GOSSEN PROFITEST MXTRA User Manual

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Page 1

Operating Instructions

PROFITEST MASTER Series PROFITEST M

TECH+, MPRO, MXTRA, MBASE+

IEC 60364-6, EN 50110-1

3-447-149-03

1/4.23

Page 2

Table of Contents Page Page

1 Safety Instructions .............................................................. 4

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

2.1 Intended Use / Use for Intended Purpose ............5

2.2 Use for Other than Intended Purpose...................5

2.3 Liability and Guarantee.........................................5

2.4 Opening the Instrument / Repairs.........................5

2.5 Scope of Functions ..............................................5

3 Documentation.................................................................... 6

4 Getting Started .................................................................... 6

5 The Instrument.................................................................... 7

5.1 Scope of Delivery .................................................7

5.2 Optional Accessories (excerpt) .............................7

5.3 Meanings of Symbols on the Instrument...............7

5.4 Instrument Overview ............................................8

5.5 Technical Data ...................................................10

5.6 Characteristic Values for PROFITEST MTECH+

and PROFITEST MBASE+..................................11

5.7 Characteristic Values for PROFITEST MXTRA

and PROFITEST MPRO .....................................13

6 Operating and Display Elements ....................................... 16

6.1 Control Panel .....................................................16

6.2 Display...............................................................16

6.3 LEDs..................................................................16

6.4 LED Indications, Mains Connections and

Potential Differences ..........................................17

7 Operation........................................................................... 26

7.1 Power Supply ....................................................26

7.1.1 Inserting or Replacing the Battery Pack (Z502H) or Commercially Available Individual

(Rechargeable) Batteries ..............................26

7.1.2 Charging the Battery Pack (Z502H) in the

Tester ..........................................................26

7.2 Switching the Instrument On/Off ........................26

8 Instrument Settings........................................................... 27

9 Database ........................................................................... 31

9.1 Creating Distributor Structures, General .............31

9.2 Transferring Distributor Structures ......................31

9.3 Creating a Distributor Structure in the Test

Instrument..........................................................31

9.3.1 Creating Structures (example for electrical

circuit)..........................................................33

9.3.2 Searching for Structure Elements.................34

9.4 Saving Data and Generating Reports .................34

9.5 Use of Barcode Scanners and RFID Readers.....35

10 General Information on Measurements............................. 36

10.1 Using Cable Sets and Test Probes.....................36

10.2 Test Plug – Changing Inserts..............................36

10.3 Connecting the Instrument .................................36

10.4 Automatic Settings, Monitoring and Shutdown...36

10.5 Measured Value Display and Memory ................36

10.6 Help Function.....................................................37

10.7 Setting Parameters or Limit Values using RCD

Measurement as an Example .............................38

10.8 Freely Selectable Parameter Settings or Limit

Values ............................................................... 39

10.8.1 Changing Existing Parameters .................... 39

10.8.2 Adding New Parameters ............................. 39

10.9 2-Pole Measurement with Rapid or

Semiautomatic Polarity Reversal........................ 40

11 Measuring Voltage and Frequency.................................... 41

11.1 Single-Phase Measurement............................... 41

11.1.1 Voltage Between L and N (U (U

) a

L-PE

nd N and PE

N-PE

L and PE

L-N

) with Country-

Specific Plug Insert, e.g. SCHUKO.............. 41

11.1.2 Voltage Between L – PE, N – PE and L – L

with 2-Pole Adapter Connection ................. 41

11.2 3-Phase Measurement (line-to-line voltage) and

Phase Sequence............................................... 41

Testing RCDs .......................................................................... 43

12.1 Measuring Touch Voltage (with reference to nominal residual current) with ⅓ Nominal Residual Current and Tripping Test with Nominal Residual

Current.............................................................. 44

12.2

Special Tests for Systems and RCDs.....................46

12.2.1 Testing Systems and RCCBs with Rising Residual Current (AC) for Type AC, A/F, B/B+ and EV/MI RCDs (PROFITEST MTECH+,

PROFITEST MXTRA only)............................ 46

12.2.2 Testing Systems and RCCBs with Rising Residual Current (AC) for Type B/B+ and EV/MI RCDs (PROFITEST MTECH+PROFITEST

MXTRA) ...................................................... 47

12.2.3 Testing RCCBS with 5 × I

....................... 47

12.2.4 Testing of RCCBs which are Suitable for

Pulsating DC Residual Current .................... 48

12.3 Testing of Special RCDs.................................... 48

12.3.1 Systems with Type RCD-S Selective

RCCBs ....................................................... 48

12.3.2 PRCDs with Non-Linear Type PRCD-K

Elements..................................................... 49

12.3.3 SRCD, PRCD-S (SCHUKOMAT, SIDOS or

comparable)................................................ 50

12.3.4 Type G or R RCCB ..................................... 50

12.4 Testing Residual Current Circuit Breakers in TN-S

Systems............................................................ 51

12.5 Testing of RCD Protection in IT Systems with High

Cable Capacitance (e.g. In Norway)................... 52

12.6 Testing of 6 mA Residual Current Devices RDCDD/RCMB (RDC-DD: PROFITEST MXTRA and

PROFITEST MTECH+ only) ............................... 52

13 Testing of Breaking Requirements for Overcurrent Protective

Devices, Measurement of Loop Impedance and Determination of Short-Circuit Current (ZL-PE and I

Functions)..... 54

13.1 Measurements with Suppression of RCD Tripping (PROFITEST MTECH+, PROFITEST

MXTRA only) ..................................................... 54

13.1.1 Measurement with Positive Half-Waves (PROFITEST MTECH+, PROFITEST MXTRA

only)............................................................ 55

13.2 Evaluation of Measured Values.......................... 55

2 Gossen Metrawatt GmbH

Page 3

13.3 Settings for Calculating Short-Circuit Current – Parameter I

14 Measuring Supply Impedance (Z 15 Earthing Resistance Measurement (Function R

.................................................56

Function)...................57

L-N

).............. 59

15.1 Earthing Resistance Measurement –

Mains Powered..................................................60

15.2 Earthing Resistance Measurement – Battery Powered, “Battery Mode” (PROFITEST MPRO & PROF-

ITEST MXTRA only)............................................60

15.3

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

................................61

15.4 Earthing Resistance Measurement. Mains Powered – 3-Pole Measurement: 2-Pole Adapter

with Probe .........................................................62

15.5 Earthing Resistance Measurement, Mains Powered – Measuring Earth Electrode Potential (U

Function) .....................................................63

15.6 Earthing Resistance Measurement, Mains Powered – Selective Earthing Resistance Measurement

with Current Clamp Sensor as Accessory ..........64

15.7 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 3-Pole (PROFITEST

MPRO & PROFITEST MXTRA only) ....................66

15.8

Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 4-Pole ( MPRO

PROFITEST MXTRA

PROFITEST

only) ..................... 67

15.9 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Selective (4-pole) with Current Clamp Sensor and PRO-RE Measuring Adapter as Accessory (PROFITEST MPRO &

PROFITEST MXTRA only)...................................69

15.10Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Ground Loop Measurement (with current clamp sensor and transformer, and pro-re measuring adapter as accessory) (PROFIT-

EST MPRO & PROFITEST MXTRA only).............70

15.11Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Measurement of Soil Resistivity 

(PROFITEST MPRO & PROFITEST

MXTRAonly) .......................................................71

Measurement of Insulation Resistance...................................73

16.1 General..............................................................73

16.2 Special Case: Earth Leakage Resistance (R

Measuring Low-Value Resistance of up to 200 (Protective

EISO

)75

Conductor and Equipotential Bonding Conductor) ..................77

17.1 Measurement with Constant Test Current..........78

17.2 Protective Conductor Resistance Measurement with Ramp Sequence – Measurement at PRCDs with Current-Monitored Protective Conductor using the PROFITEST PRCD Test Adapter as an

Accessory ( PROFITEST MXTRAonly).................79

18 Measurement with Accessory Sensors..............................80

18.1 Current Measurement with Current Clamp

Sensor...............................................................80

19 Special Functions – EXTRA Switch Position ......................81

19.1 Voltage Drop Measurement (at Z

LN) –

U Function .......................................................82

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

Function ......................................................83

19.3 Testing Meter Startup with Earthing Contact Plug

– kWh Function .................................................84

19.4 Leakage Current Measurement with PRO-AB Leakage Current Adapter as Accessory – I

Function (PROFITEST MXTRA only) ................85

19.5

Testing Insulation Monitoring Devices – IMD Function

(PROFITEST MXTRA only)..................................86

19.6 Residual Voltage Test – U

Function

res

(PROFITEST MXTRA only)..................................88

19.7

Intelligent Ramp – ta+ID (

PROFITEST MXTRA

Function

only).................................... 89

19.8 Testing Residual Current Monitors

– RCM Function ( PROFITEST MXTRA only).......90

19.9 Checking the Operating Statuses of Electric Vehicles at Charging Stations per IEC 61851 ((PROFITEST MTECH+ & PROFITEST MXTRA) ..91

19.10PRCD – Test Sequences for Documenting Fault Simulations at PRCDs with the PROFITEST PRCD

Adapter (PROFITEST MXTRA only).....................92

19.10.1Fault Simulation ...........................................92

20 Test Sequences (Automatic Test Sequences)

– AUTO Function ................................................................95

20.1 General (test sequence layouts)..........................95

20.2 Creation of Test Sequences with ETC ................95

20.3 Using Test Sequences .......................................96

21 Maintenance ......................................................................97

21.1 Test Instrument Firmware/Software....................97

21.1.1 Rechargeable Battery Care ..........................97

21.2 Fuse Replacement .............................................97

21.3 Housing .............................................................97

21.4 Calibration..........................................................97

22 Contact, Support and Service ............................................98

23 CE Declaration ...................................................................98

24 Disposal and Environmental Protection .............................99

25 Appendix ..........................................................................100

25.1 Tables for Determining Maximum and Minimum Display Values in Consideration of the Instrument’s Maximum Measuring and Intrinsic

Uncertainties....................................................100

25.2 At which values should/must an RCD actually be tripped? Requirements for Residual Current

Devices (RCD)..................................................102

25.3 Testing Electrical Machines per DIN EN 60204 –

Applications, Limit Values.................................103

25.4 Periodic Testing per DGUV V 3 (previously BGV A3) – Limit Values for Electrical Systems and Operating

Equipment .......................................................103

25.5 Bibliography.....................................................104

25.6 Internet Addresses for Additional Information ..104

Gossen Metrawatt GmbH 3

Page 4

1 Safety Instructions

Observe this documentation, in particular all included safety information, in order to protect yourself and others from injury, and to prevent damage to the instrument.

The operating instructions and the condensed operating instructions should be made available to all users.

General

• Tests/measurements may only be performed by a qualified electrician, or under the supervision and direction of a qualified electrician. The user must be instructed by a qualified electrician concerning performance and evaluation of tests and/or measurements.

• Observe the five safety rules in accordance with DIN VDE 0105-100:2015-10, VDE 0105-100:2015-10 (EN 50110-1), Operation of electrical installations – Part 100: General requirements (1: Shut down entirely. 2: Secure against restart. 3: Assure absence of voltage at all poles. 4: Ground and short circuit. 5: Cover neighboring live components, or make them inaccessible).

• Observe and comply with all safety regulations which are applicable for your work environment.

• Wear suitable and appropriate personal protective equipment (PPE) whenever working with the instrument.

• The functioning of active medical devices (e.g. pacemakers, defibrillators) and passive medical devices may be affected by voltages, currents and electromagnetic fields generated by the tester and the health of their users may be impaired. Implement corresponding protective measures in consultation with the manufacturer of the medical device and your physician. If any potential risk cannot be ruled out, do not use the instrument.

Accessories

• Use only the specified accessories (included in the scope of delivery or listed as options) with the instrument.

• Carefully and completely read and adhere to the product documentation for optional accessories. Retain these documents for future reference.

Handling

• Use the instrument in undamaged condition only. Inspect the instrument before use. Pay particular attention to damage, interrupted insulation or kinked cables. Damaged components must be replaced immediately.

• Accessories and cables may only be used as long as they’re fully intact. Inspect accessories and all cables before use. Pay particular attention to damage, interrupted insulation or kinked cables.

• If the instrument or its accessories don’t function flawlessly, permanently remove the instrument/accessories from operation and secure them against inadvertent use.

• If the instrument or accessories are damaged during use, for example if they’re dropped, permanently remove the instrument/accessories from operation and secure them against inadvertent use.

• The instrument and the accessories may only be used for the tests/measurements described in the documentation for the instrument.

• Neither the integrated voltage measuring function nor the mains connection test may be used to test systems or system components for the absence of voltage. Testing for the absence of voltage is only permissible with a suitable voltage tester or voltage measuring system which fulfills the requirements specified in DIN EN 61243.

Operating Conditions

• Do not use the instrument and its accessories after long periods of storage under unfavorable conditions (e.g. humidity, dust or extreme temperature).

• Do not use the instrument and its accessories after extraordinary stressing due to transport.

• The instrument must not be exposed to direct sunlight.

• Only use the instrument and its accessories within the limits of the specified technical data and conditions (ambient conditions, IP protection code, measuring category etc.).

• Do not use the instrument in potentially explosive atmospheres.

Rechargeable Batteries

• When using the charger, only the battery pack (Z502H) may be inserted in the device.

• Do not use the instrument while charging the battery pack (Z502H).

• Do not use the test instrument if the battery compartment lid has been removed. Touch contact with dangerous voltage is otherwise possible.

• The battery pack (Z502H) may only be charged in undamaged condition. Inspect the battery pack (Z502H) before use. Pay particular attention to leaky and damaged batteries.

Fuses

• The instrument is equipped with fuses. The instrument may only be used as long as the fuses are in flawless condition. Defective fuses must be replaced. See detailed operating instructions.

Measurement Cables and Establishing Contact

• Plugging in the measurement cables must not necessitate any undue force.

• Never touch conductive ends (e.g. of test probes).

• Fully unroll all measurement cables before starting a test/measurement. Never perform a test/measurement with the measurement cable rolled up.

• Avoid short circuits due to incorrectly connected measurement cables.

• Ensure that alligator clips, test probes or Kelvin probes make good contact.

Data Security

• Always create a backup copy of your measurement data.

• Observe and comply with the respectively applicable national data protection regulations. Use the corresponding functions provided by the test instrument such as access protection, as well as other appropriate measures.

4 Gossen Metrawatt GmbH

Page 5

2 Applications

Please read this important information!

2.1 Intended Use / Use for Intended Purpose

Measuring and test instruments from the PROFITEST MASTER series include:

• PROFITEST MBASE+ (M520S)

• PROFITEST MXTRA (M522P)

• PROFITEST MTECH+ (M522R)

• PROFITEST MPRO (M520N) The test instruments are used to test the effectiveness of protec-

tive measures at stationary electrical systems in accordance with IEC 60364-6, EN 50110-1 and other country-specific standards. They can also be used for the testing of electric charging stations per EN 61851-1 (DIN VDE 0122-1), and for earth measurements. The test instruments include pre-programmed test sequences for increased working convenience and user-defined test sequences can also be programmed as an option.

The test instruments are especially well suited for testing electrical systems during setup, initial startup, periodic testing and troubleshooting.

The applications range of the test instruments covers all alternating and 3-phase current systems with nominal voltages of 230/ 400 V (300/500 V) and nominal frequencies of 16⅔, 50, 60, 200 and 400 Hz.

A system structure is set up in the test instrument and measured values are assigned to the objects. Completed tests and measured values can be saved and documented in a measurement and test report.

Safety of the operator, as well as that of the test instrument, is only assured when it’s used for its intended purpose.

2.2 Use for Other than Intended Purpose

Using the test instrument for any purposes other than those described in these operating instructions, or in the test instrument’s condensed operating instructions, is contrary to use for intended purpose.

2.3 Liability and Guarantee

Gossen Metrawatt GmbH assumes no liability for property damage, personal injury or consequential damage resulting from improper or incorrect use of the product, in particular due to failure to observe the product documentation. Furthermore, all guarantee claims are rendered null and void in such cases.

Nor does Gossen Metrawatt GmbH accept any liability for data loss.

2.4 Opening the Instrument / Repairs

In order to ensure flawless, safe operation and to assure that the guarantee isn’t rendered null and void, the test instrument may only be opened by authorized, trained personnel. Even original replacement parts may only be installed by authorized, trained personnel.

Unauthorized modification of the test instrument is prohibited. If it can be ascertained that the test instrument has been opened

by unauthorized personnel, no guarantee claims can be honored by the manufacturer with regard to personal safety, measuring accuracy, compliance with applicable safety measures or any consequential damages.

If the guarantee seal is damaged or removed, all guarantee claims are rendered null and void.

2.5 Scope of Functions

PROFITEST … (Article Number)

PRO

✓

(M520N)

TECH+

✓✓

—

✓✓

(M520S)

MBASE+

Testing of Residual Current Devices (RCDs) UT measurement without tripping the RCD Tripping time measurement Measurement of tripping current I Selective, SRCDs, PRCDs, type G/R AC/DC sensitive RCDs, types B and B+ Testing of insulation monitoring devices (IMDs) ——— Testing of residual current monitoring devices (RCMs) ——— Testing for N-PE reversal

Measurement of Loop Impedance Z

Fuse table for systems without RCDs Without tripping the RCD, fuse table —— 15 mA measurement

Earthing resistance RE (mains operation)

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

Earthing resistance RE

(battery operation)

/ Z

L-PE

L-N

3 or 4-wire measuring method via PRO-RE

✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓

——

✓✓✓✓

—

adapter Soil resistivity rE (battery operation)

(4-wire measuring method

Selective earthing resistance R

with 2-pole adapter, probe, earth electrode and current clamp sensor

Selective earthing resistance R

with probe, earth electrode and (4-wire measuring method

(3-wire measuring method)

current clamp sensor

via PRO-RE adapter)

E (mains operation)

E (battery operation)

current clamp sensor

via PRO-RE adapter and

)

—

✓✓✓✓

—

Earth loop resistance RELOOP (battery operation)

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

IL, I Phase sequence Earth leakage resistance R Voltage drop (U) Standing-surface insulation Z Meter startup (kWh test) Leakage current with PRO-AB (IL) adapter Residual voltage test (Ures) Intelligent ramp (ta + I) Electric vehicles at charging stations (IEC 61851-1) Documentation of fault simulations at PRCDs with the PROFITEST PRCD adapter

Features Selectable user interface language Memory (database for up to 50,000 objects) Automatic test sequence function

/ U

L-N

current measurement with clamp

AMP

L-PE

/ U

INS

N-PE

/ f

E(INS)

RS 232 port for RFID/barcode reader

USB port for data transmission ETC PC database and report generating software Measuring category: CAT III 600 V / CAT IV 300 V DAkkS calibration certificate

The so-called live measurement is only advisable if there’s no bias current within the system. Only suitable for motor protection switches with small nominal current values.

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

—

✓✓✓✓

✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓

——— ——— ——— ——

———

✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓ ✓✓✓✓

XTRA

(M522R)

✓ ✓

✓

✓ ✓ ✓

✓

(M522P)

Gossen Metrawatt GmbH 5

Page 6

3 Documentation

Note

This documentation describes several test instrument. As a result, features and functions may be described which do

not apply to your instrument. Furthermore, illustrations may differ from your instrument.

These operating instructions describe a test instrument with software/firmware version 1.16.20.

List of Abbreviations and their Meanings

RCCBs (residual current circuit breakers / RCDs): I



N

PRCD Portable residual current device

RCD- Selective RCCB R

SRCD Socket residual current device (permanently installed) t

I

IN

Overcurrent protective devices: I

L-N

L-PE

Earthing: R

ELoop

Low-value resistance at protective, earthing and bonding conductors:

LO+

LO–

Insulation: R

E(INS)

INS

Current: I

Voltage: f Line voltage frequency

Tripping current Nominal residual current Rising test current (residual current)

PRCD-S: with protective conductor detection and monitoring PRCD-K: with undervoltage trigger and protective conductor monitoring

Calculated earthing or earth electrode loop resistance

Time to trip / breaking time Touch voltage at moment of tripping Touch voltage

relative to nominal residual current I

N

Touch voltage limit value

Calculated short-circuit current (at nominal voltage) Supply impedance Loop impedance

Operational earth resistance Measured earthing resistance Earth electrode loop resistance

Equipotential bonding conductor resistance (+ pole to PE)

Equipotential bonding conductor resistance (– pole to PE)

Earth leakage resistance (DIN 51953) Insulation resistance Standing surface insulation resistance Standing surface insulation impedance

Breaking current Leakage current (measured with current clamp trans-

former) Measuring current Nominal current Test c u rr e nt

Nominal voltage rated frequency

U Voltage drop as % U Voltage measured at the test probes during and after

insulation measurement R

Batt

INS

(Rechargeable) battery voltage Earth electrode voltage When measuring R

INS

: test voltage for ramp function:

INS

tripping or breakdown voltage U U U U U

L-L

L-N

L-P E N

Voltage between two phase conductors

Voltage between L and N

Voltage between L and PE

Nominal line voltage

Highest measured voltage during determination of

phase sequence U U

S-PE

Voltage between probe and PE

Phase-to-earth voltage

4 Getting Started

1. Read and adhere to the product documentation. In particular

observe all safety information in the documentation, on the instrument and on the packaging. See:

– section 1, “Safety Instructions”, on page 4 – section 2, “Applications”, on page 5 – section 3, “Documentation”, on page 6

2. Familiarize yourself with the test instrument.

See: – section 5, “The Instrument”, on page 7 – section 6, “Operating and Display Elements”, on page 16 – section 7, “Operation”, on page 26

3. Enter the basic settings.

See section 8, “Instrument Settings”, on page 27.

4. Optional but recommended: Create a database in the test

instrument. See section 9, “Database”, on page 31.

5. Read the basic information provided in section 10, “General

Information on Measurements”, on page 36.

6. Perform measurements.

Refer to individual measurements or test sequences (automatic sequences):

– section 11, “Measuring Voltage and Frequency”, on page

41 – section 12, “ – section 13, “Testing of Breaking Requirements for Overcur-

rent Protective Devices, Measurement of Loop Impedance

and Determination of Short-Circuit Current (ZL-PE and I

Functions)”, on page 54 – section 14, “Measuring Supply Impedance (Z

on page 57 – section 15, “Earthing Resistance Measurement (Function

)”, on page 59

– section 16, “

73 – section 17, “

(Protective Conductor and Equipotential Bonding Conductor)

on page 77 – section 18, “Measurement with Accessory Sensors”, on

page 80 – section 19, “Special Functions – EXTRA Switch Position”,

on page 81 – section 20, “Test Sequences (Automatic Test Sequences) –

AUTO Function”, on page 95

Further interesting information: section 21, “Maintenance”, on page 97.

Testi ng RC Ds

Measurement of Insulation Resistance

”, on page 43

Function)”,

L-N

”, o n pa ge

Measuring Low-Value Resistance of up to 200



”,

6 Gossen Metrawatt GmbH

Page 7

5 The Instrument

XY123

2018-07

D-K

15080-01-01

5.1 Scope of Delivery

Standard scope of delivery for PROFITEST MASTER series: 1 Test instrument 1 Compact battery pack

(Z502H)

1 Earthing contact plug insert,

country-specific (PRO-SCHUKO / GTZ3228000R0001)

1 2-pole measuring adapter

and cable for expansion into a 3-pole adapter (PRO-A3-II / Z501O)

2 Alligator clips 1 Operating Instructions

1USB cable 1 Neck strap 1 ETC software*

1Charger

1 DAkkS calibration certificate

(this document)

(

Z502R)

5.3 Meanings of Symbols on the Instrument

Warning concerning a point of danger (attention, observe documentation!)

Protection category II device

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

The device and its batteries may not be disposed of with household trash. Further information is included in the operating instructions.

Indicates EC conformity

If the guarantee seal is damaged or removed, all guarantee claims are rendered null and void.

The special technical knowledge of qualified personnel is required for electrical installation or repair.

** Download from Internet

5.2 Optional Accessories (excerpt)

A complete overview of optional accessories including detailed information can be found in the data sheet for the test instrument.

The most important accessories are listed here:

• Barcode Profiscanner RS232 (Z502F) (barcode reader and scanner for RS 232 connection to the test instrument for identifying systems, electrical circuits and operating equipment.)

• PRO-HB (Z501V) Holder for test probes and measuring adapter

• Country-specific plug inserts – PRO-GB/USA (Z503B) – PRO-CH (GTZ3225000R0001)

• Plug inserts for PE and other similar measurements – PRO-RLO-II (Z501P)

(cable length: 10m)

– PRO-RLO 20 (Z505F)

(cable length: 20m)

– PRO-RLO 50 (Z505G)

(cable length: 50m)

• PRO-AB (Z502S) (leakage current measuring adapter for PROFITEST MXTRA)

• PROFITEST PRCD (M512R) (test adapter for testing portable safety switches (types PRCD-K and PRCD-S) with the help of the PROFITEST MXTRA)

• PROFITEST EMOBILITY (M513R) (adapter for standards-compliant testing of single and 3phase, mode 2 and 3 charging cables with simulation of faults)

• E-SET BASIC (Z593A) (basic earth measurement accessories)

• E-SET PROFESSIONAL (Z592Z) (extensive earth measurement accessories)

CAT III 600 V

CAT IV 300 V

Calibration seal (blue seal): Consecutive number Deutsche Akkreditierungsstelle GmbH – calibration lab Registration number Date of calibration (year – month) Measuring category

Gossen Metrawatt GmbH 7

Page 8

5.4 Instrument Overview

456

91011

16 1715

19 20 21

RS 232

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

* See section 10.1 on page 36 regarding use of the

probes.

Test Instrument and Adapter

Test Instrument and Adapter:

1 Control panel with keys and display screen 2 Eyelets for attaching the neck strap 3 Rotary selector switch 4 Measuring adapter (2-pole) 5 Plug insert (country-specific) 6 Test plug (with retaining ring) 7 Alligator clip (plug-on) 8 Test probes 9 ON/START ▼ key * 10 I 11 Contact surfaces for finger contact 12 Test plug holder 13 Fuses 14 Holders for test probes (8)

8 Gossen Metrawatt GmbH

/compens./ZOFFSET key

N

Connections for Current Clamp, Probe, PRO-AB Leakage Current Measuring Adapter:

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

Interfaces, Charger Connection:

19 USB slave for connection to a PC 20 RS 232 port for connecting barcode or RFID reader 21 Socket for Z502R charger 22 Battery compartment lid (compartment for batteries and

spare fuses)

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

Accessories:

A PRO-HB (Z501V) test probe and measuring adapter holder –

can be purchased separately

Page 9

(1) Control Panel – Display Panel

Attention!

See section 6.1, “Control Panel”, on page 16. See section 6.2, “Display”, on page 16.

(2) Eyelets for the Neck Strap

The included neck strap can be attached at the right and left hand sides of the instrument. You can hang the instrument from your neck and keep both hands free for measurement.

(3) Rotary Selector Switch

The following basic functions can be selected with the rotary switch:

SETUP / I EXTRA / AUTO

N

/ IF / Z

L-P E

/ Z

L-N

/ RE / R

/ R

/ U / SENSOR /

INS

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).

This key has the same function as the

▼ key on the test plug.

(10) IN / I Key (at the control panel)

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 touch voltage for RCCB testing (I

• Measurement of ROFFSET is started in the R

N

/ Z

function.

L-N

• Semiautomatic polarity reversal (see section 10.9)

(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.

In the event a potential difference of greater than 25 V between protective conductor terminal PE and the contact surface, PE is displayed. See “LED Indications, Mains Connections and Potential Differences” on page 17.

(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 device in case of 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.

See section 21.2, “Fuse Replacement”, on page 97.

(5) Plug Insert (country-specific)

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 directly connected to earthing contact outlets. There’s no need to 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 protective contacts in the earthing contact outlet are connected to one another, as well as to the system protective conductor, for all types of protective conductor measurements when the plug insert is attached to the test plug.

(6) Test Plug

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.

(7) Alligator Clip (plug-on)

(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.

(14) Holders for Test Probes (8)

(15/16) Current Clamp Connector

Only the current clamp transformers offered as accessories may be connected to these sockets.

(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 touch voltage during RCD testing. The probe is connected with a 4 mm contact-protected plug.

The instrument determines whether or not the probe has been properly set and displays results at the display panel.

(19) USB Port

The USB port allows for the exchange of data between the test instrument and a PC.

(20) RS 232 Port

This port allows for data entry by means of a barcode scanner or an RFID reader.

(21) Charging Socket

Only the Z502R charger for charging batteries inside the test instrument may be connected to this socket.

(22) Battery Compartment Lid – Replacement Fuses

Before removing the lid is removed, the instrument must be disconnected from the measuring circuit at all poles!

(9) ON/Start

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

▼ Key

The compartment under the lid accommodates the rechargeable battery pack (Z502H), or commercially available rechargeable batteries or regular batteries.

Two replacement fuses are also located under the battery com-

partment lid. switched off, it can only be switched on by pressing the key at the control panel.

Gossen Metrawatt GmbH 9

Page 10

5.5 Technical Data

BAT

Nominal Ranges of Use

Voltage U

Frequency f

Overall voltage range Overall frequency range 15.4 Hz  420 Hz Line voltage Sinusoidal Temperature range 0 C  +40C Battery voltage 8 V  12 V Supply impedance angle Corresponds to cos =1  0.95 Probe resistance < 50 k

120 V (108 V  132 V) 230 V (196 V  253 V) 400 V (340 V  440 V)

16⅔ Hz

(15.4 V  18 Hz) 50 Hz (49.5 V  50.5 Hz) 60 Hz (59.4 V  60.6 Hz) 200 Hz (190 V  210 Hz) 400 Hz (380 V  420 Hz)

65 V  550 V

Reference Conditions

Line voltage 230 V  0.1% Line frequency 50 Hz  0.1% Measured qty. frequency Measured qty. waveform

45 Hz 65 Hz Sine (deviation between effective and

rectified value  0.1%)

Supply impedance angle cos  =1 Probe resistance  10  Supply voltage 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

Power Supply

Batteries 8 each AA 1.5 V

We recommend exclusive use of the included rechargeable battery pack (2000 mAh, Z502H).

Number of measurements (standard setup with illumination) – For R

INS

– For R

Battery test Symbolic display of rechargeable

Battery-saving circuit Display illumination can be switched off.

Safety shutdown If supply voltage is too low, the instru-

Recharging socket Inserted rechargeable batteries can be

Charging time Z502R charger: approx. 2 hours *

1 measurement – 25 s pause: approx. 1100 measurements

Auto polarity reversal / 1  (1 measuring cycle) – 25 s pause: approx. 1000 (Z502O) measurements

battery voltage

The test instrument is switched off automatically after the last key operation. The user can select the desired on-time.

ment is switched off, or cannot be switched on.

recharged directly by connecting a charger to the recharging socket: Z502R charger

Overload Capacity

ISO

, U

L-P E

, Z

L-N

, R

RCD, R Z

Protection with fine-wire fuses FF 3.15 A 10 s,

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.)

Electronic protection prevents switching on if interference voltage is present.

Fuses blow at > 5 A 

Electrical Safety

Protection class II Nominal voltage 230/400 V (300/500 V) Test voltage 3.7 kV, 50 Hz Measuring category CAT III 600 V or CAT IV 300 V Pollution degree 2 Fuses

L and N terminals 1 G fuse-link ea.

FF 3.15/500G 6.3 × 32 mm

Electromagnetic Compatibility (EMC)

Product standard EN 61326-1

Interference emission

EN 55022 A

Interference immunity

EN 61000-4-2 Contact/atmos. – 4 kV/8 kV EN 61000-4-3 10 V/m EN 61000-4-4 Mains connection – 2 kV EN 61000-4-5 Mains connection – 1 kV EN 61000-4-6 Mains connection – 3 V EN 61000-4-11 0.5 periods / 100%

Test value F e a t ure

Class

Ambient Conditions

Accuracy 0 … + 40 C Operation –5 … + 50 C Storage –20 … + 60 C (without batteries) Relative humidity

Max. 75%, no condensation allowed

Elevation Max. 2000 m

Mechanical Design

Display Multiple display with dot matrix,

128 × 128 pixels Dimensions W × L × H = 260 × 330 × 90 mm Weight Approx. 2.7 kg with batteries Protection Housing: IP 40, test probe: IP 20

per EN 60529

Data Interfaces

Type USB for PC connection Type RS 232 for barcode and RFID readers

* Maximum charging time with fully depleted batteries.

A timer in the charger limits charging time to no more than 4 hours.

10 Gossen Metrawatt GmbH

Page 11

5.6 Characteristic Values for PROFITEST MTECH+ and PROFITEST MBASE+

Func-

tion

Measured

Quantity

L-P E

N-PE

3 AC

Probe

L-N

IN

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

0V … 99.9V

100 V … 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 … 999 

1.00 k … 6.51 k 3  … 999 

1 k … 2.17 k

1 … 651  1

0.3  … 99.9  100  … 217 

0.2  … 9.9 

10  … 130 

0 m … 999 m

1.00 … 9.99 

0 m… 999 m

1.00  … 9.99 

10.0  … 29.9 

0 to 9.9 A

10 … 999 A

1.00 … 9.99 kA

10.0 … 50.0 kA



IF (IN = 6 mA) 1.8 … 7.8 mA

IF (IN = 10 mA) 3.0 … 13.0 mA 3.0 … 13.0 mA 3.0 … 13.0 mA

(IN = 30 mA) 9.0 … 39.0 mA 9.0 … 39.0 mA 9.0 … 39.0 mA

(IN = 100 mA) 30 … 130 mA 1 mA 30 … 130 mA 30 … 130 mA

(IN = 300 mA) 90 … 390 mA 1 mA 90 … 390 mA 90 … 390 mA

(IN = 500 mA) 150 … 650 mA 1 mA 150 … 650 mA 150 … 650 mA

/ UL = 25 V 0 … 25.0 V

I

UI / UL = 50 V 0 … 50.0 V 0 … 50.0 V

(IN × 1) 0 … 1000 ms 1ms 6 … 500 mA 0 … 1000 ms

(IN × 2) 0 … 1000 ms 1ms

(IN × 5) 0 … 40 ms 1 ms

()

L-P E

L-N

L-P E

+ DC

L-P E

ZL-PE

L-N

+ DC)

Resolution

0.1 Hz 1 Hz

0.1 V 1V

1 

0.01 k 1 

0.01 k

0.1  1 

0.1 mA

0.1 V Same as I

1 m

0.01 

0.1 

0.1 A 1A

10 A

100 A

0.6  … 9.9  0.1  Display range only

(15 mA)

L-P E

ISC (15 mA)

RE (with probe)

(without probe)

values same as

L-P E

RE DC+

Sel

RE DC+ 80  … 999 

Clamp

EXTRA

10.0 … 99.9  100 … 999 

100 … 999 mA

0.00 … 9.99 A

10.0 … 99.9 A

0 m … 999 m

1.00  … 9.99 

10.0  … 99.9  100  … 999 

]

1 k …9.99 k

0 m … 999 m

1.00  … 9.99 

10.0  … 29.9 

0  … 999 

0 … 253 V 1 V — Calculated value

10 k … 199 k

200 k … 999 k

1.00 M … 9.99 M

10.0 M … 30.0 M

 

0.1  1 

1mA

0.01 A

0.1 A

1 m

0.01 

0.1  1

0.01 k 1 m

0.01 

0.1 

1 m…

1 

1 m…

1 

1 k 1 k

0.01 M

0.1 M

Input

Impedance /

Measuring Range

Tes t Cu r rent

0.3 … 600 V

15.4 … 420 Hz

5M

= 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 mA …

2 × 500 mA

5 × 6 mA …

5 × 300 mA

1.3 A AC …

3.7 A AC

0.5A DC,

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 … 2.7 A AC

0.5 / 1.25 A DC

2.3 mA at 230 V

N

0.3 V … 600 V

1.0 V … 600 V

1.0 … 600 V

5 V … 70 V

Calculated value

from

= U

IN / IN

0 … 25.0 V

0 … 1000 ms

0 … 40 ms

0.15  … 0.49 

0.50  … 0.99 

1.00  … 9.99 

0.25  … 0.99 

1.00  … 9.99 

120 (108 … 132) V 230 (196 … 253) V 400 (340 … 440) V 500 (450 … 550) V

10.0  … 99.9  100  … 999 

Calculated value

depending on U

L-P E

/10 …1000 

0.15  … 0.49 

0.50  … 0.99 

1.0  …9.99  10  …99.9 

100  …999 

1 k …9.99 k

0.25  … 0.99 

1.00  … 9.99 

0.25  … 300 

10 k … 199 k

200 k … 999 k

1.00 M … 9.99 M

10.0 M … 30.0 M

Nominal Val-

Measuring Un-

ues

UN = 120, 230,

400, 500 V

= 16.7, 50,

60, 200, 400 Hz

U 120 V, 230 V,

400 V

fN = 50 Hz,

60 Hz

= 25 V, 50 V

N

6 mA,

10 mA,

30 mA, 100 mA, 300 mA,

500 mA

= 120 V,

230, 400,

500 V

fN =16.7 Hz, 50 Hz,

60 Hz

UN = 120, 230 V

= 50, 60 Hz

UN = 120, 230 V

fN = 16.78, 50,

and

60 Hz

UN = 120, 230 V

UN = 400 V

fN = 50, 60 Hz

UN = 120, 230 V

= 50, 60 Hz

See RE±(|20% rdg.|+20d) ±(|15% rdg.|+20d)

UN = 120, 230 V

fN = 50, 60 Hz

= U

 

±(|2% rdg.|+5d) ±(|1% rdg.|+5d)

±(|0.2% rdg.|+1d) ±(|0.1% rdg.|+1d)

±(|3% rdg.|+5d) ±(|3% rdg.|+1d)

±(|2% rdg.|+5d) ±(|2% rdg.|+1d)

±(|3% rdg.|+5d) ±(|3% rdg.|+1d)

+|10% rdg.|+1d

±(|5% rdg.|+1d)

+|10% rdg.|+1d

±(|10% rdg.|+30d)

±(|5% rdg.|+3d)

±(|18% rdg.|+30d) ±(|10% rdg.|+3d)

±(|10% rdg.|+10d)

±(|8% rdg.|+2d)

Value calculated 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)

±(|22% rdg.|+20d) ±(|15% rdg.|+20d)

±(|20% rdg.|+2d) ±(|10% rdg.|+3d)

L-N

±(|10% rdg.|+2d) ±(|5% rdg.|+3d)

certainty

4 ms 3 ms

Value calculated from Z

= UN/Z

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

±(|3.5% rdg.|+2d)

+|1% rdg.|–1d …

+|9% rdg.|+1d

±(|5% rdg.|+30d) ±(|4% rdg.|+30d)

±(|3% rdg.|+3d)

±(|6% rdg.|+50d)

±(|4% rdg.|+3d)

±(|2% rdg.|+2d) ±(|1% rdg.|+1d)

L-P E

(15 mA)

L-P E

±(|5% rdg.|+30d) ±(|4% rdg.|+30d)

±(|3% rdg.|+3d) ±(|3% rdg.|+3d) ±(|3% rdg.|+3d) ±(|3% rdg.|+3d)

±(|6% rdg.|+50d)

±(|4% rdg.|+3d)

Intrinsic

L-P E

(15 mA):

Connections

Plug

2-Pole

3-Pole

Insert

Adapter

Probe







option

ally



L-P E

 



Clamp Meters

WZ12C Z3512A



MFLEX

P300



Gossen Metrawatt GmbH 11

Page 12

PROFITEST MTECH+ and PROFITEST MBASE+

Func-

tion

ISO

SENSOR

6, 7

Measured

Quantity

, R

INS

ROFFSET 0.00  … 9.99  0.01 

L/Amp

Display Range

1 k … 999 k

1.00 M … 9.99 M

10.0 M … 49.9 M 1 k … 999 k

1.00 M … 9.99 M

10.0 M … 99.9 M 1 k … 999 k

E INS

1.00 M … 9.99 M

10.0 M … 99.9 M

100 M … 200 M

1 k… 999 k

1.00 M… 9.99 M

10.0 M… 99.9 M

100 M … 500 M

10 … 999 V

1.00 … 1.19 kV1V10 V

0.00  … 9.99 

10.0  … 99.9  100  … 199 

0.0 mA … 99.9 mA 0.1 mA 100 … 999 mA 1 mA

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 A … 150 A 1 A

0.0 … 99.9 mA 0.1 mA 100 … 999 mA 1 mA ±(|7% rdg.|+1d) ±(|5% rdg.|+1d)

0.00 A … 9.99 A 0.01 A 100 mV/A 0.05 A … 10 A

0.00 A … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A

0.00 A … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A 100 … 999 A 1 A

0.0 … 99.9 mA 0.1 mA

100 … 999 mA 1 mA

0.00 … 9.99 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.|+2d) ±(|3% rdg.|+2d)

0.00 … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A ±(|5% rdg.|+7d) ±(|3% rdg.|+7d) 100 … 999 A 1 A ±(|5% rdg.|+2d) ±(|3% rdg.|+2d)

Reso-

lution

1 k

10 k

100 k

1 k

10 k

100 k

1 k

10 k

100 k

1M 1 k

10 k

100 k

1M

0.01 

0.1  1 

0.01 A

Test Curre nt

= 1.5 mA

I  200 mA DC I < 260 mA DC

Tra ns form a-

tion ratio

1 V/A 5 A … 15 A

1 mV / A 5 … 150 A

1 V/A 5 … 1000 mA

10 mV/A 0.5 A … 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

Measuring

Range

50 k … 999 k

1.00 M … 49.9 M

50 k … 999 k

1.00 M … 99.9 M

50 k … 999 k

1.00 M … 200 M

50 k … 999 k

1.00 M … 499 M

10 … 1.19 kV

0.10  … 5.99

6.00  … 99.9

0.10  … 5.99 

6.00  … 99.9 

Nominal

Values



UN = 50 V I



= 1 mA



UN = 100 V



= 1 mA



UN = 250 V



= 1 mA

UN = 325 V, U



= 500 V,



= 1000 V

= 1 mA

 

U0 = 4.5 V ±(|4% rdg.|+2d) ±(|2% rdg.|+2d)

fN = 50, 60 Hz

16.7, 50, 60, 200, 400 Hz

= 50 Hz,

60 Hz

DC, 16.7 Hz,

50 Hz, 60 Hz,

200 Hz

Measuring

Uncertainty

K range

±(|5% rdg.|+10d)

M

±(|5% rdg.|+1d)

±(|3% rdg.|+1d)

±(|13% rdg.|+5d) ±(|5% rdg.|+4d)

±(|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.|+2d) ±(|5% rdg.|+2d)

±(|3.4% rdg.|+2d) ±(|3.1% rdg.|+2d) ±(|3.1% rdg.|+1d) ±(|3.1% rdg.|+1d) ±(|3.1% rdg.|+2d) ±(|3.1% rdg.|+1d)

±(|27% rdg.|+100d)

±(|27% rdg.|+11d) ±(|27% rdg.|+12d) ±(|27% rdg.|+11d)

±(|27% rdg.|+100d)

±(|27% rdg.|+11d)

±(|5% rdg.|+12d) ±(|3% rdg.|+12d)

±(|5% rdg.|+50d) ±(|3% rdg.|+50d)

Intrinsic

Uncertainty

k range

±(|3% rdg.|+10d)

M

±(|3% rdg.|+1d)

±(|1.5% rdg.|+1d)

±(|3% rdg.|+2d) ±(|3% rdg.|+2d) ±(|3% rdg.|+1d) ±(|3% rdg.|+1d) ±(|3% rdg.|+2d) ±(|3% rdg.|+1d)

±(|3%

rdg.|+100d)

±(|3% rdg.|+11d) ±(|3% rdg.|+12d) ±(|3% rdg.|+11d)

±(|3%

rdg.|+100d)

±(|3% rdg.|+11d)

Plug

2-Pole

Insert

Adapter





Connections

Clamps / Meas. Ranges

3-Pole

WZ12CZ3512AMFLEX

Adapter

I 15A

150 A

10 A

100 A

1000

P300

30 A

300 A

CP1100

100 A

1000 A

U > 230 V with 2 or 3-pole adapter only

1×IN> 300 mA and 2 × IN> 300 mA and 5 × IN > 500 mA and I

> 300 mA only up to UN 230 V!

5×I

> 300 mA only where UN = 230 V

N

The transformation ratio selected at the clamp (1, 10, 100, 1000 mV/A)

Key: d = digit(s), rdg. = reading (measured value)

must be set in the “Type” menu with the rotary switch in the “SENSOR” position.

Where R

The specified measuring and intrinsic uncertainties already include those of the respective current clamp.

Measuring range of the signal input at the test instrument, UE: 0 … 1.0 V

Input impedance of the signal input at the test instrument: 800 k

DC bias only possible with PROFITEST MTECH+

TRMS

(0 … 1.4 V

Eselective/REtotal

peak

< 100

) AC/DC

12 Gossen Metrawatt GmbH

Page 13

5.7 Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO

Func-

Measured

tion

Quantity

L-P E

N-PE

N

L-P E

L-N

3 AC

Probe

L-N

IN

IF (IN = 6 mA) 1.8 … 7.8 mA

(IN = 10 mA) 3.0 … 13.0 mA 3.0 … 13.0 mA 3.0 … 13.0 mA

(IN = 30 mA) 9.0 … 39.0 mA 9.0 … 39.0 mA 9.0 … 39.0 mA

(IN = 100 mA) 30 … 130 mA 1 mA 30 … 130 mA 30 … 130 mA

(IN = 300 mA) 90 … 390 mA 1 mA 90 … 390 mA 90 … 390 mA

(IN = 500 mA) 150 … 650 mA 1 mA 150 … 650 mA 150 … 650 mA

/ UL = 25 V 0 … 25.0 V

I

/ UL = 50 V 0 … 50.0 V 0 … 50.0 V

I

(IN × 1) 0 … 1000 ms 1 ms 6 … 500 mA 0 … 1000 ms

(IN × 2) 0 … 1000 ms 1 ms

(IN × 5) 0 … 40 ms 1ms

()

L-P E

L-N

L-P E

+ DC

L-P E

ZL-PE +

(15 mA)

L-PE

ISC (15 mA)

Display Range

0 … 99.9 V 0.1 V

100 V … 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 … 999 

1.00 k … 6.51 k 3  … 999 

1 k … 2.17 k

1 … 651  1

0.3  … 99.9  100  … 217 

0.2  … 9.9  10  … 130 

0 m… 999 m

1.00 … 9.99  1 m

0 m … 999 m

1.00  … 9.99 

10.0  … 29.9 

0 to 9.9 A

10 … 999 A

1.00 … 9.99 kA

10.0 … 50.0 kA

)

0.6  … 99.9  100  … 999 

0.10 … 9.99 A

10.0 … 99.9 A

100 … 999 A

0 m … 999 m

1.00  … 9.99 

10.0  … 99.9  100  … 999  1 k …9.99 k

0.5  … 99.9  100  … 999 

0 m … 999 m

1.00  … 9.99 

10.0  … 29.9 

0 m … 999 m

1.00  … 9.99 

10.0  … 99.9  100  … 999 

0 m … 999 m

1.00  … 9.99 

10.0  … 99.9  100  … 999 

10 k … 199 k 1 k

200 k … 999 k

1.00 M … 9.99 M

10.0 M … 30.0 M

0 … 253 V 1 V

probe) +

E.sl

(only with probe)

Sel

Clamp

(only with probe)

EXTRA

(without

E.sl

probe)

(with probe)

E (15 mA)

(without/with

probe)

(without

E.sl

(with probe)

+ DC

E.sel

+ DC

Reso-

lution

0.1 Hz 1 Hz

0.1 V 1V

1 

0.01 k 1 

0.01 k

0.1  1 

0.1 mA

0.1 V Same as I

0.01 

0.1 

0.1 A 1A

10 A

100 A

0.1  1 

0.01 A

0.1 A

1 m

0.01 

0.1  1

0.01 k

0.1  1

1 m

0.01 

0.1 

1 m

0.01 

0.1  1

1 m

0.01 

0.1  1

1 k



0.01 M



0.1 M

Input

Impedance /

Test Curre nt

Measuring

Range

0.3 … 600 V

15.4 … 420 Hz

5M

0.3 … 600 V

1.0 V … 600 V

1.0 … 600 V

5 … 70 V

Calculated value

from

= U

IN / IN

= 10 mA × 1.05



= 30 mA × 1.05



= 100 mA × 1.05



= 300 mA × 1.05



= 500 mA × 1.05



N

1.8 … 7.8 mA 1.8 … 7.8 mA

0 … 25.0 V

2 × 6 mA …

2 × 500 mA

5 × 6

5 × 300 mA

3.7 A AC …

4.7 A AC

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

3.7 … 4.7 A AC

2.1 A AC

400 mA AC

40 mA AC

3.7 … 4.7 A AC

0.5, 1.25 A DC

2.3 mA at 230 V

…

0 … 1000 ms

0 … 40 ms

0.10  … 0.49 

0.50  … 0.99 

1.00  … 9.99 

0.25  … 0.99 

1.00  … 9.99 

120 (108 … 132) V 230 (196 … 253) V 400 (340 … 440) V 500 (450 … 550) V

10.0  … 99.9  100  … 999 

100 … 12 A

= 120 V)

200 mA … 25 A

= 230 V)

0.10  … 0.49 

0.50  … 0.99 

1.0  …9.99  10  …99.9 

100  …999  1 k …9.99 k

10  …99.9 

100  …999 

0.25  … 0.99 

1.00  … 9.99 

RE = 0.10 …

9.99 W

0.25  … 300 

< 10 

E.tot

10 k … 199 k

200 k … 999 k

1.00 M … 9.99 M

10.0 M … 30.0 M

 

Nominal

Valu es

UN = 120 V, 230 V, 400 V, 500 V,

= 16.7, 50,

60, 200, 400 Hz

120 V, 230 V,

400 V

fN = 50, 60 Hz

UL = 25, 50 V

N

6 mA, 10 mA, 30 mA,

100 mA, 300 mA,

500 mA

= 120, 230,

400, 500 V

fN =16.7 Hz, 50 Hz,

60 Hz

UN = 120, 230 V

= 50, 60 Hz

UN = 120, 230 V fN = 16.7, 50,

60 Hz

same as

function U

fN = 50, 60 Hz

UN = 120, 230 V

= 50, 60 Hz

UN = 120, 230 V

= 50, 60 Hz

UN = 120, 230 V fN = 50, 60 Hz

UN = 120, 230 V

= 50, 60 Hz

UN = 120, 230 V

= 50, 60 Hz

= U

L-N

Measuring

Uncertainty

Intrinsic

Uncertainty

±(|2% rdg.|+5d) ±(|1% rdg.|+5d)

±(|0.2% rdg.|+1d) ±(|0.1% rdg.|+1d)

±(|3% rdg.|+5d) ±(|3% rdg.|+1d) ±(|2% rdg.|+5d) ±(|2% rdg.|+1d) ±(|3% rdg.|+5d) ±(|3% rdg.|+1d)

+|10% rdg.|+1d

±(|2% rdg.|+5d) ±(|2% rdg.|+1d) ±(|1% rdg.|+5d) ±(|1% rdg.|+1d) ±(|2% rdg.|+5d) ±(|2% rdg.|+1d)

+|1% rdg.|–1d …

+|9% rdg.|+1d

±(|5% rdg.|+1d) ±(|3.5% rdg.|+2d)

+|10% rdg.|+1d

+|1% rdg.|–1d …

+|9% rdg.|+1dU

4 ms 3 ms

±(|10% rdg.|+20d)

±(|5% rdg.|+3d)

±(|18% rdg.|+30d) ±(|10% rdg.|+3d)

±(|5% rdg.|+20d) ±(|4% rdg.|+20d)

±(|3% rdg.|+3d)

±(|6% rdg.|+50d)

±(|4% rdg.|+3d)

Value calculated from Z

±(|10% rdg.|+10d)

±(|8% rdg.|+2d)

±(|10% rdg.|+20d) ±(|10% rdg.|+20d)

±(|5% rdg.|+3d)

±(|10% rdg.|+3d) ±(|10% rdg.|+3d) ±(|10% rdg.|+3d)

±(|10% rdg.|+10d)

±(|8% rdg.|+2d)

±(|18% rdg.|+30d)

±(|10% rdg.|+3d)

Calculated U

Value calculated from

= UN/Z

±(|2% rdg.|+2d) ±(|1% rdg.|+1d)

(15 mA)

L-PE

±(|5% rdg.|+20d) ±(|4% rdg.|+20d)

±(|3% rdg.|+3d) ±(|3% rdg.|+3d) ±(|3% rdg.|+3d) ±(|3% rdg.|+3d)

±(|2% rdg.|+2d) ±(|1% rdg.|+1d)

±(|6% rdg.|+50d)

±(|4% rdg.|+3d)

= UN × RE/R

±(|20% rdg.|+20d) ±(|15% rdg.|+20d)

±(|22% rdg.|+20d) ±(|15% rdg.|+20d)

±(|20% rdg.|+2d) ±(|10% rdg.|+3d)

±(|10% rdg.|+2d) ±(|5% rdg.|+3d)

L-PE

Plug

2-Pole

Insert

Adapter







 

E.sl





L-P E

Connections

3-Pole

Adapter



Probe



option-

ally

Clamp Meters

WZ12C Z3512A



MFLEX

P300



Gossen Metrawatt GmbH 13

Page 14

Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO

Func-

Measured

tion

Quantity

IMD test

EXTRA

, R

INS

ISO

SEN-

SOR

6, 7

ROFFSET 0.00  … 9.99  0.01 

L/Amp

1.00M … 9.99 M

10.0M … 49.9 M

1.00 M … 9.99 M

10.0 M … 99.9 M

E INS

1.00 M … 9.99 M

10.0 M … 99.9 M 100 M … 200 M

Display Range

20 k… 648 k

2.51 M

1k … 999 k

1 k … 999 k

1 … 999 k

1.00 … 9.99 M

10.0 … 99.9 M 100 … 500 M

10 … 999 V DC

1.00 … 1.19 kV1V10 V

0.00  … 9.99 

10.0  … 99.9  100  … 199 

0.0 … 99.9 mA 0.1 mA 100 … 999 mA 1 mA

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.|+1d) ±(|5% rdg.|+1d)

0.00 … 9.99 A 0.01 A 100 mV/A 0.05 … 10 A ±(|3.4% rdg.|+2d) ±(|3% rdg.|+2d)

0.00 … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)

0.00 … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A ±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d) 100 … 999 A 1 A ±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)

0.0 … 99.9 mA 0.1 mA 100 … 999 mA 1 mA

0.00 … 9.99 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.|+2d)

0.00 … 9.99 A 0.01 A

10.0 … 99.9 A 0.1 A ±(|5% rdg.|+7d) 100 … 999 A 1 A ±(|5% rdg.|+2d)

Reso-

Test Current Measuring Range

lution

IT line voltage

1 k

UN = 90 …

0.01 M

1 k

10 k

100 k

1 k

10 k

100 k

1 k

10 k

100 k

1M

1 k

10 k

100 k

1M

0.01 

0.1  1 

550 V

= 1.5 mA

I  200 mA DC I < 260 mA DC

Tra ns fo rma -

tion

ratio 3

1 V/A 5 … 15 A

1 mV / A 5 … 150 A

1 V/A 5 … 1000 mA

10 mV/A 0.5 … 100 A

1 mV / A 5 … 1000 A

1 V/A

0.01 A

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

20 k… 199 k 200 k … 648 k

2.51 M

50 k … 999 k

1.00 M … 49.9 M

50 k … 999 k

1.00 M … 99.9 M

50 k … 999 k

1.00 M … 200 M

50 k … 999 k

1.00 M … 499 M

10 … 1.19 kV ±(|3% rdg.|+1d)

0.10  … 5.99 

6.00  … 99.9 

0.10  … 5.99 

6.00  … 99.9 

30 …

1000 mA

Nominal

Values

IT system nomi-

nal voltages

120 V, 230 V,

400 V, 500 V fN = 50, 60 Hz

= 50 V

= 1 mA



UN = 100 V



= 1 mA



UN = 250 V



= 1 mA

UN = 325 V



= 500 V



= 1000 V

= 1 mA

= 4.5 V ±(|4% rdg.|+2d) ±(|2% rdg.|+2d)

fN = 50, 60 Hz

16.7, 50, 60, 200, 400 Hz

fN = 50, 60 Hz

DC, 16.7 Hz,

50 Hz, 60 Hz,

200 Hz

Measuring

Uncertainty

±7%

±12%

±3%

K range

±(|5% rdg.|+10d)

M

±(|5% rdg.|+1d)

±(|13% rdg.|+5d) ±(|5% rdg.|+4d)

±(|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.|+2d) ±(|5% rdg.|+2d)

±(|3.1% rdg.|+2d) ±(|3% rdg.|+2d)

±(|3.1% rdg.|+1d) ±(|3% rdg.|+1d)

±(|27% rdg.|+100d) ±(|3% rdg.|+100d)

±(|27% rdg.|+11d) ±(|27% rdg.|+12d) ±(|27% rdg.|+11d)

±(|27% rdg.|+100d) ±(|3% rdg.|+100d)

±(|27% rdg.|+11d)

±(|5% rdg.|+12d)

±(|5% rdg.|+50d) ±(|3% rdg.|+50d)

Intrinsic

Uncertainty

±5%

±10%

±2%

k range

±(|3% rdg.|+10d)

M

±(|3% rdg.|+1d)

±(|1.5% rdg.|+1d)

±(|3% rdg.|+11d) ±(|3% rdg.|+12d) ±(|3% rdg.|+11d)

±(|3% rdg.|+11d)

±(|3% rdg.|+12d)

±(|3% rdg.|+2d)

±(|3% rdg.|+7d) ±(|3% rdg.|+2d)

Connections

Plug

Insert

2-Pole

Adapter

Clamps / Meas. Ranges

3-Pole

Adapter

WZ12C Z3512A





I 15A

150 A

10 A

100 A

1000

MFLEX

P300

30 A

300 A

CP1100

100 A

1000 A

U > 230 V, with 2 or 3-pole adapter only

IN> 300 mA and 2

> 300 mA only up to UN 230 V!

The transformation ratio selected at the clamp (1/10/100/1000 mV/A)

IN> 300 mA and 5

IN > 500 mA and

Key: d = digit(s), rdg. = reading (measured value)

must be set in the “Type” menu with the rotary switch in the “SENSOR” position.

Where R

The specified measuring and intrinsic uncertainties already include those of the respective current clamp.

Measuring range of the signal input at the test instrument, UE: 0 … 1.0 V

Input impedance

DC bias only possible with PROFITEST MXTRA

Where Z

TRMS

(0 … 1.4 V

Eselective/REtotal

< 0.6 , ISC > UN/0.5  is displayed

L-PE

< 100

) AC/DC

peak

of the signal input at the test instrument

: 800 k

14 Gossen Metrawatt GmbH

Page 15

Characteristic Values, Special Measurements with PROFITEST MPRO and PROFITEST MXTRA

Func-

1 2

4 5 6 7 8 9 10 11

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 clearance d (p) 0.1 … 999 m

RE, 2 clamps

10.0 k … 19.9 k

10.0 k… 49.9 k

1.00 m … 9.99 km

Display Range

0.00  … 9.99 

10.0  … 99.9  100  … 999 

1.00 k … 9.99 k

10.0 k … 50.0 k

0.00  … 9.99 

10.0  … 99.9  100  … 999 

1.00 k … 9.99 k

0.0 m … 9.9 m

100 m … 999 m

0.00  … 9.99 

10.0  … 99.9  100  … 999 

1.00  … 1.99 k

10 11

Reso-

lution

0.01 

0.1  1 

0.01 k

0.1 k

0.01 

0.1  1 

0.01 k

0.1 k

0.1 m 1 m

0.01

kWm

0.01 

0.1 

1 

0.01 k

Current /

Signal Freq.

16 mA/128 Hz

1.6 mA/128 Hz

0.16 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

0.16 mA/128 Hz 16 mA/128 Hz

1.6 mA/128 Hz

0.16 mA/128 Hz

30 V / 128 Hz

100 m … 9.99 km 500 m … 9.99 km

5.00 km … 9.99 km

Signal frequency without interference signal PRO-RE (Z501S) adapter cable for test plug, for connecting earth probes (E-Set 3/4) PRO-RE/2 adapter cable for test plug, for connecting the E-CLIP2 generator clamp Generator clamp: E-CLIP2 (Z591B) Clamp meter: Z3512A (Z225A) Where R Where R

< 10 or clamp meter current > 500 µA

E.sel/RE E.H/RE

100 and R

E.E/RE

100

Where d = 20 m Where d = 2 m Only where RANGE = 20 k Only where RANGE = 50 k or AUTO

Te st

Measuring Range

1.00  … 19.9 

5.0  … 199 

50  … 1.99 k

0.50 k … 19.9 k

0.50 k … 49.9 k

1.00  … 9.99 

10.0  … 200 

0.10  … 9.99 

10.0  … 99.9 

Key: d = digit(s), rdg. = reading (measured value)

Measuring

Uncertainty

±(|10% rdg.|+10d

+ 1 

±(|15% rdg.|+10d) ±(|20% rdg.|+10d)

8 8

±(|20% rdg.|+10d)7±(|12% rdg.|+10d)

9 9 9

±(|10% rdg.|+5d) ±(|20% rdg.|+5d)

±(|3% rdg.|+5d

±(|10% rdg.|+10d) ±(|15% rdg.|+10d)

±(|5% rdg.|+5d)

±(|12% rdg.|+5d)

Intrinsic

Uncertainty

+ 0.5 

Connections

Adapter for Test Plug

Current Clamps

PRO-RE PRO-RE/2 Z3512A Z591B

354

Gossen Metrawatt GmbH 15

Page 16

6 Operating and Display Elements

Attention!

MEM: Key for memory functions

HELP:

Access context sensitive help

IN: Tripping test

Next step (semiautomatic measurement)

Start offset measurement

ON/START ▼:

Switch on

Start/stop measurement

ESC

: Return from submenu

SoftkeysFixed Function Keys

• Parameter selection

• Limit value specification

• Entry functions

LEDs and Connection Symbols 

section 6.3

Battery Display

Measuring Function

Measurement in progress/

Memory Occupancy

Measured

Parameters

Save Value

Battery full

Battery OK

Battery weak

Battery (almost) dead

Battery Display ( section 7.1)

BAT BAT

Memory Occupancy Display

MEM

Memory half full

MEM

Memory full > transfer data to PC

Connection Test – Mains Connection Test ( section 6.4)

NPEL

)(

Connection OK L and N reversed

NPEL NPEL

RUN READY

Connection Test  section 6.4

U < 8 V

LPEN

Quantities

stopped

6.1 Control Panel

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.

6.2 Display

The following appear at the display:

• 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

6.3 LEDs

MAINS/NETZ LED

This LED is only functional when the instrument is switched on. It has no function in the 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 6.4, “LED Indications, Mains Connections and Potential Differences”, beginning on page 17). This LED also lights up if line voltage is present when measuring R

and RLO.

ISO

UL/RL LED

This LED lights up red if touch voltage is greater than 25 V or 50 V during RCD testing, as well as after safety shutdown occurs. It also lights up if R fallen short of.

RCD • FI LED

This LED lights up red if the RCCB is not tripped within 400 ms (1000 ms for selective RCDs – type RCD S) 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.

or RLO limit values have been exceeded or

ISO

L-N

and U

L-P E

16 Gossen Metrawatt GmbH

The mains connection test may not be used to test systems or system components for the absence of voltage!

Page 17

6.4 LED Indications, Mains Connections and Potential Differences

Attention!

???

NPEL

NPELxNPELxNPEL

NPEL

x NPEL

LED Signals

Status

Tes t Plug

Measuring

Function Switch Position Function/Meaning

Adapter

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/

MAINS

L/RL

FI/RCD

Lights up

green

Blinks

green

Blinks red

Lights up

red

Blinks yel-

low

Lights up

red

Lights up

red

U, Z

L-N

IN / IF , Z

, kWh, IMD, int. ramp, RCM

IN / IF , Z

, kWh, IMD, int. ramp, RCM

IN / IF , Z

, kWh, IMD, int. ramp, RCM

RLO, R

IN / IF , Z

, Z

L-N

L-PE

RE, Z

, Z

ZST, IMD, kWh, RCM, PRCD,

L-PE

/ Z

L-N

/ Z

L-N

/ Z

L-N

, RE, IL, sensor

ISO

/ Z

L-N

, RLO, RE,

INS

, U, IL, U

, IF, IN,

L-PE

+I, RCM

e-mobility

IN / IF,

int. ramp

L-PE

, sensor

res

/ RE,

/ R

Correct connection, measurement enabled

N conductor not connected, measurement enabled

1) No line voltage or

2) PE interrupted Interference voltage is present at the test probes.

Measurement is disabled.

L and N are connected to the phase conductors.

The selected limit value has been violated.

Interference voltage limit value U

has been exceeded.

 Safety shutdown has occurred. The test has been manually assessed as “NOT OK”.

The RCCB was not tripped, or was tripped too late during the tripping test.

Mains Connection Test — Single-Phase System — LCD Connection Pictographs

The mains connection test may not be used to test systems or system components for the absence of voltage!

Status

Tes t Plug

Measuring

Function Switch Position

Function/Meaning

Adapter

Is dis-

played

Is dis-

played

Is dis-

played

Is dis-

played

Is dis-

played

Is dis-

played

All except for U

All except U and RE

All except for U

No connection detected

Connection OK

L and N reversed, neutral conductor charged with phase voltage

No mains connection

Standard display without connection messages

Neutral conductor interrupted

Protective conductor PE interrupted, neutral conductor N and/or phase conductor L charged with phase voltage

Is dis-

played

Is dis-

played

Is dis-

played

Is dis-

played

Gossen Metrawatt GmbH 17

All except for U

Phase conductor L interrupted, neutral conductor N charged with phase voltage

Phase conductor L and protective conductor PE reversed

Phase conductor L and protective conductor PE reversed Neutral conductor interrupted (with probe only)

L and N are connected to the phase conductors.

Page 18

Mains Connection Test — 3-Phase System — LCD Connection Pictographs

Attention!

The mains connection test may not be used to test systems or system components for the absence of voltage!

Status

Is displayed

Test Plug Measuring

Adapter

Function Switch Position Function/Meaning

(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

Is displayed

(3-phase measurement)

Conductor L1 to N

Conductor L2 to N

Conductor L3 to N

18 Gossen Metrawatt GmbH

Page 19

Connection Test — Battery Powered Earthing Resistance Measurements, “Battery Mode”

NPEL

Status

Is displayed

Tes t Plug

Measuring Adapter

PRO-RE

Clamp

meter

PRO-RE

Function Switch Position

Function/Meaning

Standard display without connection messages

Interference voltage at probe S > 3 V Restricted measuring accuracy

Interference/measuring current ratio > 50 at R

, 1000 at R

E(sel)

Restricted measuring accuracy at R

Interference current > 0 85 A or interference/measuring current ratio > 100

E(sel):

➭ No measured value, display: RE.Z – – –

Probe H not connected or R

>150k

E.H

➭ No measurement, display: RE – – –

> 50 k or

E.H

E.H/RE

> 10000

➭ Measured value is displayed, restricted measuring accuracy

Probe S not connected or R

> 150 k

E.S

or R

× R

E.S

> 25 M²

E.H

➭ No measurement, display: RE – – –

> 50 k or

E.S

E.S/RE

> 300

➭ Measured value is displayed, restricted measuring accuracy

Probe E not connected or R

> 150 kR

E.E

E.E/RE

> 2000

➭ No measurement, display: RE – – –

E.E/RE

>300

➭ Measured value is displayed, restricted measuring accuracy

E(2Z)

PE Test via Finger Contact at the Contact Surfaces on the Test Plug

Status

Tes t Plug

Measuring

Function Switch Position

Function/Meaning

Adapter

LCD LEDs

Is displayed

UL/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)

Status bar: Display of Charge Level, Memory Occupancy

Status

Tes t Plug

Measuring

Function Switch Position

Function/Meaning

Adapter

Battery

status

Is displayed

INS

, RE,

, Z

L-N

, I

Setup,

EXTRA,

SENSOR

L-PE



Battery charge level ≥ 80%

Battery charge level ≥ 50%

Battery charge level ≥ 30%

Battery charge level ≥ 15%

Battery charge level ≥ 0%

Gossen Metrawatt GmbH 19

Page 20

Battery

test

Is displayed

Memory Status

Is dis-

played

played Is dis-

played

played Is dis-

played

Error Messages — LCD Connection Pictographs

All

INS

, RE,

, Z

L-N

L-PE

, I



Setup,

EXTRA,

SENSOR

Rechargeable batteries must be recharged or replaced towards the end of their service life (U < 8 V).

Memory occupancy ≥ 100%

Memory occupancy ≥ 87.5%

Memory occupancy ≥ 75%

Memory occupancy ≥ 62.5%

Memory occupancy ≥ 50%

Memory occupancy ≥ 37.5%

Memory occupancy ≥ 25%

Memory occupancy ≥ 12.5%

Memory occupancy ≥ 0%

Status

Te st Plug

Measuring

Function Switch Position

Adapter

All measurements

XX I

XX Z

XX I

with protective

conductor



/ Z

L-N



/ IF

L-PE



L-PE

/ I

Function/Meaning

Potential difference  UL between finger contact and PE (earth contact) (frequency f  50 Hz) Remedy: Check PE connection Note: Only if is displayed: 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

/ R

4) U > 253 V for I

5) U > 253 V for measurement with probe

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 touch voltage measurement.

Remedy: Check selected nominal test current.

/ IF

N

/ IF with 500 mA

N

IF , I∆N,

LO,

EXTRA



ta+I∆

The PRCD has been tripped. Reason: Poor contact or defective PRCD

Externally accessible fuse is blown. The voltage ranges remain functional even if fuses have blown.

X X All except for U

Special case, R

blown fuse.

: Interference voltage during measurement may result in a

Remedy: Replace fuse as described in section 21.2.

20 Gossen Metrawatt GmbH

Page 21

L-N



/ Z

/ IF

L-PE

/ R

Frequency out of permissible range Remedy: Check the mains connection.

All

PRO-RE

PRO-RE/

All measurements with

XX R

/ RLO

RINS

RE (bat)

probe

ISO

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

Probe ES not connected or connected incorrectly

Generator current clamp (E-Clip-2) not connected

Interference voltage at the probe

Overvoltage or overloading of the measuring voltage generator during measurement of R

INS

Remedy: Ensure absence of voltage at the device under test.

/ IF



/ Z

L-N

L-PE

ZST, RST, R

Meter startup

XX All

XX R

XEXTRA

 

No mains connection Remedy: Check the mains connection.

Defective hardware Remedy:

1) Switch on/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

> 9.99 :

OFFSET measurement is not sensible. Remedy: Check system.

Z > 9.99 : OFFSET measurement is not sensible. Remedy: Check system.

U

OFFSET

> U:

OFFSET value is greater than the measured value at the consuming system.

OFFSET measurement is not sensible. Remedy: Check system.

Contact problem or blown fuse

XXR

/ RLO / R

ISO

Remedy: Check test plug or measuring adapter for correct seating in the

E(bat)

test plug, or replace the fuse.

Gossen Metrawatt GmbH 21

Page 22

IN/I

10 mA 30 mA 100 mA 300 mA 500 mA

MAX

at I

N

510  170  50  15  9 

MAX

for I

410  140  40  12  7 

The polarity of the 2-pole adapter must be reversed.



/ IF

N and PE are reversed.

1) Mains connection error Remedy: Check the mains connection. or

2) Display at the connection pictograph: PE interrupted (x) or

L-N



/ Z

/ IF

L-PE

/ R

bottom protective conductor bar interrupted with reference to the keys at the test plug Cause: Voltage measuring path interrupted

Result: Measurement is disabled

Note: Only if is displayed: Measurement can nevertheless be started by pressing the start key again.

Display at the connection pictograph: Top protective conductor bar interrupted with reference to the keys at the



/ IF

test plug Cause: Current measuring path interrupted Result: No measured value display



/ IF

Probe is not detected, probe not connected Remedy: Check probe connection.

Clamp is not detected: – Clamp is not connected or

– Current through clamp is too small (partial earthing resistance too high)

or – Transformation ratio set incorrectly

Remedy: Check clamp connection and transformation ratio.

Check the batteries in the METRAFLEX P300 and replace if necessary.



All

/ IF

L-PE

, 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 test 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: The required test current cannot be generated and measurement is aborted.

If specified touch voltage UL is exceeded:

and RE: User is prompted to switch to the 15 mA wave.

L-PE

RE alternative only: User is prompted to reduce the measuring range (reduce current.)

22 Gossen Metrawatt GmbH

Page 23

Entry Plausibility Check – Parameters Combination Checking — LCD Pictographs

Status

Tes t Plug

Measuring Adapter

Function Switch Position



/ IF



EXTRA



ta + I∆



/ IF



Function/Meaning

Parameter out of range

5 × 500 mA is not possible

Types B, B+ and EV/MI not possible with G/R, SRCD, PRCD

180° not possible for RCD-S, G/R, SRCD, PRCD-S, PRCD-K

DC not possible with G/R, SRCD, PRCD

/ IF



/ IF



EXTRA





RCM

Half-wave or DC not possible with type AC

DC not possible with type A, F

½ test current not possible with DC

2 × IN / 5 × IN with full-wave only

DC+ with 10 Ω only

No DC bias in the IT network

EXTRA  RCM

/ IF



EXTRA



RCM

Gossen Metrawatt GmbH 23

15 mA only possible in 1 k and 100  ranges!

With RCM: Types AC, F, B+ and EV/MI are not possible.

Measurement with half-wave or DC is not possible in IT systems.

Page 24

All

The parameters you have selected do not make sense in combination with previously configured parameters. The selected parameter settings will not be saved.

Remedy: Enter other parameters.

EXTRA  ta+I

Messages — LCD Pictographs — Test Sequences

Status

Te st Plug

Measuring

Function Switch Position

Adapter

AUTO

2-pole measurement via earthing contact plug is not possible in IT systems.



The intelligent ramp is not possible with RCD types RCD-S and G/R.

Function/Meaning

The test sequence includes a measurement which cannot be processed by the connected test instrument. The corresponding test step must be skipped. Example: The test sequence includes an RCM measurement which has been sent to the PROFITEST MTECH+.

The test sequence has been run successfully.

No test sequences have been saved. Cause: These may have been deleted as a result of any of the following

actions: changing the language, the profile or the DB mode, or resetting the test instrument to its default settings.

Error Messages — LCD Pictographs — PRO-AB Leakage Current Measuring Adapter

Status

Te st Plug

Measuring

Function Switch Position

Function/Meaning

Adapter

Measuring range exceeded

EXTRA  I

Change to the larger measuring range (test instrument and leakage cur-

rent measuring adapter).

Test measurement: The test has been passed.

The leakage current measuring adapter is now ready for use.

Test measurement: The test has not been passed.

The leakage current measuring adapter is defective. Contact our repair service department.

Test measurement:

Check the fuse in the leakage current measuring adapter.

24 Gossen Metrawatt GmbH

Page 25

Database and Entry Operations — Pictographs

Attention!

EXTRA EXTRA  RCM

L-N



/ IF

/ Z

L-PE



tA+I

Measured Value Storage with Deviating Electrical Circuit Parameter

The electrical circuit parameter selected by yourself at the test instrument does not coincide with the parameter entered under object data in the structure.

Example: Residual operating current is specified as 10 mA in the database, but you have performed measurement with 100 mA. If you want to perform all future measurements with 100 mA, the value in the database



has to be changed by acknowledging with the key. The measured value is documented and the new parameter is accepted.

If you want to leave the parameter in the database unchanged, press the

key. The measured value and the changed parameter are only docu-

mented in this case.

All

Please enter a designation (alphanumeric).

Operation with a Barcode Scanner Error message when the “EDIT” entry field is opened and rechargeable

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.

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 in

section 8).

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 8).

All

SETUP

Memory is full.

Remedy: Save your measurement data to a PC and then clear memory at the test instrument by deleting the database or by importing an empty database.

Delete measurement or database elements.

This prompt window asks you to confirm deletion (YES).

Data loss 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.

Gossen Metrawatt GmbH 25

Page 26

7 Operation

Attention!

Note

Attention!

Note

Attention!

BAT

The protective foil on the two sensor surfaces (finger contacts) of the test plug must be removed to ensure reliable detection of touch voltages.

7.1 Power Supply

The instrument is powered by rechargeable batteries. The included Master Battery Pack (Z502H) or commercially available individual rechargeable or regular batteries can be used.

If at all possible use the included battery pack (Z502H) with sealed cells. This ensures that the complete set of rechargeable batteries is always replaced at the same time and that all batteries are inserted with correct polarity, in order to assure that they do not fail.

The included Z502H battery pack has already been inserted during initial startup (see condensed operating instructions).

7.1.1 Inserting or Replacing the Battery Pack (Z502H) or Commercially Available Individual (Rechargeable) Batteries

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

Commercially available, individual rechargeable or regular batteries must comply with the technical data (see page 10).

➭ Loosen the slotted screw for the rechargeable battery com-

partment lid on the back and remove the lid.

➭ Remove the depleted battery pack or commercially available

rechargeable or regular batteries.

➭ Insert the battery pack or commercially available rechargeable

or regular batteries into the battery compartment.

In the case of commercially available, individual rechargeable or regular batteries: 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 and damage to the instrument.

➭ Replace the lid and retighten the screw.

Dispose of the battery pack or commercially available, individual rechargeable or regular batteries in an environmentally sound fashion when their service life has nearly expired (approx. 80% charging capacity). See section 24, “Disposal and Environmental Protection”, on page 99.

7.1.2 Charging the Battery Pack (Z502H) in the Tester

If commercially available, individual rechargeable batteries are used, they must be charged externally. Do not use the Z502R charger to charge commercially available individual batteries. The quality of commercially available, individual rechargeable batteries cannot be checked and may result in overheating and thus deformation and explosion when charging them in the instrument.

Regular batteries may not be charged.

Use only the Z502R charger in order to recharge the Compact Battery Pack (Z502H) in the test instrument.

The Z502R charger is suitable for mains operation only!

Do not switch the test instrument on during charging. The charging process may otherwise be impaired.

➭ Verify that the battery pack (Z502H) is inserted, i.e. that com-

mercially available battery packs or batteries are not inserted.

➭ Insert the correct mains plug for your country into the charger

Z502R.

➭ Connect the Z502R charger to the test instrument with the

jack plug, and then to the 230 V mains with the interchangeable plug.

➭ Do not disconnect the charger from the test instrument until

the green LED (charged/ready) lights up.

If the rechargeable batteries or battery pack have not been used or recharged for a lengthy period of time (> 1 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.

7.2 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 menu has elapsed, the instrument is switched off automatically (see “Device Settings”, section 8).

Battery Test

A battery test is performed after switching the instrument on. If supply voltage has fallen below the permissible

lower limit, the pictograph shown at the right appears. “Low Batt!!!” is also displayed along with an icon.

The instrument does not function if the batteries have been depleted excessively, and no display appears.

Ensure adequate power supply by charging the rechargeable battery pack (Z502H/) or by inserting fully charged, commercially available rechargeable batteries or new batteries. See section 7.1, “Power Supply”, on page 26.

26 Gossen Metrawatt GmbH

Page 27

8 Instrument Settings

SETUP

LED and LCD test menu

Rotary switch balancing

Brightness/contrast menu

Calibration date

Display: date/time

Display: auto shutdown

of display illumination after 15 s.

of the tester after 60 s.

Time, language

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

Brightness/contrast submenu



Set time 

Default settings 

Language for user interface



3a 3b

Set date 

Duty cycle for display illumination / tester

Return to submenu

Display Illumination On-time

Time, On-Time and Default Settings

Menu Selection for Operating Parameters

LED tests LCD and acoustic signal tests

Test Instrument On-Time

No automatic shutdown, continuously on

DB MODE submenu



Current inspector

Firmware/software info  page 97

Brightness and Contrast Settings

Create

or select

inspector

(deletion via ETC only)

Distributor structures 

Gossen Metrawatt GmbH 27

Page 28

LED and LCD test menu

Rotary switch balancing

Brightness/contrast menu

Calibration date

Display: date/time

Display: auto shutdown

of display illumination after 15 s.

of the tester after 60 s. Time, language

and battery test menu

Return to main menu

Brightness/contrast submenu



Set time 

Default settings 

Language for user interface



3a 3b

Set date 

Duty cycle for display illumination / tester

Set time

Menu Selection for Operating Parameters

Set Time, Language, Acoustic Signal

Set date

Select time

Increase hours

Increase minutes

Decrease hours

Apply settings

Decrease minutes

Increase seconds Decrease seconds

Return to submenu

Select date

Decrease

day

Apply settings

month

Decrease year

Return to submenu

Increase

day

month

Increase

year

Current inspector

DB MODE submenu



Firm/software info  page 97

Brightness and Contrast Settings

Create or select inspector

(deletion via ETC only)

Distributor structures 

28 Gossen Metrawatt GmbH

Page 29

Significance of Individual Parameters

Note

Attention!

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.

LCD Illumination On-Time

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 icon.

SETUP

3 Make sure that the rotary switch is set to

The level mark to the left of the number should be aligned to the black function field with the respective rotary switch designation. The value of the number can be displayed within a range of -1 to 101 and should be between 45 and 55. In the case of -1 or 101, the rotary switch position does not match the measuring function shown at the display. If the displayed value is not within this range, readjust the position by pressing the edges readjustment.

readjust

softkey . A brief acoustic signal acknowl-

User Interface Language (CULTURE)

➭ Select the desired country setup with the appropriate country

code.

All structures, data and sequences are deleted when the language is changed!

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

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.

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.

4 Acknowledge by pressing the softkey with the rotary switch icon.

The display is then switched to the next measuring function.

5 Turn the rotary switch clockwise to the next measuring function (after

SETUP

comes

IN).

6 Repeat steps 3 through 5 until all rotary switch functions have

been tested, and if necessary readjusted.

7 Press ESC, in order to return to the main menu.

Submenu: Battery Level Query

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.

Measuring Procedure

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

All structures, data and sequences are deleted when the profile is changed!

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

If you haven’t 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.

All structures, data and sequences are deleted! Back up your structures, measurement data and sequences to a PC before resetting.

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

Gossen Metrawatt GmbH 29

Page 30

Adjusting Brightness and Contrast

Note

Jump back to

Increase brightness

Decrease brightness

Increase contrast

Decrease contrast

previous menu

Add a new inspector

Accept letter/character

Select letter/character

Delete letter/character Toggle: upper/lowercase,

vowel mutations & special chars.

Accept name

Select inspector

Accept inspector

DB-MODE – Display of the Database in the Text or ID Mode

Selecting, Adding or Deleting an Inspector

See also section 10.8 on page 39 regarding the entry of a text.

Creating Structures in the TXT MODE

The database in the test instrument is set to the text mode as a default feature and “TXT” appears in the header. You can create structure elements in the test instrument and label them in plain text, e.g. Customer XY, Distributor XY and Circuit XY.

Creating Structures in the ID MODE

You can work in the ID MODE as an alternative, in which case “ID” appears in the header. You can create structure elements in the test instrument and label them with any desired ID numbers.

Structures can be created in the test instrument in either the text mode or the ID mode. In contrast to this, designations and ID numbers are always assigned in the report generating program.

If no texts or ID numbers have been entered to the test instrument when creating structures, the report generating program creates the missing entries automatically. These can then be edited in the report generating program and transferred back to the test instrument if required.

(delete inspector via ETC only)

The inspector cannot be changed. If an inspector’s name is incorrect, it can be deleted and a new inspector can be created with the correct name. Changes are not retroactive. Deleted inspectors are retained for tests which have already been performed.

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9 Database

Note

9.1 Creating Distributor Structures, General

A complete distributor structure with data for electrical circuits and RCDs can be created in the test instrument. 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 a distributor structure in the test instrument. A distributor structure with up to 50,000 structure 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 Help > Getting Started (F1). The distributor structure is then transferred to the test instrument.

The test instrument and the PC must be connected with a USB cable in order to transfer structures and data.

The rotary selector switch may not be set to the “U” position during data transmission.

The following image appears at the display during transfer of structures and data.

9.3 Creating a Distributor Structure in the Test Instrument Overview of the Meanings of Icons used to Create Structures

Icons Meaning

Main

Sublevel

level

Memory Menu, Page 1 of 3

Cursor UP: scroll up

Notes regarding ETC

The following steps must be completed before using the software:

• Install the USB device driver (required for operation of the test instrument at a PC): GMC-I Driver Control software for installing the USB device driver can be downloaded from our website: https://www.gmc-instruments.de/services/download-center/

• Install ETC report generating software: The most up-to-date version of ETC can be downloaded free of charge from the mygmc page of our website as a ZIP file, if you have registered your test instrument: https://www.gmc-instruments.de/services/mygmc/

Cursor DOWN: scroll down

ENTER: Acknowledge selection. + – change to sub-level

(expand directory) or

– + change to main level

(close directory)

Display the complete structure designation (max. 63 characters) or ID number (25 characters) in a zoom window.

Temporarily switch back and forth between structure designation and ID number.

These keys don’t have any effect on the main setting in the setup menu (see “DB Mode” on page 30).

Hide the zoom window

Change display to menu selection

Memory Menu, Page 2 of 3

Add a structure element

9.2 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.

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Icons Meaning

Distributor

A check mark to the right of a structure element means that all measurements within the respective hierarchy have been passed. x: at least one measurement has not been passed. No symbol: measurement has not yet been performed.

Building

Customer

RCD

Circuit

Equipment

Same type of element as in the Windows Explorer: +: sub-objects available, display by pressing . –: sub-objects are displayed, hide by pressing .

Equipment

Meanings 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 structure element).

Selection: UP/DOWN scroll keys and  In order to add a designation to the selected

structure element, refer to the edit menu in following column.

Delete the selected structure element.

Show measurement data, if a measurement has been performed for this structure element.

Edit the selected structure 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.

Distributor Structure Symbology / Tree Structure

Continue searching.

Edit menu

Cursor LEFT: Select an alphanumeric character.

Cursor RIGHT: Select an alphanumeric character.

ENTER: accept an individual character.

Acknowledge entry

Scroll left



Scroll right



Delete character

Switching amongst different types of alphanumeric characters:

A Upper case letters

a Lower case letters

0 Numbers

@ Special characters

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9.3.1 Creating Structures (example for electrical circuit)

Note

Scroll up

Scroll down

Comfirm selection /

Display object

Nextpage

change level

or ID number

Create object

Delete object

VA: Show measurement data

Edit designation

Scroll up

Scroll down

Comfirm selection

Select character

Accept character

Delete character

Character selection:

✓Save object designation

A, a, 0, @

Select parameter

Parameter settings list

Acknowledge parameter selection

Acknowledge parameter setting

and return to page 1/3

Select parameter setting

in the database menu.

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 structure elements, referred to below as objects.

Selecting the Position at which a New Object will be Added

Use the  keys in order to select structure elements. Change to the sub-level with the  key. Go to the next page with the >> key

Entering a Designation

Enter a designation and then acknowledge it with ✓.

Acknowledge your entry with ✓and , because the entry will otherwise not be accepted.

Entering a Comment

Enter a comment and then acknowledge it with ✓.

Creating a New Object

Press the key in order to create a new object.

Select a new object from a list.

Acknowledge your entry with ✓ and , because the entry will otherwise not be accepted.

Setting Electrical Circuit Parameters

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 structure 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 specified by the structure in the test instrument, a warning is displayed when the change is saved (see error message on page 25).

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 8), the number of object types may be limited, and the hierarchy may be laid out differently.

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9.3.2 Searching for Structure Elements

Scroll up

Scroll down

Comfirm 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

Accept character

Delete character

Character selection:

✓ Save object designation

Continue searching

End search

Regardless of the currently selected object, the search is started at database.

Go to page 3/3 in the database menu.

After selecting text search...

If no further matches are found, the message shown above is displayed.

9.4 Saving Data and Generating Reports

Preparing and Executing a Measurement Measurements can be performed and stored to memory for each

structure 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 I

Upon completion of measurement, the  Floppy Disk softkey is displayed.

➭ Briefly press the Save Value key.

The display is switched to the memory menu or the structure view.

➭ Navigate to the desired memory location, i.e. to the desired

structure 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 9.3.1.

➭ Complete data storage by pressing the “STORE” key.

N

key.

... and entering the desired text (only full matches are found – no wild cards, case sensitive) ...

... the first match is displayed. Further matches can be found by selecting

the icon shown at the right.

Saving Error Messages (pop-ups)

If a measurement is ended without a measured value due to an error, the measurement can be saved along with the pop-up by pressing the “Save Value” key. The corresponding text is read out in ETC instead of the pop-up symbol. This only applies to a limited number of pop-ups (see below). Neither a symbol nor a text can be accessed in the test instrument’s database itself.

Alternative Storage Procedure

➭ The measured value can be saved to the last se-

lected object in the structure diagram by pressing and holding the Save Value key, without switching the display to the memory menu.

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Note

If you change the parameters in the measurement view,

Note

they’re not saved for the structure element. A measurement with changed parameters can nevertheless be saved to the structure 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

Data Evaluation and Report Generation with the Report Generating Program

All data, including the distributor structure, can be transferred to the PC and evaluated with the help of the report generating program. 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.

9.5 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 recognized 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.

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.

Continued Searching in General

Regardless of whether or not an object has been found, searching can be continued by pressing the key shown at the right:

– Object found: Searching is continued below the previously

selected object.

– 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)

The following functions are made possible with the help of a barcode printer:

• Read-out of ID numbers as barcodes – for quick and convenient acquisition for periodic testing

• Print out repeatedly occurring designations such as test object types encrypted as barcodes in a list, allowing them to be read in as required for comments

➭ Scrolling amongst measurements

is possible with the keys shown here:

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10 General Information on Measurements

Attention!

Note

10.1 Using Cable Sets and Test Probes

• Scope of delivery: 2-pole measuring adapter and cable for expansion into a 3-pole adapter (PRO-A3-II/)

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

• Optional accessory: KS24 cable set (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).

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.

10.2 Test Plug – Changing Inserts

The test plug can be fitted with various inserts (e.g. two-pole measuring adapter or country-specific plug insert).

In order to change inserts, unscrew the retaining ring until you can pull out the currently used insert. Then mount the desired insert and retighten the retaining ring.

(See overview in section 5.4 on page 8.)

10.3 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 protective conductor PE 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-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. 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.

Touch 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.

10.4 Automatic Settings, Monitoring and Shutdown

The test instrument automatically selects all operating conditions which it’s 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 UN and f

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

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

LED lights up red.

L/RL

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,

or Z

when the rotary selector switch is set to the Z position.

L-P E

L-N

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 section 7.2). 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 s 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!

10.5 Measured Value Display and Memory

The following items appear at the display panel:

• Measured values with abbreviations and units of measure

• Selected function

• Nominal voltage

• Nominal frequency

• Error messages

Measured values for automatic measuring sequences are stored and displayed as digital values until the next measurement sequence is started, or until automatic shutdown 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.

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

* For reliable detection of touch voltages, both sensor surfaces on the

test plug must be touched with unprotected fingers/palm, i.e. with direct skin contact (see also section 7).

• 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 touch current U

. Poor contact resistance at one of the contacts leads to

IN

and RCD/FI LEDs light up red as well.

L/RL

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one of the following displays depending upon poling of the

Note

Attention!

plug: – Display at the connection pictograph:

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

Voltage measuring path interrupted

Consequence: measurement is disabled

– Display at the connection pictograph:

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

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

See “LED Indications, Mains Connections and Potential Differences” on page 17.

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 touch voltage measurement without RCCB tripping (automatic Z are reversed.

measurement), insofar as N and PE

L-N

10.6 Help Function

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

• Wiring diagram

• Measuring range

• Nominal range of use as well as measuring and intrinsic uncertainties

• 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.

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10.7 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 settings menu. 6 The setting value is not permanently accepted for the respec-

tive measurement until

returned to the main 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

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.

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10.8 Freely Selectable Parameter Settings or Limit Values

Note

Select the EDIT menu.

Select value/U/M.

Accept value/U/M.

Delete character

✓ Save value (to list)

Select the EDIT+ menu.

Select value/U/M.

Accept value/U/M.

Delete character

✓ Save value (to list)

10.8.1 Changing Existing Parameters

Individual parameters can be changed for certain measuring functions, i.e. adjusted within predetermined limits.

The EDIT menu doesn’t appear until after switching to the right-hand column and selecting the editable parameter .

Example for RLO Measuring Function – Parameter: LIMIT RLO

1 Open the submenu for setting the desired parameter (no fig-

ure, see section 10.7).

2 Select the editable parameter – identified with the icon –

with the or  scroll key.

3 Select the edit menu by pressing the key.

10.8.2 Adding New Parameters

For certain measuring functions, additional values within predefined limits can be added in addition to the fixed values.

The EDIT+ menu doesn’t appear until after switching to the right-hand column.

Example for IN Measuring Function – Parameter: I

1 Open the submenu for setting the desired parameter

(no figure, see section 10.7).

Select the edit menu by pressing the key.

N

4 Select the respective characters with the left or right cursor

key. The character is accepted by pressing the  key. The value is acknowledged by selecting  key.

Observe the predefined limits for the new setting value. Enter any places to the right of the decimal point as well.

✓ and then pressing the

2 Select the respective characters with the LEFT or RIGHT cursor

key. The character is accepted by pressing the  key. The value is acknowledged by selecting  key. The new parameter is added to the list.

Observe the predefined limits for the new setting value. Enter any places to the right of the decimal point as well.

✓ and then pressing the

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10.9 2-Pole Measurement with Rapid or Semiautomatic Polarity

L1-N L2-N

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

N-PE L1-PE L2-PE L3-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

N-PE L1-PE L2-PE L3-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

N-PE L1-PE L2-PE L3-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

Reversal

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

• Voltage U

• Loop impedance Z

• Internal line resistance Z

• Insulation resistance R

LP-E

L-N

INS

Rapid 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.

N

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 after sav- ing.

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

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key at the

N

Page 41

11 Measuring Voltage and Frequency

Note

Select the Measuring Function

Switch Back and Forth 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).

11.1 Single-Phase Measurement Connection

11.1.2 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).

See section 10.9 concerning 2-pole measurement with rapid or semiautomatic polarity reversal.

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

S-PE

11.1.1 Voltage Between L and N (U and PE

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

N-PE

SCHUKO

L-N

L and PE

L-PE

) a

nd N

11.2 3-Phase Measurement (line-to-line voltage) and Phase Sequence

Connection

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

If you view the country-specific plug insert, e.g. SCHUKO, from the front, you’ll see two embossed letters, namely L and N. Automatic polarity reversal does not take place during voltage measurement. You can thus specify the terminal to which the phase is connected in the socket. If (mains) voltage is displayed for UL-PE, then the phase is located where L appears on the connector. If (mains) voltage is displayed for N-PE, then the phase is located where N appears on the connector.

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➭ Press softkey U3~.

Note

Clockwise Rotation

Counterclockwise Rotation

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: L1-L2-L3 at plug in clockwise direction as of PE socket

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

See section 6.4 regarding all indications for the mains connection test.

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.

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12 Testing RCDs

Attention!

Note

N

-------

N

(measurement up to 1000 ms)

The testing of residual current devices (RCDs) includes:

• Visual inspection

•Testing

• Measurement Use the test instrument for testing and measurement.

When testing systems with RCCBs, they may switch off. This may occur even though it’s not normally provided for by the test. 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 the test, precautions should therefore be taken to ensure that all data and programs are suitably backed up 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, computers, peripheral equipment or data bases when performing the tests.

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 permissible touch voltage value UL agreed upon for the respective system is not exceeded

This is achieved by means of:

• Touch voltage measurement 10 measurements with full-waves and extrapolation of I

• Substantiation of tripping within 400 ms or 200 ms with IN

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

N

RCD/FI Table Waveform

Differential Current

Suddenly occurring

Alternating current

Slowly rising

Suddenly occurring

Pulsating direct current

Slowly rising

Direct current

Direct current up to 6 mA

* only PROFITEST MTECH+, PROFITEST MXTRA

Correct RCD/RCCB Function

Typ e AC Type A/F Type B */

B+*

Type EV/

MI*

✔✔✔✔

✔✔✔

✔✔

✔

Test Standard

The following must be substantiated per IEC 60364-6: – Touch voltage occurring at nominal residual current may not

exceed the maximum permissible value for the system.

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

selective RCDs) at nominal residual current.

Important Notes

• The test instrument permits 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 0.1 V touch voltage 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 touch voltage UB, or may result in erroneous displays for measurements with rising current: Display = I

- I

bias current

• 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 verified by measuring breaking time.

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

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

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.

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Measurement With or Without Probe

Attention!

N

Nom. res. current: 10 … 500 mA

Type 1: RCD, SRCD, PRCD …

Nominal current: 6 … 125 A

Type 2*: AC , A , F

, B , B+

, EV, MI

* Types B, B+, EV, MI =

AC/DC sensitive

Phase displacement: 0°/180°

X times tripping current:

Negative/positive half-wave

Negative/positive direct current

1, 2, 5 (I

N

max. 300 mA)

Waveform:

Connection:

Without/with probe

System type:

TN/TT, IT

Touch voltage:

Time to trip:

< 25 V, < 50 V, < 65 V

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.

) 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 IEC 61557 / EN 61557.

12.1 Measuring Touch Voltage (with reference to nominal residual current) with ⅓ Nominal Residual Current and Tripping Test with Nominal Residual Current

Select Measuring Function

Connection

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

function (see also section 11.1 on page 41).

PROBE

Set Parameters for I

N

44 Gossen Metrawatt GmbH

Page 45

1) Measuring Touch 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 touch voltage U occurs at nominal residual current. This prevents tripping of the

IN

which

RCCB. This measuring method is especially advantageous, because

touch 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 Touch Voltage

➭

Press the

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

If the RCCB is not tripped at nominal residual current, the MAINS/NETZ LED blinks red (line voltage disconnected) and, amongst other values, time to trip t appear at the display panel.

If the RCCB is not tripped at nominal residual current, the RCD/FI LED lights up red.

key.



and earthing resistance RE

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

Start Measurement

Amongst other values, touch voltage U 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 earthing

IN

position.

Touch Voltage Too High

If touch voltage U residual current I U

LED lights up red.

L/RL

If the limit value for touch voltage is exceeded during the measurement process, U for Germany (65 V applies for Austria – standard: ÖVE/ÖNORM E 8001-1 section 5.3).

Safety shutdown: At up to 70 V, a safety shutdown is tripped within 3 s in accordance with IEC 61010.

Touch voltages of up to 70 V are displayed. If the value is greater than 70 V, U

IN

, which has been measured with 1/3 nominal

IN

and extrapolated to IN, is > 50 V (> 25 V), the

N

> 50 V (> 25 V), safety shutdown occurs

IN

> 70 V is displayed.

Limit Values for Permissible, Continuous Touch Voltage

The limit for permissible, continuous touch voltage is equal to U

= 50 V for alternating voltages (international agreement).

Lower values have been established for special applications (e.g. medical applications: U

If touch 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.)!

=25V).

Unintentional Tripping of the RCD due to Bias Current in the System Any bias current which might occur can be ascertained as described in section 18.1 on page 80 with the help of a current

clamp transformer. The RCCB may be tripped during the testing of touch voltage if extremely large bias currents are present within the system, or if a test current was selected which is too great for

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 or L3).

the RCCB. After touch voltage has been measured, testing can be performed

to determine whether or not the RCCB is tripped within the selected time limit values at nominal residual current.

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

Measurement of touch 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 consumers with EMC circuit, e.g. fre-

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 might not display any measured value (– – – ). If this message appears, switch all 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.

quency converters or PCs.

Gossen Metrawatt GmbH 45

Page 46

12.2 Special Tests for Systems and RCDs

Note

Attention!

Nom. res. current: 10 … 500 mA

Type 1: RCD, SRCD, PRCD …

Nominal current: 6 … 125 A

Type 2*: AC , A , F

, B , B+

, EV, MI

* Types B, B+, EV, MI =

AC/DC sensitive

Sinusoidal

Negative/positive half-wave

Waveform:

Connection:

Without/with probe

System type:

TN/TT, IT

Negative/positive direct current

Touch voltage:

Tripping limit values:

12.2.1 Testing Systems and RCCBs with Rising Residual Current (AC) for Type AC, A/F, B/B+ and EV/MI RCDs (PROFITEST MTECH+, PROFITEST MXTRA only)

Measuring Method

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

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

within the system for the testing of RCDs.

N

=25V or UL=50/65V,

Select Measuring Function

Connection

Start Measurement

Set Parameters for I

Measuring Procedure

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 I.

If touch voltage reaches the selected limit value (U

or 25 V) before the RCCB is tripped, safety shutdown occurs. The UL/RL LED lights up red.

Safety shutdown: At up to 70 V, safety shutdown is triggered within 3 s in accordance with IEC 61010.

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

If bias current is present within the system during measurement, it’s superimposed onto the residual current which is generated by the instrument and influences measured values for touch voltage and tripping current. See also section 12.1.

, the RCD/FI LED lights up red.

N

=65V, 50V

Evaluation

According to IEC 60364-6, rising residual current must, however, be used for measurements in the evaluation of RCDs, and touch voltage at nominal residual current IN must be calculated from the measured values. The faster, more simple measuring method should thus be taken advantage of (see section 12.1).

46 Gossen Metrawatt GmbH

Page 47

12.2.2 Testing Systems and RCCBs with Rising Residual Current

Note

N

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:

(AC) for Type B/B+ and EV/MI RCDs (PROFITEST MTECH+PROFITEST MXTRA)

In accordance with IEC 61557 / EN 61557, it must be substantiated that, with smooth direct current, residual operating current is no more than twice the value of rated residual current IN. A continuously rising direct current, beginning with 0.2 times rated residual current IN, must be applied to this end. If current rise is linear, rising current may not exceed twice the value of I period of 5 seconds.

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

within a

N

12.2.3 Testing RCCBS with 5 × IN

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’re 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.

Start Measurement

Select Measuring Function

Set Parameter – Start with Positive or Negative Half-Wave

Set Parameter – 5 Times Nominal Current

Gossen Metrawatt GmbH 47

The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: 1 × IN, 2 × I

N

Page 48

12.2.4 Testing of RCCBs

Note

N

Neg. half-wave

Pos. half-wave

Negative direct current

Positive direct current

Waveform:

X times tripping current:

50% IN*

* No-trip test

with 50% I

N

Type 1:

which are Suitable 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 Parameter – Positive or Negative Half-Wave

Set Parameter – Test With and Without “No-Trip Test”

12.3 Testing of Special RCDs

12.3.1 Systems with Type RCD-S Selective RCCBs

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

Measuring Method

The same measuring method is used as for standard RCCBs (see sections 12.1 on page 44 and 12.2.1 on page 46).

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 touch voltage.

Select Measuring Function

Set Parameter – Selective

Start Measurement

No-Trip Test

If, during the no-trip test which lasts for 1 second, the RCD trips too early at 50% IN, i.e. before the actual tripping test starts, the pop-up window shown at the right appears.

The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: double and five-fold nominal current is not possible in this case.

Tripping Test

➭ Press the IN key. The RCCB is tripped. Blinking bars appear

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.

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.

48 Gossen Metrawatt GmbH

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.

and earthing re-

Page 49

Note

Selective RCDs demonstrate delayed response charac-

N

Type 1:

teristics. Tripping performance is briefly influenced (up to 30 s) due to pre-loading during measurement of touch voltage. In order to eliminate pre-charging caused by the measurement of touch 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 permissible. The tripping test is executed immediately after once again pressing the I key.

N

Set Parameter – PRCD with Non-Linear Elements

12.3.2 PRCDs with Non-Linear Type PRCD-K Elements

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

The PRCD-K is equipped with undervoltage tripping, 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 permissible touch 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 12.3.3 on page 50.

measurements (UI greater

I

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 0100-410. 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.

Measuring Method

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

•Time to trip tA: tripping test with nominal residual current I (the PRCD-K must be tripped at 50% nominal current)

• Tripping current I for testing with rising residual current I

N

Start Measurement

Select Measuring Function

Connection

Gossen Metrawatt GmbH 49

Page 50

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

Note

N

Type 1:

N

Type 1:

Waveform:

Negative direct current

Positive direct current

180°: Start with neg. half-wave

0°: Start with pos. half-wave

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 means of touch voltage U touch voltage U of an otherwise error-free system, the PRCD more than likely contains a non-linear element.

N

measurement. If a

of greater than 70 V is measured at the PRCD

IN

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

12.3.4 Type G or R RCCB

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 which complies with device standard ÖVE/ÖNORM E 8601. Erroneous tripping is minimized thanks to its greater current carrying capacity and shortterm delay.

Select Measuring Function

Set Parameter – Type G/R (VSK)

Set Parameter – SRCD / PRCD

Start Measurement

Touch voltage and time to trip can be measured in the G/R-RCD 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 × 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

N

Set Parameter – Start with Positive or Negative Half-Wave

50 Gossen Metrawatt GmbH

Page 51

Set Parameter – 5 Times Nominal Current

Note

5 times tripping current

IN

= RE×IN = 1  × 30 mA = 30 mV = 0.03 V

The following restrictions apply to the selection of tripping current multiples relative to nominal current: 500 mA: 1 ×, 2 × IN

Start Measurement

12.4 Testing Residual Current Circuit Breakers in TN-S Systems 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 touch voltage is also 0.1 V, because the nominal residual current of 30 mA together with minimal loop resistance result in a very small voltage value:

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

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

N

adjusted.

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

Gossen Metrawatt GmbH 51

Page 52

12.5 Testing of RCD Protection in IT Systems with High Cable

Note

System type:

N

Time to trip

6mA 60 mA 200 mA

10.0 s

0.3 s

0.1 s

Capacitance (e.g. In Norway)

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

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

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

(IN, ta), and for earthing measurement (RE).

IN

which occurs in these systems can-

IN

Set Parameter – Select System Type

Start Measurement

12.6 Testing of 6 mA Residual Current Devices RDC-DD/RCMB (RDC-DD: PROFITEST MXTRA and PROFITEST MTECH+ only)

DIN VDE 0100-722 (Requirements for special installations or locations – Supplies for electric vehicles) specifies that all outlets for charging electric vehicles must be protected by a separate residual current device (RCD). Furthermore, additional protection is required for multiphase charging with smooth DC fault current. Either a type B RCD, an RDC-DD (residual direct current detecting device) or an RCMB (residual current monitoring module) can be used to this end.

Select Measuring Function

Set Parameter – Type RDC

Set Parameter – Time to Trip

The RDC-DD is tested with nominal residual currents of 6 to 200 mA.

Start Measurement

52 Gossen Metrawatt GmbH

Page 53

Set Parameter – Type RCMB

Note

Time to trip

300 mA 6mA 60 mA

0.04 s

10.0 s

0.3 s

Set Parameter – Time to Trip

The RCMB is tested with nominal residual currents of 6 to 300 mA.

Start Measurement

Gossen Metrawatt GmbH 53

Page 54

13 Testing of Breaking Requirements for Overcurrent Protective Devices, Measurement of Loop Impedance

Note

L-PE

Start

t1 t3

Measure

Operation

RCD Disabled!

/mA

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

and Determination of Short-Circuit Current (ZL-PE and ISC Functions)

Testing of overcurrent protective devices includes visual inspection and measurement.

Measuring Method

Loop impedance Z is 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 IEC 60364, so that reliable breaking of the protective device (fuse, automatic circuit breaker) is assured.

The measured loop impedance value must therefore be less than the maximum permissible value.

Tables containing permissible 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 25 from page 100. Maximum device error in accordance with IEC 61557 / EN 61557 has been taken into consideration in these tables. See also section 13.2.

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.

is measured and short-circuit current ISC

L-P E

may not fall below a predetermined

, the instrument uses a

L-P E

If the limit value for touch voltage is exceeded during this measurement process (> 50 V), safety shutdown occurs for Germany (65 V applies for Austria – standard: ÖVE/ÖNORM E 8001-1 section 5.3). The shutdown value can be adjusted within a range of 25 to 65 V (see section 10.8).

The test instrument calculates short-circuit current ISC 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, 230 and 400 V systems. This also applies between phases L-L at 500 V. If line voltage does not lie within these nominal ranges, the instrument calculates short-circuit current I vailing line voltage and measured loop impedance Z

and line voltage. Short-circuit

L-P E

based upon pre-

L-P E

Select Measuring Function

Connection Schuko / 3-Pole Adapter

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.

13.1 Measurements with Suppression of RCD Tripping (PROFITEST MTECH+, PROFITEST MXTRA only)

The test instruments make it possible to measure loop impedance in TN systems with type A , F and AC 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 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 during measurement and does not affect measurement results.

RCCBs (10, 30,

Loop impedance measurement in accordance with the procedure for the suppression of RCCB tripping is only possible with type A and F RCDs.

Bias Magnetization

54 Gossen Metrawatt GmbH

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 (neutral conductor N required).

Page 55

13.1.1 Measurement with Positive Half-Waves (PROFITEST

L-PE

Nom. current: 2 … 160 A, … 9999 A

Tripping characteristics:

Diameter*: 1.5 … 70 mm

Cable type*: NY…, H07…

Number of wires*: 2 … 10-wire

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

Sinusoidal

15 mA sinusoidal

Waveform:

DC-L and positive half-wave

Touch voltage:

DC-H and positive half-wave

2-pole

Measurement with country-specific

plug insert (e.g. Schuko)

Note

Selecting the test probe, as well as Lx-PE reference or AUTO, is only relevant with regard to report generation.

Semiautomatic measurement

See also section 10.9 regarding the AUTO parameter.

Polarity Selection

measurement

MTECH+, PROFITEST MXTRA only)

Measurement by means of half-waves plus direct current makes it possible to measure loop impedance in systems which are equipped with RCCBs.

In the case of DC measurement with half-waves, selection can be made between two variants:

DC-L: Reduced bias current

but faster measurement as a result

DC-H: Higher bias current providing more reliability with regard

to non-tripping of the RCD

Select Measuring Function

Set Parameters

Start Measurement

* Parameters used for report generation and do not influence the mea-

surement

Sinusoidal (full-wave) Setting for circuit without RCD 15 mA sinusoidal Setting for motor protection switch only

DC + half-wave Setting for circuit with RCD

Gossen Metrawatt GmbH 55

with small nominal current

Semiautomatic measurement (conductor reference change)

13.2 Evaluation of Measured Values

The maximum permissi-

ble loop impedance Z

which may be dis-

played after allowance has been made for the instrument’s maximum measuring and intrinsic uncertainties (under normal measuring conditions) can be determined with the help of Table 1 on page 100. Intermediate values can be interpolated.

The maximum permissible 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 101 based on measured short-circuit current (corresponds to IEC 60364-6).

L-

Page 56

Special Case: Suppressing Display of the Limit Value

Limit Value:

ISC < Limit Value

UL  R

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: key

The measured value can only be saved after it has been evaluated.

13.3 Settings for Calculating Short-Circuit Current – Parameter I

Short-circuit current ISC 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 ISC must be greater than tripping current Ia (see table 6 in section 25.1). The variants which can be selected with the “Limits” key have the following meanings:

:IaThe measured value displayed for ISC is used

:Ia+% The measured value displayed for Z

: 2/3 Z In order to calculate ISC, the measured value dis-

:3/4 ZZ

without any correction to calculate Z

rected by an amount equal to the test instrument’s

L-P E

is cor-

measuring and intrinsic uncertainties in order to calculate I

played for Z sponding to all possible deviations (these are

is corrected by an amount corre-

L-PE

defined in detail by IEC 60364-6 as Z

 2/3 × U0/Ia).

s(m)

 3/4 × U0/I

s(m)

Z Loop impedance I

Short-circuit current

U Momentary voltage at the test probes, “UN” is displayed if

deviates from nominal voltage by 10%

max.

f Frequency of the applied voltage,

“fN” is displayed if frequency f max. deviates from nominal frequency by 1%

Tripping current

(see data sheet for circuit breakers / fuses)

% Test instrument intrinsic error

56 Gossen Metrawatt GmbH

Page 57

14 Measuring Supply Impedance (Z

L-N

Diameters: 1.5 … 70 mm

Cable type: NY…, H07…

Number of wires: 2 … 10-wire

Tripping characteristics:

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

Semiautomatic Measurement

See also section 10.9 regarding the AUTO parameter.

L-PE relationships are not possible here.

Polarity Selection

Limit Value:

ISC < Limit Value

UL  R

Function)

L-N

Measuring Method (internal line resistance measurement)

Supply impedance Z method used for loop impedance Z

54). 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 13 on page

L-P E

Select Measuring Function

Connection Schuko

Connection 2-Pole Adapter

Set Parameters

Settings for Calculating Short-Circuit Current – Parameter I

Short-circuit current ISC 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 I greater than tripping current I variants which can be selected with the “Limits” key have the fol-

(see table 6 in section 25.1). The

must be

lowing meanings: I

:IaThe measured value displayed for ISC is used

:Ia+% The measured value displayed for Z

without any correction to calculate Z

rected by an amount equal to the test instrument’s

L-N

is cor-

measuring and intrinsic uncertainties in order to calculate I

: 2/3 Z In order to calculate ISC, the measured value dis-

played for Z sponding to all possible deviations (these are

is corrected by an amount corre-

L-N

defined in detail by IEC 60364-6 as Z

 2/3 × U0/Ia).

:3/4 ZZ

s(m)

 3/4 × U0/I

s(m)

Gossen Metrawatt GmbH 57

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).

Press the softkey shown at the left in order to switch

Z Loop impedance I

Short-circuit current

U Momentary voltage at the test probes, “UN” is displayed if

deviates from nominal voltage by 10%

max.

f Frequency of the applied voltage,

“fN” is displayed if frequency f

deviates from nominal

max.

frequency by 1% Tripping current

(see data sheet for circuit breakers / fuses)

% Test instrument intrinsic error

Page 58

Start Measurement

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, 230 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, permissible fuse types can be displayed by pressing the HELP key.

The table shows maximum permissible nominal current dependent on fuse type and breaking requirements.

Key: I

= breaking current, ISC = short-circuit current, IN = nominal

current, t

58 Gossen Metrawatt GmbH

= time to trip

Page 59

15 Earthing Resistance Measurement (Function RE)

Note

Attention!

Note

Start

Measure

Operation

RCD Disabled!

/mA

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

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 Se tu p

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 dissipation 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 earthing 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 earthing measurement)

In many cases, especially in extremely built-up areas, it’s 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 RB and phase conductor L are also included in the measurement results.

Measuring method (with probe) (mains powered earthing 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 5.5, “Technical Data”, on page 10 for pertinent values).

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

Gossen Metrawatt GmbH 59

where UE is between the earth electrode and the probe.

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

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

Probe resistance does not affect measurement results and may be as high as 50 k.

The probe is part of the measuring circuit and may carry a current of up to 3.5 mA in accordance with IEC 61557 / EN 61557.

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

RANGE Connection Measuring

Functions

xx  / xx k

10  / U

xx  / xx k *

* This parameter results in automatic selection of probe connection.

No probe measurement

No U Probe measurement

activated U

Probe measurement activated No U

Clamp measurement activated No U

measurement

is measured

measurement

Measuring method with suppression of RCD tripping (mains powered earthing measurement) (PROFITEST MTECH+, PROFITEST MXTRA only)

The test instrument makes it possible to measure earthing resistance in TN systems with type A , F and 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.

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 touch voltage.

Evaluating Measured Values

The maximum permissible 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 100. Intermediate values can be interpolated.

Page 60

15.1 Earthing Resistance Measurement – Mains Powered

Note

RER

The following types of measurement and connection are possible:

• 2-wire measurement via 2-pole adapter

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

• 3-wire measurement via 2-pole adapter and

probe

15.2 Earthing Resistance Measurement – Battery Powered, “Battery Mode” (PROFITEST MPRO & PROFITEST MXTRA only)

The 5 following types of measurement and connection are possible:

• 3-wire measurement via PRO-RE adapter

• 4-wire measurement via PRO-RE adapter

• 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

Select Operating Mode

• Selective measurement with clamp meter (4pole)

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

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.



The selected operating mode is displayed inversely: mains~ in white against a black background.

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

(R  AUTO, R = 10 k (4 mA), 1 k (40 mA), 100  (0,4 A), 10  (3.7 … 7 A), 10 /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 10 W range; separate display for small values).

)

Set Parameters

❏ Measuring range: AUTO

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

❏ Touch voltage: UL < 25 V, < 50 V, < 65 V, see section 10.8 re-

garding freely selectable voltage

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

2-pole adapter + clamp meter

❏ System type: TN or TT ❏ Test current waveform

See section 15.4 through section 15.6 regarding advisable parameters for the respective measurement and connection types.

N

Performing Measurements

See section 15.4 through section 15.6.

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 k, 20 kW, 2 kW, 200 W, 20 W ❏ 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: 3-pole, 4-pole, selective, 2-clamp,  ❏ Distance d (for measuring

See section 15.7 through section 15.11 regarding advisable parameters for the respective measurement and connection types.



): xx m

(Rho)

Performing Measurements

See section 15.7 through section 15.11.

60 Gossen Metrawatt GmbH

Page 61

15.3

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 electrode

Earthing resistance

Internal resistance

Earthing resistance through equipotential bonding systems

Probe resistance

PAS Equipotential bonding busbar RE Overall earthing resistance (R

In the event that it’s 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

15.4, “Earthing Resistance Measurement. Mains Powered – 3-Pole Measurement: 2-Pole Adapter with Probe”, on page 62. However, no probe is connected to the probe connector socket (17).

The resistance value R method also includes operational earth electrode resistance R

obtained with this measuring

ELoop

and resistance at phase conductor L. These values must be subtracted from 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 conductor). Supply impedance can be measured as described in section 14 from page 57. In accordance with IEC 60364, the operational earth electrode R 2 ”.

must lie within a range of “0  to

//RE2//water pipe)

(phase conductor + neutral

L-N

Set Parameters

❏ Measuring range: AUTO, 10 k (4 mA), 1 k (40 mA), 100 

(0.4 A), 10  (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

N

❏ Connection: 2-Pole adapter ❏ Touch 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

1) Measurement: Z

2) Measurement: Z

3) Calculation:

amounts to Ri = 2 × R

amounts to R

L-PE

RE1 amounts to Z

L-PE

ELoop

– ½ × Z

, where RB = 0

L-N

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

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

If the parameter is selected, steps 1 through 3 are executed automatically by the test instrument.

Select Measuring Function

Select Operating Mode

Gossen Metrawatt GmbH 61

Page 62

15.4 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 k (4 mA), 1 k (40 mA), 100  (0.4 A), 10  (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

N

❏ Connection: 2-pole adapter + probe ❏ Touch voltage: UL < 25 V, < 50 V, < 65 V, see section 10.8 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

Start Measurement

Connection

To be connected: 2-pole adapter and probe

62 Gossen Metrawatt GmbH

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

Page 63

15.5 Earthing Resistance Measurement, Mains Powered – Measuring Earth Electrode Potential (UE Function)

Note

UNRE

ELoop

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

Limit Value:

RE > Limit Value

UL  R

This measurement is only possible with a probe (see section

15.4). Earth electrode potential U the earth electrode between the earth electrode terminal and reference earth if a short-circuit occurs between the phase conductor and the earth electrode. The measurement of earth electrode potential is required by Swiss standard NIV/NIN SEV 1000.

is the voltage which occurs at

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 following equation:

The calculated value is displayed at the display panel.

. The instrument stores both

, and immedi-

ELoop

Select Measuring Function

Select Operating Mode Select Measuring Range

Set Parameters

❏ Measuring range: 10  / U ❏ Connection: 2-pole adapter + probe ❏ Touch voltage: UL < 25 V, < 50 V, < 65 V, see section 10.8

regarding 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.

To be connected: 2-pole adapter and probe

Gossen Metrawatt GmbH 63

Page 64

15.6 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 k (40 mA), 100  (0.4 A), 10  (3.7 … 7 A) In the case of systems with RCCBs, the DC offset and positive half-wave (DC + ) functions can be selected (only in the 10  range and only with the METRAFLEX P300).

❏ Connection: 2-pole adapter + clamp meter

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

❏ Touch voltage: UL < 25 V, < 50 V, < 65 V, for information regard-

ing freely selectable voltage see section 10.8

❏ Test current waveshape:

Sinusoidal (full-wave), DC offset and

positive half-wave (DC + )

❏ 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

Select Measuring Range at the Current Clamp Sensor

Test Instrument METRAFLEX P300 Clamp Test Instrument

Parameters

Transformation Ratio

1:1

1 V / A

01:10

100 mV / A

1:100

10 mV / A

Switches Measuring

Range

3 A (1 V/A) 3A 0.5 … 100 mA

30 A (100 mV/A) 30 A 5 … 999 mA

300 A (10 mV/A) 300 A 0.05 … 10 A

Measuring Range

Important Instructions for Use of the Current Clamp Sensor

• Use only the METRAFLEX P300 or the Z3512A current clamp

Connection

To be connected: 2-pole adapter, clamp and probe

64 Gossen Metrawatt GmbH

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 clamp sensor).

• 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.

• Before use, always inspect the electronics housing, the connector cable and the current sensor for damage.

• In order to prevent electric shock, keep the surface of the METRAFLEX clean and free of contamination.

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

Page 65

Start Measurement

Note

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.

Note regarding currently selected transformation at the tester

ratio

RE RE

: Selective earthing resistance measured via clamp

Clamp

: Total earthing resistance measured via probe,

Probe

comparative value

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

Gossen Metrawatt GmbH 65

Page 66

15.7 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 3-Pole (PROFITEST MPRO & PROFITEST MXTRA only)

Note

PROFITEST MPRO / PROFITEST MXTRA

 20 m  20 m

HESE

3-Wire Method

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 k, 20 k, 2 k, 200 , 20  ❏ Connection: 3-pin ❏ Transformer ratio: irrelevant in this case

Earthing Resistance Measurement According to the 3-Wire Method

❏ Distance d (for measuring

Start Measurement



): irrelevant in this case

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.

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.

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.

66 Gossen Metrawatt GmbH

Page 67

15.8 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 4-Pole (

Note

PROFITEST MPRO / PROFITEST MXTRA

HESE

 20 m  20 m

Earthing Resistance Measurement According to the 4-Wire Method

4-Wire Method

Select Measuring Function

Select Operating Mode

Set Parameters

❏ Measuring range: AUTO, 50 k, 20 k, 2 k, 200 , 20  ❏ Connection: 4-pin ❏ Transformer ratio: irrelevant in this case ❏ Distance d (for measuring

PROFITEST MPRO

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

PROFITEST MXTRA



): irrelevant in this case

only)

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.

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.

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.

Start Measurement

Potential Gradient Area

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

The measuring current from the earth tester which flows via the earth electrode and the auxiliary earth electrode causes a given potential distribution in the form of a potential gradient area, (cf. figure “Voltage Curve in Homogeneous Earth between Earth Electrode E and Auxiliary Earth Electrode H” on page 68.) 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 are 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) (cf. figure “Probe Distance S Outside of the Overlapping Potential Gradient Areas on the Perpendicular Bisector of Earth Electrode E and Auxiliary Earth Electrode H” on page 68.) 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

the auxiliary earth electrode and determine earthing resistance.

➭ Reposition the probe 2  3 m closer to the earth electrode,

and then 2  3 m 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.

Gossen Metrawatt GmbH 67

Page 68

However, if the three measured values for earthing resistance dif-

d = distance from 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

 = potential



Voltage Curve in Homogeneous Earth between Earth Electrode E and Auxiliary Earth Electrode H

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

Probe Distance S Outside of the Overlapping Potential Gradient Areas on the Perpendicular Bisector of Earth Electrode E and Auxiliary Earth Electrode H

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

HESE

Earthing Resistance Measurement for a Large Scope Earthing System

fer 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.

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 figure below). 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.

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

plotted graphically as depicted in “Earthing Resistance Measurement for a Large Scope Earthing System” on page 68. (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 dissipation resistance of the auxiliary earth electrode R With a measurement setup of this type, dissipation resistance of

, and the top value is

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.

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.

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 “Earthing Resistance Measurement for a Large Scope Earthing System” on page 68.

➭ Auxiliary earth electrode H is positioned as far as possible

from the earthing system.

➭ The area between the earth electrode and the auxiliary earth

electrode is sampled with the probe in equal steps of 5 meters each.

68 Gossen Metrawatt GmbH

Page 69

15.9 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Selective (4-pole)

Note

PROFITEST MPRO /PROFITEST MXTRA

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

General

Set Parameters at Tester

❏ Measuring range: 200 

After switching to selective measurement, the AUTO mea- suring range is activated automatically if a measuring range of greater than 200  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



): irrelevant in this case

Set Parameters at Current Clamp Sensor

❏ Current clamp sensor measuring range: see table below

Select 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.

Test Instrument Z3512A Clamp

Parameters

Transformation Ratio

1:1

1 V / A

01:10

100 mV / A

1:100

10 mV / A

Switches Measuring Range

1 A / × 1 1A

10 A / × 10 10 A

100 A / × 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

Select Measuring Function

Select Operating Mode

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

Gossen Metrawatt GmbH 69

Page 70

15.10 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Ground Loop Measurement

Note

PROFITEST MPRO / PROFITEST MXTRA

(with current clamp sensor and transformer, and pro-re measuring adapter as accessory) (PROFITEST MPRO & PROFITEST MXTRA only)

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 2-clamp measurement, switching to the AUTO range takes place automatically. It is then no longer

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.

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 EClip 2 generator current clamp

Connection

❏ Connection: 2 clamps ❏ Current clamp sensor transformer ratio:

❏ Distance d (for measuring

Set Parameters at Current Clamp Sensor

❏ Current clamp sensor measuring range: see table below

Select Measuring Range at the Current Clamp Sensor

Important Instructions for Use of the Current Clamp Sensor

• Use only the Z3512A current clamp sensor for this measure-

• Use the clamp in the permanently connected state. The sen-

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

• Make sure that the connector cables from the two clamps are

possible to change the range!

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



): irrelevant in this case

Test Instrument Z3512A Clamp

Parameters

Transformation Ratio

1:1

1 V / A

01:10

100 mV / A

1:100

10 mV / A

ment.

sor may not be moved during measurement.

distance from powerful extraneous fields.

laid separate from each other to the greatest possible extent.

Switches Measuring Range

1 A / × 1 1A

10 A / × 10 10 A

100 A / × 100 100 A

Start Measurement

➭ No probes or auxil-

➭ 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 trans-

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

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

70 Gossen Metrawatt GmbH

iary earth electrodes are required.

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

at the test instrument.

ferent heights with a clearance of at least 30 cm.

Page 71

15.11 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – Measurement of Soil Resistivity E

Note

ESH

dd d

Measurement of Soil Resistivity

+E (%)

-10

-20

-30

Jan. March May July Sept. Nov.

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

(PROFITEST MPRO & PROFITEST MXTRA only)

General

Select Measuring Function

Select Operating Mode

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

Set Parameters

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 71).

Soil resistivity is decisive with regard to the magnitude of an earth electrode’s dissipation resistance. Soil resistivity can be measured with the test instrument 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.

❏ Measuring range: AUTO, 50 k, 20 k, 2 k, 200 , 20  ❏ Connection:



(Rho)

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



: adjustable from 0.1 to 999

Start Measurement

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

Soil resistivity is calculated as follows:

E=2  d  R Where:  = 3.1416 d = distance in m between two earth spikes R = ascertained resistance value in (this value corresponds to R

determined with the 4-wire method)

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.

Geologic Evaluation

Except in extreme cases, the ground is measured down to a depth which is roughly equal to probe distance d. And thus it’s 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 not very conductive.

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

relative to season (soil temperature

Gossen Metrawatt GmbH 71

Page 72

A number of typical soil resistivity values for various types of

2 



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



-----

2 



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

D 1,13 F

=

2 



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

D 1,13 F

=

2 



4,5 a

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



 D



--------- -

D 1,57 J

=

ground are summarized in the following table.

Type of Soil Soil Resistivity

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



[m]

 10

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

3 Ring earth electrode

4 Mesh earth electrode

5 Ground plate —

Earth strip

(star type earth electrode)

Earth rod

(buried earth electrode)

Hemispherical earth

electrode

—

RA= dissipation resistance () 

= soil resistivity (m)

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: 

bxc, where b and c are the two

sides of the rectangle.

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

72 Gossen Metrawatt GmbH

Page 73

16 Measurement of Insulation Resistance

Attention!

Note

ISO

Voltage type: constant

Test voltag e: 15, 50, 100, 250, 325, 500, 1000 V

Voltage type: rising/ramp

Earth leakage resistance:

xxx V*

2-pole measurement (selection relevant for report genera- tion 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

Lower limit value:

INS

)

Enterable range:

> 40 V … < 999 V

Upper limit value:

Limit Value:

INS

< Limit Value

UL  R

INS

)

Insulation resistance may only be measured at voltagefree devices.

16.1 General Select Measuring Function

Connection

2 pole adapter or test plug

Breakdown Current for Ramp Function

In order to suppress the influence of parallel capacitances on the device under test when measurement is started, shutdown at the respective breakdown current I not occur until a minimum voltage of 5 V is exceeded.

Limit Values for Breakdown Voltage

lim

does

Set Parameters

* Freely adjustable voltage (see section 10.8)

Polarity Selection

* AUTO parameter (see section 10.9)

Gossen Metrawatt GmbH 73

The test instrument always measures insulation between the L and PE terminals. N and PE must be interrupted for systems without RCD.

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 k. In this way, incorrect connection can be avoided and interrupted measurement cables can be detected.

Limit Values for Constant Test Voltage

❏ 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 response voltage for voltage limiting components. After pressing the ON/START ▼ key, test voltage is continuously increased until the specified nominal voltage U which is measured at the test probes during and after testing. After measurement, this voltage drops to a value of less than 10 V (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

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

Specified maximum test voltage U down voltage which occurs is displayed for U

The constant test voltage function offers two options:

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

INS

is reached. U is the voltage

is reached and

or any triggering or break-

INS

Page 74

• After briefly pressing the ON/START ▼ key, specified test volt-

Note

age U

is read out and insulation resistance R

As soon as the measured value is stable (settling time may be

is measured.

INS

several seconds in the case of high cable capacitance values), measurement is ended and the last measured values for R and U the test probes during and after testing. After measurement,

are displayed. U is the voltage which is measured at

INS

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

• As long as you press and hold the ON/START ▼ key, test voltage U

is applied and insulation resistance R

not release the key until the measured value has settled in

is measured. Do

INS

(settling time may be several seconds in the case of high cable capacitance values). Voltage U, which is measured during testing, corresponds to voltage U START ▼ key, measurement is ended and the last measured values for R less than 10 V after measurement (see the section entitled

INS

and U

are displayed. U drops to a value of

INS

. After releasing the ON/

INS

“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 the 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 M to 10 M is available. The limit value is displayed above

LED lights up. A selection of limit values ranging from

L/RL

the measured value.

Start Measurement – Rising Test Voltage (ramp function)

Press briefly:

• The selected voltage limit is reached

• The selected current limit is reached or

• Sparkover occurs (spark gaps)

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

Testing 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 the current limit value in accordance with actual

requirements 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 current limit value in accordance with actual

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

Start Measurement – Constant Test Voltage

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

10.9), 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 ON/START ▼ key and runs automatically until one of the following events occurs:

Press and hold for longterm measurement:

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 con- stant test voltage function, only press and hold the start key ▼ until the display has become stable (if long-term measurement is required).

74 Gossen Metrawatt GmbH

Page 75

Special Condition for Insulation Resistance Measurement

Attention!

ISO

Limit Value:

RE(INS) > Limit Value

UL  R

EINS

Voltage type: constant

Test vol t ag e :

50, 100, 250, 325, 500, 1000 V*

Voltage type: rising/ramp

Earth leakage

* Freely adjustable voltage (see section 10.8)

resistance:

Insulation resistance can only be measured at voltagefree objects.

If measured insulation resistance is less than the selected limit value, the UL/RL LED lights up.

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!

Do not touch the instrument’s terminal contacts during 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 approximately 1 mA at a voltage of 1000 V. The resultant perceptible shock may lead to injury (e.g. resulting from a startled reaction etc.).

 25 V is present within the system,

Discharging the Device Under Test

16.2 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

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’s automatically discharged by the instrument after measurement has been completed. Contact with 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!

Evaluating 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 100. These values take maximum device error into consideration (under nominal conditions of use). Intermediate values can be interpolated.

Connection and Test Setup

Gossen Metrawatt GmbH 75

➭ 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).

Page 76

Start Measurement

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

76 Gossen Metrawatt GmbH

Page 77

Attention!

Note

ROFFSET: ON  OFF

Polarity: +/– to PE

with ramp sequence

Limit Value:

RLO > Limit Value

UL  R

Measuring Low-Value Resistance of up to 200 (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-resistance may only be measured at voltage-free objects.

Select Measuring Function

Connection

via 2-pole adapter only!

❏ ROFFSET ON/OFF

– Compensation for Measurement Cables up to 10 

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

➭ Switch R

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N.

First of all, an intermittent acoustic warning is generated and a blinking message appears, in order to prevent inadvertent deletion of a previously saved offset value.

➭ Start offset measurement by pressing

the triggering key once again or abort offset measurement by pressing the ON/

START ▼

OFFSET from OFF to ON. Roffset = 0.00  appears in the

key

(in this case =

If offset measurement is stopped upon appearance of a pop-up error window indicating Roffset > 10  or a differ- ence between RLO+ and RLO– of greater than 10%, the last measured offset value is retained. Inadvertent deletion of a previously ascertained offset value is thus practically ruled out. The respectively smaller value is otherwise stored to memory as an offset value. The maximum offset value is 10.0 . Negative resistances may result due to the offset value.

ESC

Set Parameters

Measuring ROFFSET

The ROFFSET x.xx  message now appears in the footer at the display, where x.xx can be a value between 0.00 and 10.0. This value is subtracted from the actual measuring results for all subsequent R ments, if the R

OFFSET must be redetermined in the following cases:

• After switching to a different polarity option

• After switching from ON to OFF and back again The offset value can be deliberately deleted by switching ROFFSET

from OFF to ON.

OFFSET ON/OFF key has been set to ON.

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

measure-

❏ Type / Polarit y

Gossen Metrawatt GmbH 77

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 measured values occur which are above this limit value, the red UL/RL LED lights up. Limit values can be selected within a range of 0.10  to

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

Page 78

17.1 Measurement with Constant Test Current

Attention!

Note

Start Measurement

Press and hold for longterm measurement

Measuring Low-Value Resistance Measurement cable and 2-pole measuring adapter resistance is compensated automatically thanks to the 4-wire method and thus doesn’t effect measurement results. However, if an extension cord 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 large conductive component – Contact resistance

The test probes should always be in contact with the device under test before the Start key If the DUT is energized, measurement is disable as soon as it’s contacted with the test probes. If the start key 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 R

Polarity Selection Display Condition

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

 Pole to PE

▼ is pressed first and the DUT is contacted with

RLO Where RLO  10% RLO+

RLO–

▼ is activated.

Where RLO > 10%

Automatic Polarity Reversal

After the measuring sequence has been started, the instrument performs the 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 ON/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 Measured Values

See Table 4 on page 100.

Calculation of Cable Lengths for Common Copper Conductors

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

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).

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 in 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.

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 ON/START ▼ key as long as necessary for the measurement.

78 Gossen Metrawatt GmbH

Page 79

17.2 Protective Conductor Resistance Measurement with Ramp Sequence

Note

Measuring Phase Demagnetizing

and Waiting Time

Result

Time [s]

Rising Phase

Test C ur re n t [ A]

01 3 6

0.25

Before Polarity ReversalorRestart

Representation of Measuring and Waiting Times for Protective Conductor Resistance Measurement at PRCDs with the PROFITEST MXTRA

– Measurement at PRCDs with Current-Monitored Protective Conductor using the PROFITEST PRCD Test Adapter as an Accessory ( PROFITEST MXTRA only)

Application

Protective conductor current is monitored for certain types of PRCDs. Direct activation or deactivation of the test current required for protective conductor resistance measurements of at least 200 mA results in tripping of the PRCD and thus to interruption of the protective conductor connection. Protective conductor measurement is no longer possible in this case.

A special ramp sequence for test current activation and deactivation in combination with the PROFITEST PRCD test adapter permits protective conductor resistance measurement without tripping the PRCD.

Ramp Function Time Sequence

Due to the physical characteristics of the PRCD, measuring times for this ramp function amount to several seconds.

If test current polarity is revered, additional waiting time is also required during polarity reversal. This is programmed into the test sequence in the “automatic polarity reversal” operating mode.

Reverse polarity manually, e.g. from “+pole with ramp” to “-pole with ramp” . The test instrument then detects the reversal of current flow direction, stops measurement for the required waiting time and simultaneously displays a corresponding message (see figure at right).

Connection

➭ Read the operating instructions for the PROFITEST PRCD

adapter, in particular section 4.1. It includes connection instructions for offset measurement and for protective conductor resistance measurement.

Selecting the Polarity Parameter

➭ Select the desired polarity parameter with ramp.

Measuring ROFFSET

➭ Perform offset measurement as described on page 77, in

order to assure that the test adapter’s connector contacts are not included in the measurement results.

The offset is only retained in memory until the polarity parameter is changed. If measurement is performed with manual polarity reversal (+pole or -pole), the offset measurement has to be repeated in both polarities before each measurement.

Measuring Protective Conductor Resistance

➭ Determine whether or not the PRCD is activated. If not, acti-

vate it.

➭ Perform protective conductor measurement as described in

section 17.1 above. Start the test sequence by briefly pressing the ON/START ▼ key. The predetermined duration of the measuring phase can be extended by pressing and holding the ON/START ▼ key.

Start Measurement

PRCD Tripping due to Poor Contacting

Good contact must be assured between the test probes at the 2pole adapter and the device under test or the sockets at the PROFITEST PRCD test adapter during measurement. Interruptions can result in considerable test current fluctuation which causes the PRCD to trip under unfavorable conditions.

If this is the case, tripping of the PRCD is automatically detected by the test instrument and indicated by a corresponding error message (see figure at the right). In this case as well, the test instrument automatically takes subsequently required waiting time into account before you can reactivate the PRCD and start the measurement over again.

Gossen Metrawatt GmbH 79

The symbol shown at the right appears during the magnetization phase (rising curve) and the subsequent measuring phase (constant current).

If measurement is aborted already during the rising phase, no measurement results can be ascertained or displayed.

After measurement, the demagnetization phase (falling curve) and subsequent waiting time are indicated by the inverted symbol shown at the right. No new measurements can be started during this time.

Measurement results cannot be read and measurement with the same or another polarity cannot be started until the symbol at the right appears.

Page 80

18 Measurement with Accessory Sensors

Attention!

SENSOR

Clamp

output range

Limit Value:

I < and I > Limit Value

UL  R

18.1 Current Measurement with Current Clamp Sensor

Bias, leakage and circulating current up to 1 A, as well as leakage current up 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 Gossen Metrawatt 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

Select Measuring Range at the Current Clamp Sensor

Tes t

Instrument

Transforma-

tion Ratio

Parameter

1:1

1 V / A

01:10

100 mV / A

1:100

10 mV / A

1:1000

1 mV / A

WZ12C Switch

1 mV / mA

— x 100 [mV/A] — 0 … 10 A

— x 10 [mV/A] — 0 … 100 A

1 mV / A x 1 [mV/A]

Clamp Meters Test

Z3512A

Switch

x 1000

[mV/A]

WZ12C

Measuring

Range

1 mA …

15 A

1 A …

150 A

Z3512A

Measuring

Range

0 … 1 A

0 … 1000 A

Instrument

Measuring

Range

5 …

999 mA

0.05 … 10 A

0.5 … 100 A

5 …

150A/999A

Specifying limit values results in automatic evaluation at the end of the measurement.

Connection

Start Measurement

Test Instrument Clamp Test

Transformation Ratio

Parameter

1:1

1 V / A

01:10

100 mV / A

1:100

10 mV / A

80 Gossen Metrawatt GmbH

METRAFLEX P300

Switch

3 A (1 V/A) 3A 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

METRAFLEX P300

Measuring Range

Instrument

Measuring

Range

Press the OK key to stop the measurement.

Page 81

19 Special Functions – EXTRA Switch Position

EXTRA

Select the EXTRA Switch Position

Overview of Special Functions

Softkey Meaning / Special

Function

Voltage drop measurement

U function Standing surface

insulation impedance

function

Meter startup test

kWh function Leakage current

measurement

function

Insulation monitor test

IMD function Residual voltage

test

Ures function Intelligent ramp

ta + Ifunction

Section / Page

PROFITEST MBASE+

PROFITEST MTECH+

PROFITEST MPRO

PROFITEST MXTRA

section

✓

19.1 on page 82

section

19.2 on page 83

section

19.3 on page 84

section

19.4 on page 85

section

19.5 on page 86

section

19.6 on page 88

section

19.7 on page 89

✓✓✓✓

———

Selecting Special Functions

The list of special functions is accessed by pressing the uppermost softkey. Select the desired function with the appropriate icon.

✓

section

19.8 on page 90

RCM residual current monitor

———

RCM function

✓

section

19.9 on page 91

Testing of electric vehicle operating statuses at charging

—

✓

stations per IEC 61851-1

✓

section

19.10 on page 92

Documentation of fault simulations at PRCDs with the PRO-

———

FITEST PRCD adapter

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19.1 Voltage Drop Measurement (at ZLN) – U Function

Note

Nominal current: 2 … 160 A

Polarity selection: Lx-N

Diameters: 1.5 … 70 mm

Cable type: NY…, H03… - H07…

Number of wires: 2 … 10-wire

Tripping characteristics: B, L

Limit Value:

U % > Limit Value

UL  R

U

Red

Significance and Display of U (per IEC 60364-6)

Voltage drop from the intersection of the distribution network and the consumer system to the point of connection of an electrical power consumer should not exceed 4% of nominal line voltage.

Calculating voltage drop (without offset): U = Z

L-N

Calculating voltage drop (with offset): U = (Z

L-N

U in % = 100 × U / U See also section 14 regarding the measurement procedure and

connection.

(electrical outlet or device connector terminals)

× nominal current of the fuse

– Z

) × nominal current of the fuse

OFFSET

L-N

Connection and Test Setup

Set Parameters

Measurement Without OFFSET

Proceed as follows:

➭ Switch OFFSET from ON to OFF.

Determine OFFSET (in %).

Proceed as follows:

➭ Switch OFFSET from OFF to ON. U ➭ Connect the test probe to the point of common coupling

(measuring device / meter).

➭ Start measurement of offset with I

First of all, an intermittent acoustic warning is generated and a blinking message appears, in order to prevent inadvertent deletion of a previously saved offset value.

➭ Start offset measurement by pressing

the triggering key once again, or abort offset measurement by pressing the

ON/START ▼ key (in this case ESC).

OFFSET = 0.00% is displayed.

If nominal current IN is changed by U value is automatically adjusted.

OFFSET

, the offset

Set Limit Values

U

OFFSET x.xx % is displayed and x.xx can be a value within a

range of 0.00 to 99.9%. An error message appears in a pop-up window

if Z exceeds 9.99

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: U < 3%

VDE Limit value per DIN VDE 0100-520: U < 4%

NL Limit value per NIV: U < 5%

82 Gossen Metrawatt GmbH

between the measuring device and the consuming device

between the distribution network and the consuming device (adjustable up to 10% in this case)



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19.2 Measuring the Impedance of Insulating Floors and Walls

Note

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 Setup

Start Measurement

Evaluate Measured Value

The measured value has to be evaluated after measurement has been completed:

Use the measuring setup described in section 16.2 (triangular 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 × 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 k at any given point. If the measured value is greater than 30 M, 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 101 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.

> 30.0M always appears at the dis-

Save measured value

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19.3 Testing Meter Startup with Earthing Contact Plug

Note

NOT OK

– kWh Function

Energy consumption meters can be tested for correct startup with this function.

Connection L – N Earthing Contact Plug

Start Measurement

The measured value cannot be saved to memory and included in the test report until it has been evaluated.

Save measured value

Special Case

Startup 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 startup 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 startup 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.

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19.4 Leakage Current Measurement with PRO-AB Leakage

Attention!

Note

Current Adapter as Accessory – I (PROFITEST MXTRA only)

Function

Application

Measurement of touch voltage in accordance with DIN VDE 0107, part 10, as well as continuous leakage and patient auxiliary current per IEC 62353 (VDE 0750-1) / IEC 601-1 / EN 60601-1, is possible using the PRO-AB leakage current measuring adapter as an accessory with the test instrument.

As specified in the standards listed above, current values of up to 10 mA can 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 including transformation ratios of 10:1 and 1:1. In the 10:1 range, voltage dividing takes place at the same ratio.

Connection and Test Setup

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 test instrument (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 Procedure

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).

Testing the PRO-AB Adapter

The adapter should be tested before use and at regular intervals (see adapter operating instructions).

The measurement can be started or stopped by pressing the ON/ START ▼ key. Leakage current measurement is a long-term mea- surement, i.e. is continues until it’s stopped by the user. The momentary measured value is displayed continuously during measurement.

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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19.5

Conductor

Relationship:

Testing Insulation Monitoring Devices – IMD Function (PROFITEST MXTRA only)

Application

Insulation monitoring devices (IMDs) or earth fault detection systems (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 ▼ key, 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 again

min

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

Resistance RSTART (3)

Numerous parameters are available for setting resistance RSTART, with which measurement is begun.

Conductor Relationship / Resistance Range (2)

– Conductor relationship: The corresponding conductor relation-

ship can be selected for documentation of the measuring point.

– Resistance range: A range of values can be selected for testing

the display of resistance at the IMD.

The parameter is set as a percentage with reference to the resistance momentarily introduced by the test instrument.

Upper and lower limit values are displayed in the measuring view.

When selecting test resistance, don’t forget that an excessively high test current could damage sensitive system components.

Set Parameters

Measuring Procedure (1)

There are two ways to conduct the test: – MAN: Resistance is changed manually by tapping the respec-

tive softkeys.

– AUTO: Resistance is changed automatically every 2 seconds

beginning with R

START.

Measuring Procedure

➭ Set the parameters. ➭ Start: Press the ON/START ▼ key. ➭ A resistance is introduced between the phase and protective

conductors and time measurement is started.

➭ Manual test MAN + –: press the or key to increase

or reduce test resistance R

➭ Automatic test AUTO: the resistance value is changed automati-

cally.

➭ Time to trip ta is restarted each time resistance is changed. ➭ Press I ➭ In order to end measurement, press the ON/START ▼ key as

soon as the IMD indicates that insulation resistance has been fallen short of.

➭ Display of measured values ➭ Evaluation query: Measurement OK? ➭ If evaluation is NOT OK: the UL/RL LED lights up red. ➭ Save: by pressing the soft key.

in order to change the conductor relationship.

L-PE.

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Measurement can be

NOT OK

aborted by pressing the ON/START ▼ or ESC key.

The following measured values are displayed:

–

RL-PE: Active test resistance with upper and lower limit values

– ta: Response time (during which momentary resistance is

applied until the measurement is ended)

- R

– R

min

with reference to the number of possible resistances

– U

L1PE

conductor L1 and protective conductor PE

– U

L2PE

conductor L2 and protective conductor PE

– U

L1L2

conductors L1 and L2

– I

LPE

: Status display indicating momentary resistance

max

: Momentary voltage at the test probes between phase

: Test current flowing through the active resistance

– f: Frequency of the applied voltage

Evaluation

In order to evaluate the measurement, it must be stopped. This applies to manual as well as automatic measurement. Press the ON/START ▼ or ESC key to this end. The stopwatch is stopped and the evaluation window appears.

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 9.4).

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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19.6 Residual Voltage Test – U

Note

Limit Value:

U % > Limit Value

UL  R

U

only)

Function (PROFITEST MXTRA

res

Application

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 than 60 V is applied during operation.

Testing for the absence of voltage is performed as follows with the test instrument by means of a voltage measurement which involves the measurement of discharge time: 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 U 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.

after 5 seconds and

res

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 permissible discharge time is 1 second!

Limit Values

Set Limit Values

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19.7

Nom. res. current: 10 … 500 mA

Type 1: RCD, SRCD, PRCD …

Nominal current: 6 … 125 A

Type 2: AC , A/F , B

* Type B = AC/DC sensitive

Touch voltage:

< 25 V, < 50 V, < 65 V

Intelligent Ramp – ta+I (

PROFITEST MXTRA



only)

Function

Application

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% I 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. Measured quantities are acquired with reduced accuracy.

and tA is the simultaneous measurement of

N

)

N

). This

N

Start Touch Voltage Measurement

Start Tripping Test

Connection

Set Parameters

The measurement sequence can be broke off prematurely at any time by pressing the ON/START ▼ key.

Measurement Results

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19.8 Testing Residual Current Monitors

Nom. res. current: 10 … 500 mA

Waveform:

Nominal current: 6 … 125 A

Typ e: A , B *

* Type B = AC/DC sensitive

X times tripping current:

Connection: with/without probe

System type: TN/TT, IT

Touch voltage:

< 25 V, < 50 V, < 65 V

– RCM Function ( PROFITEST MXTRA only)

General

Residual current monitors (RCMs) monitor residual current in electrical 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.

N

and

Connection

Measure Touch Voltage

No-Trip Test with ½ × I

and 10 s



Set Parameters for I

After 10 seconds have elapsed, no residual current may be indicated. The measurement must then be evaluated. 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 × I

N

– Measurement of Signal Response Time (Stopwatch Function) with Residual Current Generated by the Test Instrument

Measurement must be stopped manually by pressing the ON/ START ▼ or I

in order to document tripping time.

90 Gossen Metrawatt GmbH

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.

key immediately after indication of residual current,

N

Page 91

19.9 Checking the Operating Statuses of Electric Vehicles at Charging Stations per IEC 61851 ((PROFITEST MTECH+ & PROFITEST MXTRA)

A charging station is a facility designed to charge electric vehicles in accordance with IEC 61851-1, and is equipped with essential elements including a plug connector, conductor protection, an RCD, a circuit breaker and a safety communication device (PWM). Depending on where it’s used, other function modules may be added, for example for mains connection and metering.

Selecting the Adapter (test box)

Simulation of Operating Statuses per IEC 61851-1 with the MENNEKES Test Box

(Statuses A through E) The MENNEKES test box is used exclusively to simulate the vari-

ous operating statuses of a fictitious electric vehicle connected to a charging station. Settings for the simulated operating statuses can be found in the operating instructions for the test box.

The simulated operating statuses can be saved to as a visual inspection and documented in the report generating program.

Select the respective status to be checked with the

SECLECT STATUS key at the test instrument.

Status C – non-gassing vehicle detected

• Vehicle is ready for charging / power is connected

• Voltage between PE and CP: +6 V / -12 V

Status D – gassing vehicle detected

• Vehicle is ready for charging / power is connected

• Voltage between PE and CP: +3 V / -12 V

Status A – charging cable connected to charging point only

• CP signal is activated.

• Voltage between PE and CP is 12 V.

Status B – charging cable connected to charging point and vehicle

• Charging cable is locked into place at the charging point and

the vehicle.

• Vehicle is not yet ready for charging.

• Voltage between PE and CP: +9 V / -12 V

Status E – cable is damaged

• Short-circuit between PE and CP

• Charging cable is unlocked at the charging point.

• Voltage between PE and CP is +0 V.

Semi-Automatic Changing of Operating Statuses

As an alternative to manual status changing via the parameters menu for the SECLECT STATUS softkey at the test instrument, quick and convenient switching amongst the statuses is also possible. The AUTO status parameter has to be selected to this end. After responding to the visual inspection prompt and saving the results, automatic switching to the next status ensues – the 01/05 key display corresponds to A/E (01 = A, 02 = B, 03 = C, 04 = D, 05 = E).

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

key at the test

N

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19.10 PRCD – Test Sequences for Documenting Fault Simula-

Attention!

tions at PRCDs with the PROFITEST PRCD Adapter (PROFITEST MXTRA only)

The PROFITEST PRCD test adapter can be used in combination with the test instrument.

Read the respective operating instructions before using the PROFITEST PRCD.

Measurements with the PROFITEST PRCD connected to the test instrument:

• Measurement of the PRCD’s insulation resistance using the test instrument’s R

• Measurement of the PRCD’s protective conductor resistance using the test instrument’s RLO function. Please note that the protective conductor measurement is a modified RLO measurement with ramp sequence for PRCDs (seesection 17).

• Tripping test with nominal residual current using the test instrument’s I

• Measurement of time to trip using the test instrument’s I function (see section 12.3).

• Varistor test for PRCD-K: measurement via ISO ramp (see section 16).

function (see section 16).

INS

function (see section 12.3).

N

19.10.1 Fault Simulation

The procedure for the PROFITEST PRCD, including the procedure with the device under test, is described in the operating instructions for the PROFITEST PRCD. This section describes the procedure for the test instrument.

Procedure

➭ Prepare error simulation at the PROFITEST PRCD. Refer to

the operating instructions for the PROFITEST PRCD.

➭ Select the test sequence at the test instrument. ➭ Execute each of the test sequence steps at the PROFITEST

PRCD and document evaluation and assessment at the test instrument.

Select the PRCD to be Tested

Testing performed by simulating faults is carried out without connection to the test instrument, but it’s accompanied and documented by the test instrument. The test sequence is opened in the test instrument to this end and the specified steps are executed at the PROFITEST PRCD. Afterwards, evaluation and assessment of each test step (OK or not OK) is performed at the test instrument for later documentation.

There are three preset test sequences: – PRCD-S (single-phase / 3-pole): 11 test steps – PRCD-K (single-phase / 3-pole): 4 test steps – PRCD-S (3-phase / 5-pole): 18 test steps

Interaction Between PROFITEST PRCD and Test Instrument

Switch Position at

Display at Test Instrument

Test Step Icon

Meaning

PROFITEST PRCD

ON 1~ON

ON 3~ON

BREAK Lx

Lx <-> PE

Lx <-> N

PE-U

EXT

Uext -> PE

PROBE

PRCD-Ip

—AUTOAUTO

Single-phase PRCD activated

3-phase PRCD activated

Interrupted phase

Wires reversed between phase conductor and PE or neutral conductor

PE to phase

Contact ON key on PRCD with probe

Protective conductor current measurement with current clamp transformer

Semi-automatic change of fault simulations

The test steps are displayed at the test instrument. Their meanings and the associated switch positions at the PROFITEST PRCD are listed in the above table.

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Overview of Test Sequences and their Test Steps

PRCD-S, single-phase: 11 test steps

Selection Examples, PRCD-S Test Sequence (single-phase) – 11 Test Steps

Simulation of Interruption (steps 1 to 6)

PRCD-S, 3-phase: 18 test steps

PRCD-K, single-phase: 5 test steps

Reversed Conductor Simulation (step 7)

Simulation of PE to Phase (step 8)

Contact ON Key at PRCD with Probe (step 10)

Measurement of Protective Conductor Current with a Current Clamp Transformer (step 11)

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Selection Examples, PRCD-S Test Sequence (3-phase) – 18 Test Steps

Simulation of Interruption (steps 1 to 10)

Reversed Conductor Simulation (steps 11 to 16)

Semi-Automatic Changing of Fault Simulations (Statuses)

As an alternative to manual status changing via the parameters menu for the respective PRCD selection at the test instrument (PRCD-S 1~, PRCD-K 1~ or PRCD- S3~), quick and convenient switching amongst the fault simulations is also possible. The AUTO status parameter has to be selected to this end. After responding to the visual inspection prompt and saving the results, automatic switching to the next fault simulation ensues.

Skipping Test Steps

Test steps can be skipped during fault simulation by pressing the

key at the test instrument or the test plug.

N

Simulation of PE to Phase (step 17)

Measurement of Protective Conductor Current with a Current Clamp Transformer (step 18)

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20 Test Sequences (Automatic Test Sequences)

AUTO

2 3 4

5 6 7

109

11 12

Select the utilized test instrument.

– AUTO Function

Select AUTO Switch Position at the Test Instrument

With the rotary switch in the AUTO position, all of the test sequences in the device are displayed.

If there aren’t any test sequences in the instrument, NO DATA appears.

20.1 General (test sequence layouts)

If the same sequence of tests will be run frequently (one after the other with subsequent report generation), for example as specified in the standards, it’s advisable to make use of test sequences.

Automated test sequences can be compiled from manually created individual measurements with the help of the test sequence function.

A test sequence consists of up to 200 individual steps, which are executed one after the other. Fundamentally, differentiation is made amongst three types of individual steps:

•Note (Visual Inspection test step) Test sequences are inter- rupted when a pop-up message is displayed for the inspector. The test sequences is not resumed until the message has been acknowledged. Sample Message Before Insulation Resistance Measurement “Disconnect the device from the mains!”

• Visual inspection, testing and report generation: The test sequence is interrupted when a passed/failed evaluation is displayed. The comment and the results of the evaluation are saved to the database.

• Measurement (“User-Evaluated Measurement” test step): same as individual measurements with instruments with storage and parameters configuration

20.2 Creation of Test Sequences with ETC

The test sequences are created at the PC with the help of ETC software, and are then transferred to the test instrument.

Measurement parameters are also configured at the PC. However, parameters can be changed at the test instrument during the test sequence before the respective measurement is started.

When the test step is started once more, the parameter settings specified in ETC are loaded again.

ETC does not subject the parameters to a plausibility check. As a result, the newly created test sequence should be checked at the test instrument before it’s permanently added to the database.

Limit values are not currently set in ETC, and have to be adjusted during the automatic test. Accessing the Menu for Editing Test Sequences

In order to be able to edit existing test sequences (e.g. add test steps or change parameter settings), they first have to be loaded to ETC.

There are two ways to do this:

•ETC: Extras  Test Sequences  Load Test Sequences

• ETC: Device  Test Sequences  Receive Test Sequences

(from the file “test_sequence_xyz.seq”)

(from the connected test instrument)

Operating Overview: Creating Test Sequences at a PC

1 Create a new test sequence – enter a designation. 2 Change the designation of the selected test sequence. 3 Duplicate the selected test sequence,

(Copy) is added to the name of the duplicated sequence. 4 Delete the selected test sequence. 5 Create or add a new test step for the selected test sequence.

– Select the test step type from the list to this end and either accept or edit

its designation. 6 Duplicate the selected test step. 7 Delete the selected test step. 8 Change position of the selected test step within the sequence. 9 Select test parameters for the selected test step type from the list.

10 Select a setting for the measuring parameter from the list. 11 Accept change to the measuring parameter. 12 Exit the test sequences menu.

Saving Test Sequences in ETC to the PC

We recommend saving default test sequences, as well as edited and new test sequences, to the PC or to other data storage media using the desired filename (test_sequence_xyz.seq) with the help of the following menu command: Extras  Test Sequences  Save Test Sequences. Data loss resulting from certain administrative operations is prevented in this way (see following notes).

Due to the fact that only up to 10 test sequences, can be transferred to the test instrument, no more than 10 test sequences should be saved to any given file.

Test sequences which have been saved to a file can be reloaded to ETC at any time by clicking “Extras  Test Sequences  Load Test Sequences”. Sequences can be further edited by clicking “Extras  Test Sequences  Edit Test Sequences”.

Transferring Test Sequences from the PC to the Test Instrument

After executing the following ETC command, all previously created test sequences (up to 10) are transferred to the connected test instrument: “Device  Test Sequences  Send Test Sequences”.

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Attention!

Test sequences which have been loaded to the test instrument are deleted when: – New test sequences are received from the PC – Selection lists are received from the PC – Backup data is restored to the test instrument – The user interface language is changed – The test instrument’s entire database is deleted – The test instrument is reset to its default settings – The firmware is updated

For as long as the test sequences are being transferred, a progress bar is displayed at the PC and the illustration shown to the right appears at the test instrument’s display.

After data transmission has been completed, the display is switched to the database memory menu.

The display is returned to the measuring menu for the respective switch position by clicking ESC.

The selected test sequence (SEQU.1 in this case) is started with the ON/START ▼ key.

When a test step of the measurement type is executed, the same screen layout appears as is also the case for individual measurements. The current test step number appears in the header instead of the memory and battery icons. After pressing the Save key twice, the next test step is displayed.

Setting Parameters and Limit Values

Parameters and limit values can also be changed while a test sequence is running or before the respective measurement is started. The respective change only affects the active test sequence and is not saved.

Skipping Test Steps

There are two ways to skip test steps or individual measurements:

• Select the test sequence, change to the test step column at the right with the help of the cursor, select the x and press the ON/START ▼ key.

• The navigation menu can be opened within the test sequence by pressing the navigation key (cursor left-right). Jumping to the next or the previous test step is possible using the separate scroll keys which then appear. The navigation menu can be exited again and the current test step can be displayed by pressing the ESC key.

test step

20.3 Using Test Sequences Test Sequence Commands

Acknowledge message

Discard event

Confirm event

To prev io u s / to next step

Save measurement results

Configuring Test Sequence Parameters

Measurement parameters are also configured at the PC. However, parameters can be changed at the test instrument during the test sequence before the respective measurement is started.

Selecting and Starting a Test Sequence at the Test Instrument

Aborting or Ending a Test Sequence

An active sequence can be aborted by pressing the ESC key and then acknowledging.

Sequence Ended appears after the last test step is completed. The initial menu, List of Test Sequences, is once again displayed after acknowledging the prompt.

96 Gossen Metrawatt GmbH

Page 97

21 Maintenance

Note

Attention!

Note

21.1 Test Instrument Firmware/Software

The layout of the test instruments makes it possible to adapt device 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.

Query Current Status

➭ Turn the rotary switch to the SETUP position. ➭ Press the SW-Info CALIBRATION key.

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

Update

Internal test instrument firmware/software can be updated via the USB port with the help of a PC and an interface cable.

The firmware/software with the required version is transferred to the test instrument with the help of the MASTER Updater Software-Tool. Currently installed test instrument firmware/software is overwritten.

The MASTER Updater can be downloaded free of charge from www.gossenmetrawatt.com. Registration with myGMC is required to this end. Operating instructions for the Firmware Update Tool are available here as well.

Prerequisite for transfer: The rotary selector switch is not set to the U position.

Severe damage to the instrument may occur if incorrect fuses are used. Only original fuses from Gossen Metrawatt 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 blown fuse and insert a new one. ➭ Insert the fuse compartment lid after the fuse has been re-

placed and secure it by turning clockwise.

21.3 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.

21.4 Calibration

Use of your instrument and resultant stressing influence the instrument and lead to deviation from warranted accuracy values.

In the case of strict measuring accuracy requirements, as well as in the event of severe stressing (e.g. severe climatic or mechanical stress), we recommend a relatively short calibration interval of once per year. If this is not the case, a calibration interval of 2 to 3 years is usually adequate.

Please contact GMC-I Service GmbH for calibration services (see section 22, “Contact, Support and Service”, on page 98).

A sticker with an instrument-specific guideline value for the calibration interval and information regarding the service provider is included on the instrument as an aid.

➭ Establish a USB connection between the PC and the test in-

strument.

➭ Switch the PC and the test instrument on. ➭ Follow the instructions displayed by the MASTER Updater and

the associated operating instructions.

21.1.1 Rechargeable Battery Care

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.

Remove rechargeable batteries during lengthy periods of non-use (e.g. vacation). This prevents excessive depletion or leakage, which may result in damage to the test instrument.

21.2 Fuse Replacement

If a fuse has blown due to overloading, a corresponding message error appears at the display panel. The instrument’s voltage measuring ranges are nevertheless still functional.

➭ Disconnect the device from the measuring circuit at all poles! ➭ 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.

Date on Calibration Certificate / Calibration Interval Begins Upon Receipt

Your instrument is furnished with a calibration certificate on which a date appears. This date may be further in the past if your instrument has been stored for some time prior to sale. The instruments are stored in accordance with the specified conditions. Drift is thus negligible for a duration of 1 year. Longer storage periods are highly unusual. Consequently, the instrument’s characteristic values lie within the specifications and the first calibration interval can be determined as of the date of receipt.

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Page 98

22 Contact, Support and Service

23 CE Declaration

Gossen Metrawatt GmbH can be reached directly and simply – we have a single number for everything! Whether you require support or training, or have an individual inquiry, we can answer all of your questions here:

+49-911-8602-0 Monday to Thursday:

Friday:

8 a.m. to 4 p.m. 8 a.m. to 2 p.m.

Or contact us by e-mail at: info@gossenmetrawatt.com

Do you prefer support by e-mail?

Measuring and Test Technology: support@gossenmetrawatt.com

Industrial Measuring Technology: support.industrie@gossenmetrawatt.com

Enquiries concerning training and seminars can also be submitted by e-mail and online:

training@gossenmetrawatt.com https://www.gossenmetrawatt.com/training

The instrument fulfills all requirements of applicable EU directives and national regulations. We confirm this with the CE mark. The CE declaration is available upon request.

A calibration certificate is included with the instrument.

Please contact GMC-I Service GmbH for repairs, replacement parts and calibration

+49-911-817718-0 Beuthener Str. 41 service@gossenmetrawatt.com www.gmci-service.com

90471 Nürnberg Germany

DAkkS calibration laboratory per DIN EN ISO/IEC 17025 – accredited by the Deutsche Akkreditierungsstelle GmbH under reference number D-K-15080-01-01.

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Page 99

24 Disposal and Environmental Protection

Attention!

Proper disposal makes an important contribution to the protection of our environment and the conservation of natural resources.

Environmental Damage Improper disposal results in environmental damage. Follow the instructions concerning return and disposal included in this section.

The following comments refer specifically to the legal situation in the Federal Republic of Germany. Owners or end users who are subject to other national requirements are required to comply with the respectively applicable national requirements and to implement them correctly on site. Relevant information can be obtained, for example, from the responsible national authorities or national distributors.

Waste Electrical Equipment, Electrical or Electronic Accessories and Waste Batteries (including rechargeable batteries)

Electrical equipment and batteries (including rechargeable batteries) contain valuable raw materials that can be recycled, as well as hazardous substances which can cause serious harm to human health and the environment, and they must be recycled and disposed of correctly.

The symbol on the left depicting a crossed-out garbage can on wheels refers to the legal obligation of the owner or end user (German electrical and electronic equipment act ElektroG and German battery act BattG) not to dispose of used electrical equipment and batteries with unsorted municipal waste (“household trash”). Waste batteries must be removed from the old device (where possible) without destroying them and the old device and the waste batteries must be disposed of separately. The battery type and its chemical composition are indicated on the battery’s labelling. If the abbreviations “Pb” for lead, “Cd” for cadmium or “Hg” for mercury are included, the battery exceeds the limit for the respective metal.

Please observe the owner’s or end user’s responsibility with regard to deleting personal data, as well as any other sensitive data, from old devices before disposal.

Old devices, electrical or electronic accessories and waste batteries (including rechargeable batteries) used in Germany can be returned free of charge to Gossen Metrawatt GmbH or the service provider responsible for their disposal in compliance with applicable regulations, in particular laws concerning packaging and hazardous goods. Further information regarding returns can be found on our website.

Packaging Materials

We recommend retaining the respective packaging materials for the case that you might require servicing or calibration in the future.

Danger of Asphyxiation Resulting from Foils and Other Packaging Materials Children and other vulnerable persons may suffocate if they wrap themselves in packaging materials, or their components or foils, or if they pull them over their heads or swallow them. Keep packaging materials, as well as their components and foils, out of the reach of babies, children and other vulnerable persons.

In accordance with German packaging law (VerpackG), the user is obligated to correctly dispose of packaging and its components separately, and not together with unsorted municipal waste (“household trash”).

Private end consumers can dispose of packaging free of charge at the responsible collection point. Packaging which is not subject to so-called system participation is returned to the appointed service provider. Further information regarding returns can be found on our website.

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25 Appendix

25.1 Tables for Determining Maximum and Minimum Display Values in Consideration of the Instrument’s Maximum Measuring and Intrinsic Uncertainties

Table 1

(full-wave) / Z

L-P E.

()

Limit Valu e

Display Value

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.

L-N

(+/- half-wave) ()

L-P E.

Limit

Value

Max.

Display Value

Table 3

M

Limit

Valu e

Display 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.

INS

Limit

Value

Min.

Display Value

Table 2

/ R

()

Limit

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

Max.

Display Value

Limit

Valu e

ELoop

Max.

Display Value

Limit Value

Max.

Display Value

Table 4



Limit

Valu e

Display 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.

Limit

Value

Max.

Display Value

100 Gossen Metrawatt GmbH

GOSSEN PROFITEST MXTRA User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Safety Instructions

2 Applications

2.1 Intended Use / Use for Intended Purpose

2.2 Use for Other than Intended Purpose

2.3 Liability and Guarantee

2.4 Opening the Instrument / Repairs

2.5 Scope of Functions

3 Documentation

4 Getting Started

5 The Instrument

5.1 Scope of Delivery

5.3 Meanings of Symbols on the Instrument

5.2 Optional Accessories (excerpt)

5.4 Instrument Overview

5.5 Technical Data

5.6 Characteristic Values for PROFITEST MTECH+ and PROFITEST MBASE+

5.7 Characteristic Values for PROFITEST MXTRA and PROFITEST MPRO

6 Operating and Display Elements

6.1 Control Panel

6.2 Display

6.3 LEDs

6.4 LED Indications, Mains Connections and Potential Differences

7 Operation

7.1 Power Supply

7.1.2 Charging the Battery Pack (Z502H) in the Tester

7.2 Switching the Instrument On/Off

8 Instrument Settings

9 Database

9.1 Creating Distributor Structures, General

9.3 Creating a Distributor Structure in the Test Instrument Overview of the Meanings of Icons used to Create Structures

9.2 Transferring Distributor Structures

9.3.1 Creating Structures (example for electrical circuit)

9.3.2 Searching for Structure Elements

9.4 Saving Data and Generating Reports

9.5 Use of Barcode Scanners and RFID Readers Search for an Already Scanned Barcode

10 General Information on Measurements

10.1 Using Cable Sets and Test Probes

10.2 Test Plug – Changing Inserts

10.3 Connecting the Instrument

10.4 Automatic Settings, Monitoring and Shutdown

10.5 Measured Value Display and Memory

10.6 Help Function

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

10.8 Freely Selectable Parameter Settings or Limit Values

10.8.1 Changing Existing Parameters

10.8.2 Adding New Parameters

11 Measuring Voltage and Frequency

11.1 Single-Phase Measurement Connection

11.1.2 Voltage Between L – PE, N – PE and L – L with 2-Pole Adapter Connection

11.2 3-Phase Measurement (line-to-line voltage) and Phase Sequence

12 Testing RCDs

12.2 Special Tests for Systems and RCDs

12.2.1 Testing Systems and RCCBs with Rising Residual Current (AC) for Type AC, A/F, B/B+ and EV/MI RCDs (PROFITEST MTECH+, PROFITEST MXTRA only)

12.3 Testing of Special RCDs

12.3.1 Systems with Type RCD-S Selective RCCBs

12.3.2 PRCDs with Non-Linear Type PRCD-K Elements

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

12.3.4 Type G or R RCCB

12.4 Testing Residual Current Circuit Breakers in TN-S Systems Connection

12.6 Testing of 6 mA Residual Current Devices RDC-DD/RCMB (RDC-DD: PROFITEST MXTRA and PROFITEST MTECH+ only)

13.1 Measurements with Suppression of RCD Tripping (PROFITEST MTECH+, PROFITEST MXTRA only)

13.2 Evaluation of Measured Values

15 Earthing Resistance Measurement (Function RE)

15.1 Earthing Resistance Measurement – Mains Powered

15.2 Earthing Resistance Measurement – Battery Powered, “Battery Mode” (PROFITEST MPRO & PROFITEST MXTRA only)

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

15.4 Earthing Resistance Measurement. Mains Powered – 3-Pole Measurement: 2-Pole Adapter with Probe

15.5 Earthing Resistance Measurement, Mains Powered – Measuring Earth Electrode Potential (UE Function)

15.7 Earthing Resistance Measurement, Battery Powered, “Battery Mode” – 3-Pole (PROFITEST MPRO & PROFITEST MXTRA only)

16 Measurement of Insulation Resistance

16.1 General Select Measuring Function

17.1 Measurement with Constant Test Current

18 Measurement with Accessory Sensors

18.1 Current Measurement with Current Clamp Sensor

19 Special Functions – EXTRA Switch Position

Testing Insulation Monitoring Devices – IMD Function (PROFITEST MXTRA only)