... 1.19 kV ±(3% rdg. + 1 d)

ratio

0.1 Ω ... 5.99 Ω

6.0 Ω ... 100 Ω

Im ≥ 200 mA

< 200 mA

Tra ns fo rma -

tion

0.0 ... 99.9 mA 0.1 mA 100 ... 999 mA 1 mA

1 V/A 5 ... 15 A

10.0 ... 15.0 A 0.1 A

1.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A 100 ... 150 A 1 A

0.0 ... 99.9 mA 0.1 mA 100 ... 999 mA 1 mA ±(7% rdg.+1 d) ±(5% rdg.+1 d)

1 mV/A 5 ... 150 A

1 V/A 5 ... 1000 mA

0.00 ... 9.99 A 0.01 A 100 mV/A 0.05 ... 10 A ±(3.4% rdg.+2 d) ±(3% rdg.+2 d)

0.00 ... 9.99 A 0.01 A

SEN-

SOR

6 7

L/Amp

10.0 ... 99.9 A 0.1 A ±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(3.1% rdg.+2 d) ±(3% rdg.+2 d) 100 ... 999 A 1 A ±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

0.0 ... 99.9 mA 0.1 mA 100 ... 999 mA 1 mA

0.00 ... 9.99 A

0.01 A

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(5% rdg.+2 d)

0.00 ... 9.99 A 0.01 A

10.0 ... 99.9 A 0.1 A ±(5% rdg.+7 d)

U > 230 V with 2 or 3-pole adapter only

/ 2

IN > 300 mA and 5

The transformation ratio selected at the clamp (1 ... 1000 mV/A) must be set in the “Type” menu with the rotary switch in the “SENSOR” position.

Where R

Eselective/REtotal

100 ... 999 A 1 A ±(5% rdg.+2 d)

IN > 500 mA and If > 300 mA only up to UN≤ 230 V !

< 100

10 mV/A 0.5 ... 100 A

1 mV/A 5 ... 1000 A

1 V/A 30 ... 1000 mA

100 mV/A 0.3 ... 10 A

10 mV/A 3 ... 100 A

10 mV/A 0.5 ... 100 A

1 mV/A 5 ... 1000 A

Nominal

Values

= 50 V

= 1 mA

= 100 V

= 1 mA

= 250 V

= 1 mA

= 500 V

= 1000 V

= 1 mA

= 4.5 V ±(4% rdg. + 2 d) ±(2% rdg. + 2 d)

Measuring

Uncertainty

kΩ range

±(5% rdg.+10D)

MΩ range

±(5% rdg. + 1 d)

Intrinsic

Uncertainty

kΩ

±(3% rdg.+10d)

MΩ

±(3% rdg. + 1 d)

(1.5% rdg. + 1 d)

range

Plug

Insert

●●

2-Pole

Adapter

●

Connections

3-Pole

Adapter

WZ12C Z3512A

±(13% rdg.+5d) ±(5% rdg.+4d)

I 15A

II 150A

= 50/60 Hz

±(13% rdg.+1d) ±(5% rdg.+1d)1.00 ... 9.99 A 0.01 A

±(11% rdg.+4d) ±(4% rdg.+3d)

±(11% rdg.+1d) ±(4% rdg.+1d)

±(7% rdg.+2 d) ±(5% rdg.+2 d)

16.7/50/60/200/ 400 Hz

±(3.1% rdg.+2 d) ±(3% rdg.+2 d)

±(3.1% rdg.+1 d) ±(3% rdg.+1 d)

±(27% rdg.+100 d) ±(3% rdg.+100 d)

= 50/60 Hz

±(27% rdg.+11 d) ±(27% rdg.+12 d) ±(27% rdg.+11 d)

±(3% rdg.+11 d) ±(3% rdg.+12 d)

±(3% rdg.+11 d) ±(27% rdg.+100 d) ±(3% rdg.+100 d) ±(27% rdg.+11 d)

DC/16.7/50/60/

200 Hz

6 7 8

(5% rdg.+12 d)±(3% rdg.+12 d)

(5% rdg.+50 d) ±(3% rdg.+50 d)

the indicated measuring and intrinsic uncertainties already include the uncertainties of the respective current clamp. Measuring range of the signal input at the test instrument UE: 0 ... 1.0 V Input impedance of signal input at the test instrument: 800 kΩ for fN < 45 Hz => UN < 253 V

±(3% rdg.+11 d)

±(3% rdg.+2 d)

±(3% rdg.+7 d) ±(3% rdg.+2 d)

(0 ... 1.4 Vpeak) AC/DC

eff

Clamp

1 A 10 A 100 A

1000A

MFLEX

P300

0.03 3

0.3 30

300

CP1100

100A

1000A

Special Function MPRO, MXTRA

Func-

Measured

tion

Quantity

RE, 3-pole

RE, 4-pole ±(10% rdg.+10d) ±(3% rdg.+5d)

RE, 4-pole

Selective

With clamp meter

BAT

Soil resistivity

(p)

Probe distance

d (p)

RE, 2 clamps

Signal frequency without interference signal

PRO-RE (Z501S) adapter cable for test plug, for connecting earth probes (E-Set 3/4)

PRO-RE/2 (Z502T) adapter cable for test plug, for connecting the generator clamp (E-CLIP2)

Generator clamp: E-CLIP2 (Z591B)

Clamp meter: Z3512A (Z225A)

Where RE.sel/RE < 10 or clamp current > 500 µA

Where RE.H/RE ≤ 100 and RE.E/RE ≤ 100

Display Range

0.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

1.00 ... 9.99 kΩ

10.0 ... 50.0 kΩ

0.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

1.00 ... 9.99 kΩ

10.0 ... 19.9 kΩ

10.0 ... 49.9 kΩ

0.0 ... 9.9 Ωm

100 ... 999 Ωm

1.00 ... 9.99 kΩm

0.1 ... 999 m

0.00 ... 9.99 Ω

10.0 ... 99.9 Ω 100 ... 999 Ω

1.00 ... 1.99 kΩ

15 16

Reso-

lution

0.01 Ω

0.1 Ω 1 Ω

0.01 kΩ

0.1 kΩ

0.01 Ω

0.1 Ω 1 Ω

0.01 kΩ

0.1 kΩ

0.1 Ωm 1 Ωm

0.01 kΩm

0.01 Ω

0.1 Ω

1 Ω

0.01 kΩ

Test Current/

Signal

Frequen

16 mA/128 Hz

1.6 mA/128 Hz

0.16 mA/128 Hz

16 mA/128 Hz 16 mA/128 Hz

1.6 mA/128 Hz

0.16 mA/128 Hz

0.16mA/128 Hz 16 mA/128 Hz

1.6 mA/128 Hz

0.16 mA/128 Hz

0.16mA/128 Hz

30 V / 128 Hz

Measuring Range

1.00 Ω ... 19.9 Ω

5.0 Ω ... 199 Ω

50 Ω ... 1.99 kΩ

0.50kΩ ... 19.9kΩ

0.50kΩ ... 49.9kΩ

1.00 Ω ... 9.99 Ω

10.0 Ω ... 200 Ω

100 Ωm ... 9.99 kΩm 500 Ωm ... 9.99 kΩm

5.00 kΩm ... 9.99 kΩm

0.10 ... 9.99 Ω

10.0 ... 99.9 Ω

Measuring

Uncertainty

±(10% v.M.+10D)

+ 1 Ω

±(15% rdg.+10d) ±(20% rdg.+10d)

12 12

±(20% rdg.+10d)11±

13 13 13

±(10% rdg.+5d) ±(20% rdg.+5d)

Where d = 20 m

Where d = 2 m

Where Z

Only where RANGE = 20 kΩ

Only where RANGE = 50 kΩ or AUTO

< 0.5 Ω, Ik > UN/0.5 Ω is indicated

L-PE

Intrinsic

Uncertainty

±(3% v.M.+5D)

+ 0,5 Ω

(10% rdg.+10d)

(15% rdg.+10d)

(12% rdg.+10d)

±(5% rdg.+5d)

±(12% rdg.+5d)

Adapter for Test Plug

PRO-RE PRO-RE/2 Z3512A Z591B

Connections

798

Key: D = digits, rdg. = measured value (reading)

Current Clamps

GMC-I Messtechnik GmbH 85

Characteristic Values PROFITEST MASTER & SECULIFE IP

BAT

Overload Capacity

Reference Conditions

Line voltage 230 V ± 0.1% Line frequency 50 Hz ± 0.1% Meas. quantity frequency 45 Hz … 65 Hz Measured qty. waveform Sine (deviation between effective

and rectified value ≤ 0.1%) Line impedance angle cos ϕ =1 Probe resistance ≤ 10 Ω Supply power 12 V ± 0.5 V Ambient temperature + 23 °C ± 2 K Relative humidity 40% … 60% Finger contact For testing potential difference

to ground potential Standing surface insulation

Purely ohmic

Nominal Ranges of Use

Voltage U

Frequency f

Overall voltage range U

Overall frequency range 15.4 ... 420 Hz Waveform Sine Temperature range 0 °C ... + 40 °C Supply voltage 8 ... 12 V Line impedance angle Corresponds to cos ϕ = 1 ... 0.95 Probe resistance < 50 kΩ

120 V (108 ... 132 V)

230 V (196 ... 253 V)

400 V (340 ... 440 V)

16 2/3Hz (15.4 ... 18 Hz)

50 Hz (49.5 ... 50.5 Hz)

60 Hz (59.4 ... 60.6 Hz)

200 Hz (190 ... 210 Hz)

400 Hz (380 ... 420 Hz)

65 ... 550 V

Power Supply

Rechargeable batteries 8 each AA 1.5 V,

we recommend eneloop type AA HR6,

2000 mAh (article no. Z502H) Number of measurements (standard setup with illumination) – For R

INS

– For R

Battery test Symbolic display of battery voltage

1 measurement – 25 s pause:

approx. 1100 measurements

Automatic polarity reversal / 1 Ω

(1 measuring cycle) – 25 s pause:

approx. 1000 measurements

INS

, U

L-P E

RCD, R Z

, Z

L-P E

L-N

, R

1200 V continuous 600 V continuous 440 V continuous 550 V (Limits the number of measure-

ments and pause duration. If overload occurs, the instrument is switched off by means of a thermostatic switch.)

Fine-wire fuse protection

Electronic protection prevents switching on if interference voltage is present.

FF 3.15 A 10 s, Fuses blow at > 5 A −

Electrical Safety

Protection class II per IEC 61 010-1/EN 61010-1/

VDE 0411-1 Nominal voltage 230/400 V (300/500 V) Test voltage 3.7 kV 50 Hz Measuring category CAT III 500 V or CAT IV 300 V Pollution degree 2 Fusing, L and N terminals

1 cartridge fuse-link ea.

FF 3.15/500G 6.3 x 32 mm

Electromagnetic Compatibility (EMC)

Product Standard EN 61326-1:2006

Interference emission

EN 55022 A

Interference immunity

EN 61000-4-2 Contact/atmos. –

EN 61000-4-3 10 V/m EN 61000-4-4 Mains conn. – 2 kV EN 61000-4-5 Mains conn. – 1 kV EN 61000-4-6 Mains conn. – 3 V EN 61000-4-11 0.5 period / 100 %

Test Va l u e F e a t u r e

4 kV/8 kV

Class

Ambient Conditions

Accuracy 0 to + 40 °C Operation –5 ... + 50 °C Storage –20 ... + 60 °C (without batteries) Relative humidity Max. 75 %, no condensation allowed Elevation Max. 2000 m

Battery saver circuit Display illumination can be switched off.

Mechanical Design

The test instrument is switched off automatically after the last key operation. The user can select the desired on-time.

Safety shutdown If supply voltage is too low, the instru-

ment is switched off, or cannot be switched on.

Recharging socket Installed rechargeable batteries can be

recharged directly by connecting a charger to the recharging socket: charger for Z502R

Charging time Approx. 2 hours *

Display Multiple display with dot matrix

128 x 128 pixels Dimensions W x L x D: 260 x 330 x 90 mm Weight approx. 2.7 kg with batteries Protection Housing: IP 40, test probe: IP 40 per

EN 60529/DIN VDE 0470, part 1 Excerpt from Table on the Meaning of IP Codes

IP XY

digit X)

Protection Against Foreign

Object Entry

4 ≥ 1.0 mm dia. 0 Not protected

IP XY

(2nd digit Y)

Protection Against

Penetration by Water

Data Interfaces

* Maximum charging time with fully depleted rechargeable batteries.

A timer in the charger limits charging time to no more than 4 hours.

86 GMC-I Messtechnik GmbH

Type USB slave for PC connection Type RS 232 for barcode and RFID scanners Typ e Bluetooth

for connection to a PC

(MTECH+, MXTRA & SECULIFE IP only)

20 Maintenance

Note

Attention!

BAT

Pb Cd Hg

20.1 Firmware Revision and Calibration Information

See section 4.6.

20.2 Rechargeable Battery Operation, and Charging

Check to make sure that no leakage has occurred at the rechargeable batteries at short, regular intervals, or after the instrument has been in storage for a lengthy period of time.

20.3 Fuses

If a fuse has blown due to overload, a corresponding message error appears at the display panel. The instrument’s voltage measuring ranges are nevertheless still functional.

Replacing the Fuse

Disconnect the device from the measuring circuit at all poles before opening the fuse compartment lid!

Prior to lengthy periods of rest (e. g. holiday), we recommend removing the rechargeable batteries. This helps to prevent excessive depletion or leakage of batteries, which, under unfavourable circumstances, may cause damage to the instrument.

If battery voltage has fallen below the allowable lower limit, the pictograph shown at the right appears. “Low Batt!!!” is also displayed along with a battery icon. The instrument does not function if the batteries have been depleted excessively, and no display appears.

Use only the charger Z502R to charge the Kompakt Akku- Pack Master (Z502H) which has already been inserted into the test instrument.

Make sure that the following conditions have been fulfilled before connecting the charger to the charging socket:

– Kompakt Akku-Pack Master (Z502H) has been

installed, no commercially available battery packs, no individual rechargeable batteries, no standard batteries

– The test instrument has been disconnected from the

measuring circuit at all poles

– The instrument must remain off during charging.

If the batteries or the battery pack (Z502H) have not been used or recharged for a lengthy period of time (> one month), thus resulting in excessive depletion:

Observe the charging sequence (indicated by LEDs at the charger) and initiate a second charging sequence if necessary (disconnect the charger from the mains and from the test instrument to this end, and then reconnect it). Please note that the system clock stops in this case and must be set to the correct time after the instrument has been restarted.

20.2.1 Charging Procedure with Charger for Z502R

➭ Insert the correct mains plug for your country into the charger.

Make sure that Kompakt Akku Pack Master (Z502H) has been inserted, no battery holder.

For charging in the tester, only use Kompakt Akku Pack Master (Z502H), which is either included in the standard equipment or available as an accessory, with heat-sealed battery cells.

➭ Connect the charger to the test instrument with the jack plug,

and then to the 230 V mains with the interchangeable plug. (The charger is suitable for mains operation only!)

Do not switch the test instrument on during charging. Monitoring of the charging process by the microprocessor might otherwise be disturbed, in which case the charging times specified in the technical data can no longer be assured.

➭ Loosen the slotted screws at the fuse compartment lid next to

the mains power cable with a screwdriver. The fuses are now accessible.

➭ Replacement fuses can be accessed after opening the battery

compartment lid.

Severe damage to the instrument may occur if incorrect fuses are used. Only original fuses from GMC-I Messtechnik GmbH may be used (order no. 3-578-285-01 / SIBA 7012540.3.15 SI-EINSATZ FF 3.15/500 6.3X32). Only original fuses assure required protection by means of suitable blowing characteristics. Short-circuiting of fuse terminals or the repair of fuses is prohibited, and is life endangering! The instrument may be damaged if fuses with incorrect ampere ratings, breaking capacities or blowing characteristics are used!

➭ Remove the defective fuse and insert a new one. ➭ Insert the fuse compartment lid after the fuse has been re-

placed and secure it by turning clockwise.

20.4 Housing

No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. In particular for the protective rubber surfaces, we recommend a moist, lint-free microfiber cloth. Avoid the use of cleansers, abrasives or solvents.

Return and Environmentally Sound Disposal

The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG (German electrical and electronic device law). This device is subject to the RoHS directive. Furthermore, we make reference to the fact that the current status in this regard can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term WEEE.

In accordance with WEEE 2012/19EU and ElektroG, we identify our electrical and electronic devices with the symbol in accordance with DIN EN 50419 which is shown at the right. Devices identified with this symbol may not be disposed of with the trash. Please contact our service department regarding the return of old devices (see address in section 22).

If the (rechargeable) batteries used in your instrument are depleted, they must be disposed of properly in accordance with valid national regulations. Batteries may contain pollutants and heavy metals such as lead (Pb), cadmium (Cd) and mercury (Hg).

The symbol to the right indicates that batteries must not be disposed of with the trash, and must be brought to a designated collection point.

➭ Please refer to the operating instructions included with the

charger regarding the meanings of LED displays during the charging process.

➭ Do not disconnect the charger from the test instrument until

the green LED (charged/ready) lights up.

GMC-I Messtechnik GmbH 87

21 Appendix

21.1 Tables for the determination of maximum or minimum display values under consideration of maximum measuring uncertainty:

Table 1

(full wave) / Z

L-P E.

(Ω)

Limit Valu e

0.10 0.07 0.10 0.05

0.15 0.11 0.15 0.10

0.20 0.16 0.20 0.14

0.25 0.20 0.25 0.18

0.30 0.25 0.30 0.22

0.35 0.30 0.35 0.27

0.40 0.34 0.40 0.31

0.45 0.39 0.45 0.35

0.50 0.43 0.50 0.39

0.60 0.51 0.60 0.48

0.70 0.60 0.70 0.56

0.80 0.70 0.80 0.65

0.90 0.79 0.90 0.73

1.00 0.88 1.00 0.82

1.50 1.40 1.50 1.33

2.00 1.87 2.00 1.79

2.50 2.35 2.50 2.24

3.00 2.82 3.00 2.70

3.50 3.30 3.50 3.15

4.00 3.78 4.00 3.60

4.50 4.25 4.50 4.06

5.00 4.73 5.00 4.51

6.00 5.68 6.00 5.42

7.00 6.63 7.00 6.33

8.00 7.59 8.00 7.24

9.00 8.54 9.00 8.15

9.99 9.48 9.99 9.05

Max. Dis-

play Value

L-N

(+/- half-wave)

L-P E.

Limit

Valu e

(Ω)

Max. Dis-

play Value

Table 3

MΩ

Limit Value

0.10 0.12 10.0 10.7

0.15 0.17 15.0 15.9

0.20 0.23 20.0 21.2

0.25 0.28 25.0 26.5

0.30 0.33 30.0 31.7

0.35 0.38 35.0 37.0

0.40 0.44 40.0 42.3

0.45 0.49 45.0 47.5

0.50 0.54 50.0 52.8

0.55 0.59 60.0 63.3

0.60 0.65 70.0 73.8

0.70 0.75 80.0 84.4

0.80 0.86 90.0 94.9

0.90 0.96 100 106

1.00 1.07 150 158

1.50 1.59 200 211

2.00 2.12 250 264

2.50 2.65 300 316

3.00 3.17

3.50 3.70

4.00 4.23

4.50 4.75

5.00 5.28

6.00 6.33

7.00 7.38

8.00 8.44

9.00 9.49

Min. Dis-

play Value

INS

Limit Value

Min. Dis-

play Value

Table 2

/ R

(Ω)

Limit

Value

Max. Display Value

0.10 0.07 10.0 9.49 1.00 k 906

0.15 0.11 15.0 13.6 1.50 k 1.36 k

0.20 0.16 20.0 18.1 2.00 k 1.81 k

0.25 0.20 25.0 22.7 2.50 k 2.27 k

0.30 0.25 30.0 27.2 3.00 k 2.72 k

0.35 0.30 35.0 31.7 3.50 k 3.17 k

0.40 0.34 40.0 36.3 4.00 k 3.63 k

0.45 0.39 45.0 40.8 4.50 k 4.08 k

0.50 0.43 50.0 45.4 5.00 k 4.54 k

0.60 0.51 60.0 54.5 6.00 k 5.45 k

0.70 0.60 70.0 63.6 7.00 k 6.36 k

0.80 0.70 80.0 72.7 8.00 k 7.27 k

0.90 0.79 90.0 81.7 9.00 k 8.17 k

1.00 0.88 100 90.8 9.99 k 9.08 k

1.50 1.40 150 133

2.00 1.87 200 179

2.50 2.35 250 224

3.00 2.82 300 270

3.50 3.30 350 315

4.00 3.78 400 360

4.50 4.25 450 406

5.00 4.73 500 451

6.00 5.68 600 542

7.00 6.63 700 633

8.00 7.59 800 724

9.00 8.54 900 815

Limit Value

ELoop

Max. Dis-

play Value

Limit

Value

Max. Dis-

play Value

Table 4

Limit Value

0.10 0.07 10.0 9.59

0.15 0.12 15.0 14.4

0.20 0.17 20.0 19.2

0.25 0.22 25.0 24.0

0.30 0.26 30.0 28.8

0.35 0.31 35.0 33.6

0.40 0.36 40.0 38.4

0.45 0.41 45.0 43.2

0.50 0.46 50.0 48.0

0.60 0.55 60.0 57.6

0.70 0.65 70.0 67.2

0.80 0.75 80.0 76.9

0.90 0.84 90.0 86.5

1.00 0.94 99.9 96.0

1.50 1.42

2.00 1.90

2.50 2.38

3.00 2.86

3.50 3.34

4.00 3.82

4.50 4.30

5.00 4.78

6.00 5.75

7.00 6.71

8.00 7.67

9.00 8.63

Max. Dis-

play Value

Limit Value

Max. Dis-

play Value

88 GMC-I Messtechnik GmbH

Table 5

ZST kΩ

Limit Value

10 14 15 19 20 25 25 30 30 36 35 42 40 47 45 53 50 58 56 65 60 69 70 80 80 92

90 103 100 114 150 169 200 253 250 315 300 378 350 440 400 503 450 565 500 628 600 753 700 878 800 >999

Min. Dis-

play Value

Table 6

Short-Circuit Current Minimum Display Values for the determination of nominal current for various fuses and breakers for systems with nominal voltage of U

Nominal

Current

[A]

Breaking Current I

Limit Value

[A]

2 9.2 10 16 17 10 11 20 21 40 42 24 25

314.11524251516303260643638 4192032342021404280854851 627284750303260641201287276

8373965694042808516017296102 10 47 50 82 87 50 53 100 106 200 216 120 128 13 56 59 98 104 65 69 130 139 260 297 156 167 16 65 69 107 114 80 85 160 172 320 369 192 207 20 85 90 145 155 100 106 200 216 400 467 240 273 25 110 117 180 194 125 134 250 285 500 578 300 345 32 150 161 265 303 160 172 320 369 640 750 384 447 35 173 186 295 339 175 188 350 405 700 825 420 492 40 190 205 310 357 200 216 400 467 800 953 480 553 50 260 297 460 529 250 285 500 578 1000 1.22 k 600 700 63 320 369 550 639 315 363 630 737 1260 1.58 k 756 896 80 440 517 960 1.16 k

100 580 675 1200 1.49 k 125 750 889 1440 1.84 k 160 930 1.12 k 1920 2.59 k

Low Resistance Fuses

per DIN VDE 0636 series of standards

Characteristic gL, gG, gM Characteristic B/E

5 s Breaking Current IA 0.4 s Breaking Current I

Min.

Display

[A]

Limit Value

[A]

Min.

Display

[A]

(formerly L)

5 x IN (< 0.2 s/0.4 s)

Limit Value

[A]

Min.

Display

[A]

Characteristic C

(formerly G, U)

Breaking Current I

10 x IN (< 0.2 s/0.4 s)

Limit Value

[A]

With Circuit Breaker and Line Switch

Characteristic D

Breaking Current I

20 x IN (< 0.2 s/0.4 s)

Min.

Display

Limit Value

[A]

= 230 V

Min.

Display

[A]

Characteristic K

Breaking Current I

12 x IN (< 0.1 s)

Limit Value

[A]

Min.

Display

[A]

Example

Display value 90.4 A → next smaller value for circuit breaker characteristic B from table: 85 A → protective device nominal current (I

) max. 16 A

GMC-I Messtechnik GmbH 89

21.2 At which values should/must an RCD actually be tripped?

Negative half-wave

Positive half-wave

Waveform:

Negative direct current

Positive direct current

Requirements for Residual Current Devices (RCDs)

General Requirements

• Tripping must occur no later than upon occurrence of rated residual current (nominal differential current IΔN).

and

• Maximum time to trip may not be exceeded.

Additional requirements due to influences on the tripping current range and the point in time of tripping which have to be taken into consideration:

• Residual current type or waveform: This results in a reliable tripping current range.

• Mains type and line voltage: This results in maximum tripping time.

• RCD variant (standard or selective): This results in maximum tripping time.

Definitions of Requirements in the Standards VDE 0100, part 600, which is included in all German standards col-

lections for electricians, applies to measurements in electrical systems. It plainly states: “The effectiveness of the protective measure is substantiated when shut-down occurs no later than upon occurrence of rated differential current I

ΔN

.”

Set residual current type or waveform at the test instrument:

It’s important to be able to select and take advantage of the corresponding settings at one’s own test instrument.

The situation is similar for breaking times. The new VDE 0100 part 410, should also be included in the standards collection. Depending upon mains type and line voltage, it specifies breaking times ranging from 0.1 to 5 seconds.

System

50 V < U0 ≤ 120 V

AC DC AC DC AC DC AC DC

0.8 s 0.4 s 5 s 0.2 s 0.4 s 0.1 s 0.1 s

0.3 s 0.2 s 0.4 s 0.07 s 0.2 s 0.04 s 0.1 s

120 V < U0 ≤ 230 V 230 V < U0 ≤ 400 V

U0 > 400 V

As a requirement for the measuring instrument manufacturer, DIN EN 61557-6 (VDE 0413, part 6) unmistakably specifies:

“The measuring instrument must be capable of substantiating the fact that the residual current which trips the residual current device (RCD) is less than or equal to rated residual current.”

Comment

For all electricians, this means that during scheduled protective measures testing after system modifications or additions to the system, as well as after repairs or during the E-check conducted after measurement of contact voltage, the trip test must be conducted no later than upon reaching a value of, depending upon the RCD, 10, 30, 100, 300 or 500 mA

How does the electrician react in the event that these values are exceeded? The RCD is replaced!

If it was relatively new, a complaint is submitted to the manufacturer. And in his laboratory he determines: The RCD complies with the manufacturer’s standard and is OK.

A look at the VDE 0664-10/-20/-100/-200 manufacturer’s standard shows us why:

Type of Residual Current Residual

Sinusoidal alternating current 0.5 ... 1 I

Pulsating direct current (positive or negative half-waves)

Phase angle controlled half-wave currents Phase angle of 90° el Phase angle of 135° el

Pulsating direct current superimposed with 6 mA smooth, direct residual current

Current Waveform

Allowable Tripping Current Range

ΔN

0.35 ... 1.4 I

0.25 ... 1.4 I

0.11 ... 1.4 I

Max. 1.4 I

ΔN

ΔN ΔN

+ 6 mA

RCDs usually interrupt more quickly, but in some cases they can take a bit longer. Once again, the ball is in the manufacturer’s court.

The following table is also included in VDE 0664:

Variant

Standard

(undelayed)

or briefly

delayed

Selective 0.13 ... 0.5 s 0.06 ... 0.2 s 0.05 ... 0.15 s 0.04 ... 0.15 s

Residual

Current

Typ e

Alternating

residual

current

Pulsating

direct residual

current

Smooth, direct

residual

current

Breaking Time at

1 x I

ΔN

1.4 x

2 x

ΔN

300 ms Max. 0.15 s Max. 0.04 s Max. 0.04 s

2 x I

2 x 1.4 x IΔN5 x 1.4 x I

ΔN

2 x 2 x I

ΔN

5 x I

5 x 2 x I

ΔN

500 A

Two limit values are highly conspicuous:

Standard Max. 0.3 s Selective Max. 0.5 s

All of the limit values are already included in good test instruments, or it’s possible to enter them directly and they’re displayed as well!

Select or set limit values at the test instrument:

Smooth direct current 0.5 ... 2 I

ΔN

Because the current waveform plays a significant role, the current waveform used by the test instrument is also important.

90 GMC-I Messtechnik GmbH

Tests for electrical systems include “visual inspection”, “testing” and “measurement”, and thus may only be conducted by experts with appropriate work experience.

Function Test

The machine is operated with nominal voltage and tested for correct functioning, in particular with regard to safety functions.

In the final analysis, the values from VDE 0664 are technically binding.

Special Tests

21.3 Testing Electrical Machines per DIN EN 60204 – Applications, Limit Values

The PROFITEST 204+ test instrument has been developed for the testing of electrical machines and controllers. After a revision to the standard in 2007, measurement of loop impedance is now additionally required. Measurement of loop impedance, as well as other measurements required for the testing of electrical machines, can be performed with test instruments from the PROFITEST MASTER series.

• Pulse control mode for troubleshooting (with PROFITEST 204HP/HV only)

• Protective conductor test with 10 A test current (with

PROFITEST 204+ only)

Limit Values per DIN EN 60204, Part 1

Measurement Parameter Cross-

Comparison of Tests Specified by the Standards

Tests per DIN EN 60204, part 1 (machines)

Uninterrupted connection of a protective conductor

Loop impedance Part 3: loop impedance ZL-PE Insulation resistance Part 2: insulation resistance RINS Voltage test

(test for absence of voltage)

Voltage measurement (protection against residual voltage)

Function test ——

Tests per DIN EN 61 557 (systems)

Meas. Function

Part 4: resistance of:

– Ground conductor – Protective conductor – Bonding conductor

——

Part 10: Combined measuring equipment (amongst others for voltage measurement) for testing, measuring or monitoring of protective measures

RLO

Protective conductor measurement

Insulation resistance measurement

Leakage current measurement

Voltage measurement

Uninterrupted Connection of a Protective Conductor

Uninterrupted connection of a protective conductor system is tested here be using an alternating current of 0.2 to 10 A with a line frequency of 50 Hz (= low-resistance measurement). Testing must be conducted between the PE terminal and various points within the protective conductor system.

Loop Impedance Measurement

Loop impedance Z ascertained in order to determine if the breaking requirements for protective devices have been fulfilled (see section 8).

is measured and short-circuit current IK is

L-P E

Insulation Resistance Measurement

All of the active conductors in the primary circuit are short-circuited at the machine (L and N, or L1, L2, L3 and N) and measured against PE (protective conductor). Controllers or machine components which are not laid out for these voltages (500 V DC) can be disconnected from the measuring circuit for the duration of the measurement. The measured value may not be any less than 1 MOhm. The test can be subdivided into separate segments.

Voltage test

Overvoltage Protection Device Characteristics for Limit Value Selection for Protective Conductor Testing

Breaking Time, Characteristics Available for Cross-Section

Fuse breaking time: 5 s All cross-sections Fuse breaking time: 0.4 s 1.5 through 16 sq. mm Circuit breaker, characteristic B

Ia = 5 x In – breaking time: 0.1s Circuit breaker, characteristic C

Ia = 10x In – breaking time: 0.1s Adjustable circuit breaker

Ia = 8 x In - break time: 0.1s

Voltage Tests (with PROFITEST 204HP/HV only)

The electrical equipment of the machine under test must withstand a test voltage of twice its own rated voltage value or 1000 V~ (whichever is largest) applied between the conductors of all circuits and the protective conductor system for a period of at least 1 second. The test voltage must have a frequency of 50 Hz, and must be generated by a transformer with a minimum power rating of 500 VA.

Voltage Measurement

Section

Test Dura tion 10 s Limit value for protective

conductor resistance based on phase conductor cross-section and characteristics of the overvoltage protection device (calculated value)

Nominal voltage 500 V DC Resistance limit value ≥ 1MΩ Leakage current 2.0 mA

Discharge time 5 s

Test duration 1 s Test voltage ≥ 1 kV

1.5 mm²

2.5 mm²

4.0 mm²

6.0 mm² 10 mm² 16 mm² 25 mm² L (16 mm² PE) 35 mm² L (16 mm² PE) 50 mm² L (25 mm² PE) 70 mm² L (35 mm² PE) 95 mm² L (50 mm² PE) 120 mm² L (70 mm² PE)

1.5 through 16 sq. mm

All cross-sections

Value

500 mΩ 500 mΩ 500 mΩ 400 mΩ 300 mΩ 200 mΩ 200 mΩ

100 mΩ

050 mΩ

or 2 U

Standard

GMC-I Messtechnik GmbH 91

21.4 Periodic Testing per DGUV provision 3 (previously BGV A3) – Limit Values for Electrical Systems and Operating Equipment

Limit Values per DIN VDE 0701-0702

Maximum Allowable Limit Values for Protective Conductor Resistance for Connector Cables with Lengths of up to 5 m

< 24 V

RINS

SC I:

3.5

1 mA/

kW *

SC II:

0.5

Housing – Mains Plug

0.3 Ω

+ 0.1 Ω

for each

additional 7.5 m

Test Standard Test Current

VDE 0701-0702:2008 > 200 mA 4 V < U

This value may not exceed 1 Ω for permanently connected data processing systems (DIN VDE 0701-0702).

Total protective conductor resistance of max. 1 Ω

Open-Circuit Voltage

Minimum Allowable Limit Values for Insulation Resistance

Te st Standard

VDE 07010702:2008

* With activated heating elements (if heating power > 3.5 kW and RINS < 0.3 MΩ:

leakage current measurement is required)

Te st Voltage

PC I PC II PC III Heating

500 V 1 MΩ 2MΩ 0.25 MΩ 0.3 MΩ *

Maximum Allowable Limit Values for Leakage Current in mA

Test Standard

VDE 0701-0702:2008

* For devices with heating power of greater than 3.5 kW Note 1: Devices which are not equipped with accessible parts that are

Note 2: Permanently connected devices with protective conductor Note 3: Portable x-ray devices with mineral insulation

connected to the protective conductor, and which comply with requirements for housing leakage current and, if applicable, patient leakage current, e.g. computer equipment with shielded power pack

SC I: 3.5

1 mA/kW *

ICI

0.5

Key

IBHousing leakage current (probe or contact current)

Residual current

Protective conductor current

Maximum Allowable Limit Values for Equivalent Leakage Current in mA

Test Standard I

VDE 0701-0702:2008

For devices with heating power ≥ 3.5 kW

SC I: 3.5

1 mA/kW

SC II: 0.5

92 GMC-I Messtechnik GmbH

21.5 List of Abbreviations and their Meanings

RCCBs (residual current devices / RCDs)

Tripping current

Nominal residual current

ΔN

Rising test current (residual current)

PRCD Portable residual current device

PRCD-S: with protective conductor detection and monitoring PRCD-K:

with undervoltage trigger and protective conductor monitoring

RCD- Selective RCCB

Calculated earthing or earth electrode loop resistance

SRCD Socket residual current device (permanently installed) t

Time to trip / breaking time

Contact voltage at moment of tripping

IΔ

Contact voltage

IΔN

relative to nominal residual current I

Contact voltage limit value

ΔN

Overcurrent Protective Devices

Calculated short-circuit current (at nominal voltage)

Line impedance

L-N

Loop impedance

L-PE

Earthing

Operational earth resistance

Measured earthing resistance

Earth electrode loop resistance

ELoop

Current

Breaking current

Leakage current (measured with current clamp trans-

former)

Measuring current

Nominal current

Test current

Voltage

f Line voltage frequency f

Nominal voltage rated frequency

ΔU Voltage drop as % U Voltage measured at the test probes during and after

insulation measurement R

Battery voltage

Batt

Earth electrode voltage

For measurement of R

INS

triggering or breakdown voltage Voltage between two phase conductors

L-L

Voltage between L and N

L-N

Voltage between L and PE

L-P E

Nominal line voltage

Highest measured voltage during determination of

phase sequence

Voltage between probe and PE

S-PE

Conductor voltage to earth

INS

: test voltage, for ramp function:

INS

Low-Value Resistance at Protective, Earthing and Bonding Conductors

Bonding conductor resistance (+ pole to PE)

LO+

Bonding conductor resistance (– pole to PE)

LO–

Insulation

Earth leakage resistance (DIN 51953)

E(ISO)

Insulation resistance

INS

Standing surface insulation resistance

Standing surface insulation impedance

GMC-I Messtechnik GmbH 93

21.6 Keyword Index

Abbreviations ..........................................................................93

Adjusting Brightness and Contrast ..........................................10

Batteries

Charge Level

Installation ..........................................................................7

Battery

...................................................................................7

Test

Bibliography ............................................................................95

Bluetooth Active Display ............................................................3

.....................................................................3

Contact Voltage ......................................................................19

Current Clamp Sensor

Measuring Range ..........................................35, 40, 41, 50

Data Backup .............................................................................7

DB MODE DB-MODE Default Settings (GOME SETTING)

...............................................................................11

..........................................10

Earth Electrode Loop Resistance ............................................34

Earth Electrode Voltage Earth Fault Detection Systems

Earth Leakage Resistance .......................................................46

Earthing Resistance Measurement

Overview

Electric charging stations ........................................................61

Electric vehicles ......................................................................61

..........................................................................31

...........................................................34

................................................56

Firmware Revision and Calibration Information ........................12

Firmware Update ....................................................................12

Fuse

Replacement

...................................................................87

Insulation Monitoring Devices ..................................................56

Interfaces

Configuring Bluetooth

USB, RS 232 Ports ............................................................2

Internet Addresses

......................................................11

..................................................................95

LCD Illumination

On-Time

Limit Values

DINEN 60204, Part 1 DINVDE0701-0702

Line Voltage (display of UL-N)

Line-to-Line Voltage ................................................................17

..........................................................................10

.......................................................91

..........................................................92

.................................................29

MASTER Updater ...................................................................12

Memory

Occupancy Display

MENNEKES test box ..............................................................61

............................................................3

Non-Tripping Test ...................................................................21

On-Time

Test Instrument ................................................................10

Parameter Lock ......................................................................14

Phase Sequence

Plausibility Check ....................................................................14

Polarity Reversal PRCD

Test Sequences for Report Generation of Fault Simulations on

.....................................................................17

.....................................................................15

PRCDs with PROFITEST PRCD Adapter ........... 62

PRCD-K ................................................................................. 22

PRCD-S

Profiles for Distributor Structures (PROFILES) ......................... 10

................................................................................. 23

RCD-S ................................................................................... 22

Residual voltage test

.............................................................. 58

SCHUKOMAT ........................................................................ 23

Select System Type (TN, TT, IT) .............................................. 25

short-circuit current

Short-circuit current Calculation .............................................. 28

SIDOS .................................................................................... 23

..................................................................................... 23

SRCD Standard

DIN EN 50178 (VDE 160) ................................................ 21

DIN EN 60 204

DIN VDE 0100 ...........................................................26, 32

DIN VDE 0100, Part 410 ................................................. 22

DIN VDE 0100, Part 600 DIN VDE 0100, Part 610 EN 1081 IEC 61851

NIV/NIN SEV 1000 ......................................................5, 34

ÖVE/ÖNORM E 8601 ...................................................... 24

ÖVE-EN 1

VDE 0413 ............................................................18, 26, 30

Standing Surface Insulation Impedance ............................ 51, 53

Switching Bluetooth On/Off

Symbol ..................................................................................... 6

................................................................ 29

................................................................ 91

................................................... 5

...........................................20, 27

.......................................................................... 46

....................................................................... 61

......................................................................... 5

.................................................... 11

Test sequences ...................................................................... 64

Testing

BGVA3 ............................................................................ 92

Electrical Machines

Type G RCCB ........................................................................ 24

.......................................................... 91

User Interface Language (CULTURE) ...................................... 10

Voltage Drop as % (ZL-N function) .......................................... 52

warranty seal ............................................................................ 7

94 GMC-I Messtechnik GmbH

21.7 Bibliography

Statutory Source Documents

German occupational safety legislation (BetrSichV) Regulations issued by the accident insurance carriers

Title Information

Betriebs Sicherheits Verordnung (BetrSichV)

Elektrische Anlagen und Betriebsmittel

VDE Standards

German standard Title Date of

DIN VDE 0100-410

DIN VDE 0100-530

DIN VDE 0100-600

Series of standards DIN EN 61557

DIN VDE 0105-100

VDE 0122-1 DIN EN 61851-1

Rule / Regulation

BetrSichV

DGUV provision 3 (up to now BGV A3)

Protection against electric shock

Erection of low-voltage installations Part 530: Selection and erection of electrical equipment - Switchgear and controlgear

Erection of low-voltage installations Part 6: Tests

Devices for testing, measuring or monitoring protective measures

Operation of electrical installations, part 100: General requirements

Electric vehicle conductive charging system - Part 1: General requirements (IEC 69/219/CD:2012)

Publisher Issue /

DGUV (up to now HVBG)

Issue

2007-06 Beuth-Verlag

2011-06 Beuth-Verlag

2008-06 Beuth-Verlag

2006-08 Beuth-Verlag

2009-10 Beuth-Verlag

2013-04 Beuth-Verlag

Order No.

2005

Publisher

GmbH

21.7.1 Internet Addresses for Additional Information

Internet Address

www.dguv.de GUV information, rules and regulations

from Deutsche Gesetzliche Unfallversicherung e.V.

www.beuth.de VDE regulations, DIN standards, VDI directives from

Beuth-Verlag GmbH

www.bgetf.de BG information, rules and regulations from gewerbli-

che Berufsgenossenschaften e.g. BG ETEM (trade association for energy, textiles, electrical, Medienerzeugnisse)

GMC-I Messtechnik GmbH 95

22 Repair and Replacement Parts Service

Calibration Center* and Rental Instrument Service

If required please contact:

GMC-I Service GmbH Service-Center Thomas-Mann-Strasse 16-20 90471 Nürnberg, Germany Phone: +49 911 817718-0 Fax: +49 911 817718-253 E-mail service@gossenmetrawatt.com www.gmci-service.com

This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.

* DAkkS Calibration Laboratory for Electrical Quantities

D-K-15080-01-01

Accredited quantities: direct voltage, direct current value, direct current resis-

tance, alternating voltage, alternating current value, AC active power, AC apparent power, DC power, capacitance, frequency and temperature

Competent Partner

GMC-I Messtechnik GmbH is certified in accordance with DINENISO9001.

Our DAkkS calibration laboratory is accredited by the Deutsche Akkreditierungsstelle GmbH (German accreditation body) under registration number D-K-15080-01-01 in accordance with DIN EN ISO/IEC 17025.

We offer a complete range of expertise in the field of metrology: from test reports and proprietary calibration certificates right on up to DAkkS calibration certificates.

Our spectrum of offerings is rounded out with free test equipment management.

An on-site DAkkS calibration station is an integral part of our service department. If errors are discovered during calibration, our specialized personnel are capable of completing repairs using original replacement parts.

As a full service calibration laboratory, we can calibrate instruments from other manufacturers as well.

accredited per DIN EN ISO/IEC 17025

23 Recalibration

The measuring tasks performed with your instrument, and the stressing it’s subjected to, influence aging of its components and may result in deviation from the specified levels of accuracy.

In the case of strict measuring accuracy requirements, as well as in the event of use at construction sites with frequent stress due to transport and considerable temperature fluctuation, we recommend a relatively short calibration interval of once per year. If your instrument is used primarily in the laboratory and indoors without considerable climatic or mechanical stressing, a calibration interval of once every 2 to 3 years is sufficient as a rule.

During recalibration at an accredited calibration laboratory (DIN EN ISO/IEC 17025), deviations from traceable standards demonstrated by your measuring instrument are documented. Ascertained deviations are used to correct displayed values during later use of the instrument.

We would be happy to perform DAkkS or factory calibration for you at our calibration laboratory. Further information is available at our website:

www.gossenmetrawatt.com (→ Company → DAkkS Calibration Center or → FAQs → Questions and Answers Regarding Calibration).

Recalibration of your instrument at regular intervals is essential for the fulfillment of requirements according to quality management systems per DIN EN ISO 9001.

* Examination of the specification, as well as adjustment, are not included in calibra-

tion. However, in the case of our own products, any required adjustment is performed and adherence to the specification is confirmed.

24 Product Support

If required please contact:

GMC-I Messtechnik GmbH

Product Support Hotline

Phone: +49-911 8602-0 Fax: +49 911 8602-709 E-mail: support@gossenmetrawatt.com

Edited in Germany • Subject to change without notice • PDF version available on the Internet

GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg

• Germany

Phone:+49 911 8602-111 Fax: +49 911 8602-777 e-mail: info@gossenmetrawatt.com www.gossenmetrawatt.com

Gossen Metrawatt M520P, PROFITEST MBASE, PROFITEST MTECH, PROFITEST MPRO, PROFITEST MXTRA User guide

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Scope of delivery

2 Applications

2.1 Using Cable Sets and Test Probes

3 Safety Features and Precautions

4 Initial Start-Up

4.1 Preparation for use

4.3 Switching the Instrument On/Off

4.4 Battery Test

4.5 Charging the Battery Pack in the Tester

4.2 Installing or Replacing the Battery Pack

4.6 Device Settings

5 General Notes

5.1 Connecting the Instrument

5.2 Automatic Settings, Monitoring and Shut-Off

5.3 Measurement Value Display and Memory

5.4 Testing Earthing Contact Sockets for Correct Connection

5.5 Help Function

5.6 Setting Parameters or Limit Values using RCD Measurement as an Example

5.7 Freely Selectable Parameter Settings or Limit Values

5.8 2-Pole Measurement with Fast or Semiautomatic Polarity Reversal

6 Measuring Voltage and Frequency

6.1 Single-Phase Measurement

6.1.2 Voltage between L – PE, N – PE and L – L with 2-Pole Adapter Connection

7 Testing RCDs

7.2 Special Testing for Systems and RCCBs

7.2.2 Testing Systems and RCCBs with Rising Residual Current (AC) for Type B/B+ and EV/MI RCDs (nur MTECH+, MXTRA & SECULIFE IP)

7.2.4 Testing of RCCBs which are Suited for Pulsating DC Residual Current

7.3 Testing for Special RCDs

7.3.1 System, Type RCD-S Selective RCCBs

7.3.2 PRCDs with Non-Linear Type PRCD-K Elements

7.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or comparable)

7.3.4 Type G or R RCCB

7.4 Testing Residual Current Circuit Breakers in TN-S Systems

7.5 Testing of RCD Protection in IT Systems with High Cable Capacitance (e.g. in Norway)

8.1 Measurements with Suppression of RCD Tripping

8.2 Evaluation of Measured Values

10 Earthing Resistance Measurement (RE function)

10.1 Earthing Resistance Measurement – Mains Operated

10.2 Earthing Resistance Measurement – Battery Powered (only MPRO & MXTRA)

Earthing Resistance, Mains Powered – 2-Pole Measurement with 2-Pole Adapter or Country-Specific Plug (Schuko) without Probe

10.4 Earthing Resistance Measurement, Mains Powered – 3-Pole Measurement: 2-Pole Adapter with Probe

10.5 Earthing Resistance Measurement, Mains Powered – Measurement of Earth Electrode Voltage (UE function)

10.7 Earthing Resistance Measurement, Battery Operated – 3-Pole (only MPRO & MXTRA)

10.8 Earthing Resistance Measurement, Battery Operated – 4-Pole (only MPRO & MXTRA)

11 Measuring Insulation Resistance

11.1 General

12.1 Measurements with Constant Test Current

13 Measurement with Accessory Sensors

13.1 Current Measurement with Current Clamp Sensor

14 Special Functions – EXTRA Switch Position

14.6 Residual Voltage Test – Ures Function (PROFITEST MXTRA only)

14.7.1 Applications

14.10.2 Parameter Settings

14.10.1 Selecting the PRCD under Test

14.10.3 Test Sequence PRCD-S (single phase) – 11 Test Steps

14.10.4 Test Sequence PRCD-S (three-phase) – 18 Test Steps

15 Automatic Test Sequences – AUTO Function

16 Database

16.1 Creating Distributor Structures, General

16.2 Transferring Distributor Structures

16.3 Creating a Distributor Structure in the Test Instrument

16.3.1 Creating Structures (example for electrical circuit)

16.3.2 Searching for Structural Elements

16.4 Saving Data and Generating Reports

16.4.1 Use of Barcode Scanners and RFID Readers

17 Operating and Display Elements

18 LED Indications, Mains Connections and Potential Differences

19 Characteristic Values

20 Maintenance

20.1 Firmware Revision and Calibration Information

20.2 Rechargeable Battery Operation, and Charging

20.3 Fuses

20.2.1 Charging Procedure with Charger for Z502R

20.4 Housing

21 Appendix

21.1 Tables for the determination of maximum or minimum display values under consideration of maximum measuring uncertainty: