Gossen Metrawatt METRISO XTRA Operating Instructions

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Operating Instructions

METRISO XTRA

High-Precision Insulation, Low Resistance and Voltage Measurement Instrument

3-349-818-03

2/12.17

LCD Panel

Red LED: limit value exceeded

Red LED:

– Interference voltage with device off

Setup Menu

Function Selector Switch

Slot for Carrying Strap

Green LED: limit value adhered to

– High test voltage at the measuring terminals

MEM: Key for memory

functions

ESC: Exit submenu /

activate instrument standby state

Control panel

Fixed Function Keys

LEDs → section 4.3

CONTIN: Continuous

measurement of Rins and R (kΩ)

HELP: Access context

sensitive help

START: Start measurement

Softkeys

• Parameter selection

• Limit value specification

• Entry functions

• Memory functions

METRISO XTRA

during Riso/Rins

2 GMC-I Messtechnik GmbH

Battery Holder

Battery Compartment Lid

Battery Holder Contacts

Battery

Contact Spring

User Interface

Batteries, Fuses

Measuring

RS 232

COM

SHIELD

Option KS-C (Z541F)

Option Z550A*

Charger Socket, Interfaces

These connections are located under a protective rubber flap.

a b

Replacement

Fuse

Socket for Z502R charger Caution!

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

The test instrument must remain off during the charging process.

Fuse

Inserting the Battery Holder (side view)

USB slave for PC connection

Port for connecting Barcode/RFID reader

GUARD

* Regarding Z550A:

Test Probe with measurement key remote control and LED for illuminating the measuring point: Do not use when measuring PI and DAR.

Compartment Lid

Battery

Compartment

Connections

Test Resistor 10 MΩ

GMC-I Messtechnik GmbH 3

Overview of Device Settings and Measuring Functions

Battery level

Bar graph display

Measurement

Upper range limit

Measuring

Parameter

Display panel

Save

Battery full

Battery OK

Battery weak

Battery (nearly)

Battery Level Indicator

BAT

depleted U < 8.5 V

Measuring Status

Measurement in progress: Bars moves from left

Measurement on pause: Bars are static.

to right.

||||||||||

Polarity reversal‚ L-PE / N-PE for documentation

setting

value

quantities

indicator

in progress

Memory Occupancy Display

MEM

Memory half full

MEM

Memory full > transfer data to PC!

These operating instructions describe a tester with software version SW-VERSION (SW1) 01.02.00.

Relative to Rotary Switch Setting

Switch setting,

see as of

RISO RINS

page 15

kΩ

page 20

RLO

page 21

page 14

SETUP

Pictograph

Device settings, measuring functions

RINS Insulation resistance

U Voltage at the test probes

fix Fixed test voltage,

Uvariable Variable test voltage, limit value:

Uramp Variable test voltage,

PI Polarization index DAR Absorption index R Resistance measurement

RLO Low-resistance with polarity reversal RLO+, RLO–

OFFSET Offset resistance

U Voltage measurement

Tests: LCD pixel display

Battery test Ubat

limit values per VDE 0100

1 MOhm (for go/no-go display while saving the measured value)

ramp: triggering/breakdown voltage

Low-resistance, single-pole

LCD pixel display

All pixels off Green limit LED All pixels on Red limit LED Acoustic signal

Date/time CULT Language (D, GB)

Brightness

page 8

SET on: On-time for

Contrast Default settings

Device type Serial number Software version Hardware version Calibration date Adjustment date

LCD and tester

Scope of delivery:

1 Insulation and resistance measuring instrument 1 DAkkS calibration certificate 1 Set batteries (8 pieces in battery holder) 1Carrying strap 1 Alligator clip 1 KS17-4 cable set 1USB cable 1 Condensed operating instructions 1 Supplement Safety Information – Detailed operating instructions for download from our website

at www.gossenmetrawatt.com

4 GMC-I Messtechnik GmbH

Table of Contents Page Page

1 Applications ......................................................................6

1.1 Optional Z550A Remote Control .................................................. 6

1.2 Overview of Measuring Instrument Performance

Features ...................................................................................... 6

2 Safety Features and Precautions .....................................7

3 Initial Start-Up .................................................................. 7

3.1 Battery test ................................................................................. 7

3.2 Installing or Replacing Batteries ................................................. 7

3.3 Charging the Batteries in the Tester ........................................... 7

3.4 Device Settings – SETUP ........................................................... 8

4 General Operation ...........................................................11

4.1 Connecting the Instrument ....................................................... 11

4.2 Switching On, Monitoring and Switching Off ............................ 11

4.3 Optical Indicators ..................................................................... 11

4.4 Measurement Value Display and Memory ................................ 12

4.5 Help Function ............................................................................ 12

4.6 Setting Measuring Parameters

using Insulation Resistance Measurement as an Example ....... 12

4.7 Specifying Nominal Voltage for Uvar and Uramp ...................... 13

5 Measuring Direct Alternating Voltage ............................. 14

6 Measuring Insulation Resistance ...................................15

6.1 Measuring with Constant Test Voltage

and Nominal Value Selection via Rotary Switch Position ......... 16

6.2 Measurement with Constant Test Voltage

and Variably Adjustable Nominal Value .................................... 16

6.3 Measurement with Rising Test Voltage (ramp function)

and Variably Adjustable Final Value .......................................... 17

6.4 Insulation Resistance Measurement – Special Conditions ....... 17

6.4.1 Measurements with the Guard Cable ............................................ 17

6.5 Discharging the Device Under Test ........................................... 18

6.6 Evaluation of Measured Values ................................................. 18

6.7 Polarization Index Measurement .............................................. 18

6.7.1 Absorption Index (DAR) – DC Charging Test .................................. 19

11 Characteristic Values ...................................................... 29

12 Maintenance ...................................................................31

12.1 Firmware Revision and Calibration Information ....................... 31

12.2 Rechargeable Battery Operation and Charging ........................ 31

12.2.1 Charging Procedure with the Z502R Charger (accessory) .............. 31

12.3 Fuses ........................................................................................ 31

12.3.1 Melting Fuse ............................................................................... 31

12.3.2 Electronic Fuse ........................................................................... 31

12.4 Housing ..................................................................................... 32

12.5 Return and Environmentally Sound Disposal ............................ 32

13 Appendix .........................................................................32

13.1 Sample Connection Layouts for Insulation Resistance Measure-

ment ......................................................................................... 32

13.2 Error Messages ........................................................................ 34

13.3 Attaching the Test Probe Holder to the Carrying Strap ............. 36

13.4 Technical Data for Measurement Cables

(scope of delivery: KS17-4 safety cable set) ............................ 36

13.5 Optional Accessories (not included) ......................................... 37

14 Repair and Replacement Parts Service

Calibration Center and Rental Instrument

Service ............................................................................38

15 Recalibration ..................................................................38

16 Product Support .............................................................. 38

7 Test Resistor for Insulation Measurement for Checking the

Insulation Measuring Instrument .................................... 19

8 Measuring Resistance – kOhm Function ........................ 20

9 Measuring Low-Value Resistance of up to 10 Ohm

(protective conductor and equipotential bonding conductor) ... 21

10 Database ........................................................................24

10.1 Creating Distributor Structures, General ................................... 24

10.2 Transferring Distributor Structures ........................................... 24

10.3 Creating a Distributor Structure in the Test Instrument ........... 24

10.3.1 Creating Structures (example for electrical circuit) ......................... 25

10.3.2 Searching for Structural Elements ................................................26

10.4 Saving Data and Generating Reports ........................................ 27

10.4.1 Use of Barcode Scanners and RFID Readers ................................. 28

GMC-I Messtechnik GmbH 5

1 Applications

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

The METRISO XTRA insulation and resistance measuring instrument allows for quick and efficient testing of protective measures in accordance with DIN VDE 0100, ÖVE-EN 1 (Austria), SEV 1000 (Switzerland), and regulations specific to other countries as well.

The device is equipped with a microprocessor and complies with IEC/EN 61557 / VDE 0413 regulations:

Part 1: General requirements Part 2: Insulation resistance Part 4: Resistance of earth connection, protective conductors

and equipotential bonding

Part 10: Electrical safety in low-voltage systems up to 1000 V

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

As well as requirements per VDE 0701-0702: Repair, modification and testing of electrical devices

The test instrument is especially well suited for:

•Systems setup

• Initial start-up

• Periodic testing

• Troubleshooting in electrical systems

The following measurements and tests can be performed with the insulation measuring instrument:

• Insulation resistance

• Low-resistance

• Voltage

The following can also be tested by using a shielded measurement cable:

• Floor covering electrostatic discharge capability

1.2 Overview of Measuring Instrument Performance Features

METRISO XTRA

Article No. M550S

Measurement

U = 50, 100, 250, 500, 1000 V ✓

INS

Uvar = 50 ... 1000 V ✓

INS

Uramp (U) = 100 ... 1000 V ✓

INS

PI ✓

DAR ✓ R 10 ... 10 kΩ ✓

U 0 ... 1000 V ✓

Display Functions

Backlit display ✓

Limit value LED (green/red) for: limit values per VDE 0100 in addition to acoustic signal

URamp limit value LED for:

indicating ramp characteristics

LED for dangerous contact voltage

(when switched off)

Battery level display ✓

Special Functions

Discharge capacitive devices under test ✓

Safety shutdown (UBatt < 8 V) ✓

Data storage at the instrument ✓

ETC software for data acquisition, data management and reporting ✓

Features

Measuring categories: CAT II 1000 V / CAT II I 600 V / CAT IV 300 V ✓ Test resistance: 10 MΩ ✓

Connections: charging socket, USB port (slave), RS 232 port ✓

DAkkS calibration certificate ✓

0.01 ... 10 Ω ✓

INS RLO

INS

✓

1.1 Optional Z550A Remote Control

The optional remote control with triggering key on the test probe and a key for illuminating the measuring point makes it possible to use the measuring instrument at difficult to access places.

For safety reasons, a predefined voltage is only applied to the test probes for as long as the triggering key is held depressed.

The start key on the test instrument should be used instead of remote control for triggering polarization and absorption index measurements, because these two measurements involve complete measuring cycles.

6 GMC-I Messtechnik GmbH

2 Safety Features and Precautions

Attention!

XY123

2012-06

D-K

15080-01-01

Consecutive number

Registration number Date of calibration (year – month)

Deutsche Akkreditierungsstelle GmbH – calibration lab

The electronic measuring and test instrument is manufactured and tested in accordance with safety regulations IEC/EN 610101/VDE 0411-1 and EN 61 557. safety of the operator, as well as that of the instrument, is assured.

Read the operating instructions thoroughly and carefully before using your instrument. Follow all instructions contained therein.

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

• If the battery compartment lid has been removed

• If external damage is apparent

• If connector cable or measuring adapters are damaged

•If the instrument no longer functions flawlessly

• After extraordinary damage due to transport

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

Opening of Equipment / Repair

The equipment may be opened only by authorized service personnel to ensure the safe and correct operation of the equipment and to keep the warranty valid.

Even original spare parts may be installed only by authorized service personnel.

In case the equipment was opened by unauthorized personnel, no warranty regarding personal safety, measurement accuracy, conformity with applicable safety measures or any consequential damage is granted by the manufacturer.

Data Backup

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

We assume no responsibility for any data loss. We recommend ETC software (Electric Testing Center) for back-

ing up, processing and managing data.

Meaning of Symbols on the Instrument

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

Protection class II device

When used for its intended purpose,

If battery voltage has fallen below the allowable lower limit, the pictograph shown at the right appears. The instrument does not function if the batteries have been depleted excessively, and no display appears.

3.2 Installing or Replacing Batteries

New batteries must be inserted for initial start-up, or if only one filled segment remains in the battery symbol.

Before opening the battery compartment (see page 5 for location), disconnect the instrument from the measuring circuit (mains) at all poles.

Eight 1.5 V size AA batteries in accordance with IEC LR 6 are required for operation of the insulation measuring instrument. Use new alkaline manganese batteries only.

Rechargeable NiCd or NiMH batteries may also be used. These can be charged externally or by connecting the Z502R charger to the test instrument. We recommend rechargeable NiMH batteries.

Always replace batteries in complete sets. Dispose of batteries in an environmentally sound fashion.

➭ Loosen both slotted screws for the battery compartment lid

on the back, and remove the lid.

➭ Remove the battery holder and insert eight 1.5 V size AA bat-

teries with correct polarity in accordance with the symbols.

Make sure that all of the batteries are inserted with correct polarity. If just one battery is inserted with reversed polarity, it will not be recognized by the instrument and may result in leakage from the batteries.

➭ Push the battery holder into the battery compartment such

that the battery holder’s contacts touch the contact springs at the bottom of the battery compartment (see drawing on page 3). If the battery holder is not inserted as specified, the instrument cannot be supplied with power.

➭ Replace the battery compartment lid and retighten the

screws.

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

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

EC mark of conformity

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

Calibration Seal (blue seal):

See also “Recalibration” on page 38.

3 Initial Start-Up

3.1 Battery test

Four different battery symbols, ranging from fully depleted to fully charged, continuously indicate the momentary charge level in the upper left-hand corner of the display

GMC-I Messtechnik GmbH 7

The instrument may only be placed into service if the battery compartment lid is securely fastened!

3.3 Charging the Batteries in the Tester

Use only the Z502R charger (available as an accessory) to charge batteries which have already been inserted into the test instrument.

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

– Rechargeable batteries have been installed with

correct polarity (not standard batteries)

– The test instrument has been disconnected from the

measuring circuit at all poles

– The instrument must remain off during charging.

Refer to section 12.2.1 with regard to charging batteries which have been inserted into the tester.

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

Observe the charging sequence (indicated by the LED 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).

3.4 Device Settings – SETUP

SETUP

LED and LCD test menu

Battery test menu

Brightness/contrast menu

Software revision level Calibration date

Display: date / time

Display: automatic shutdown

of display illumination after 30 s.

of the tester after 120 s. Time, language, profiles

Return to main menu

Limit LED: test red

Limit LED: test green

Cell test

Inverse cell test

Hide all pixels

Show all pixels

Acoustic signal test

Return to main menu

Increase brightness

Decrease brightness

Increase contrast

Decrease contrast

Set time

→

Default settings →

User interface language

→

3a 3b

Set date →

On-time for display illumination / tester

Return to submenu

Display Illumination On-time

Brightness and Contrast Settings Time, On-Time and Default Settings

Menu Selections for Operating Parameters

LED Tests LCD and Acoustic Signal Tests

Test Instrument On-Time

Automatic shutdown, deactivated = OFF

8 GMC-I Messtechnik GmbH

SETUP

LED and LCD test menu

Battery test menu

Brightness/contrast menu

Software revision level Calibration date

Display: date / time

Display: automatic shutdown

of display illumination after 15 s.

of the tester after 45 s.

Time, language, profiles

Return to main menu

Increase brightness

Decrease brightness

Increase contrast

Decrease contrast

Set time

→

Default settings →

User interface language

→

3a 3b

Set date →

On-time for display illumination / tester

Set time

Menu Selection for Operating Parameters

Adjusting Brightness and Contrast Set Time, Language, Profiles, Acoustic Signal

Set date

Select time/date

Increase

hours

Activate settings

minutes

Increase seconds

Return to submenu

Decrease

hours

minutes

Decrease

seconds

Select time/date

Increase

day

Activate settings

month

Increase year

Return to submenu

Decrease

day

month

Decrease

year

GMC-I Messtechnik GmbH 9

Significance of Individual Parameters

Note

Attention!

0b23c

Test Instrument On-Time

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

On-Time for LCD Illumination

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

Submenu: Battery Level Query

Battery voltage U the battery to a load.

(Uo) can be queried here without subjecting

BAT

Data are lost when the language is changed, or if the instrument is reset to its default settings!

Back up your measurement data to a PC with the help of ETC software before pressing the respective key. The prompt window shown at the right asks you to confirm deletion.

User Interface Language (CULTURE)

➭ Select the desired language with the appropriate country

code and acknowledge your selection by pressing the ✓ key.

Measuring Sequence

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. Measurement results cannot be saved to memory.

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

Default Settings (GOME SETTING)

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

Firmware Revision and Calibration Information (example)

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

10 GMC-I Messtechnik GmbH

START/STOP SHIELD COM

Option Z550A

KS-C (Z541F)

Limit

Green

Limit

Red

Uramp

Green

Uramp

Red

Limit

4 General Operation

4.1 Connecting the Instrument

The test leads are connected to the “+” and “COM” jacks.

Special Case:

When inserting the 3-pole plug, make sure that the jack plug is inserted in the START/STOP position. Press and align the 3pole plug such

Test Probe for Remote Triggering (Option Z550A)

4.3 Optical Indicators

LED Status

Function – Cause

Limit Value Indication

– Measured insulation resistance does not violate the limit

value.

– Measured low-resistance Rlo does not violate the limit

value.

Limit Value Indication

– Measured insulation resistance has fallen short of the

selected limit value.

– Measured low-resistance Rlo does has exceeded the

permissible limit value.

Indication of ramp characteristics

– Maximum ramp voltage (upper voltage limit) has been

reached (without breakdown).

that it is placed flush on the connection terminal. This is the only way to assure that the three contacts of the jack plug are properly connected with the command cables.

Special Case: Measuring High-Value Resistance with the KS-C Probe (Option)

When measuring electrostatic discharge capacity for floor coverings, the shielded cable should be connected to the COM and SHIELD jacks (KS-C accessory set, “cable set consisting of measurement cable and high-resistance measurement cable for measurements in the GΩ range”, see diagram). Be sure to observe color coding.

Function testing should be executed at regular intervals (see following section regarding testing the LEDs).

Testing the LED which Indicates Detection of Interference Voltage when Switched Off – OFF Switch Position

➭ Apply a voltage of greater than 50 V (+ and COM jacks). ➭ Turn the rotary switch to the V position. ➭ Read the voltage value at the LCD. ➭ Turn the rotary switch to the OFF position.

Test results: If applied voltage is unchanged and the LED which indicates the detection of interference voltage lights up red, the

Indication of ramp characteristics

– Maximum ramp voltage (upper voltage limit) has not been

reached (due to breakdown). Breakdown voltage is displayed.

Interference voltage in switched-off condition lings of test voltage during insulation measurement

Dangerous voltage of greater than 50 V is present at the measurement inputs: – Initialization of insulation resistance and

low-resistance measurement is disabled.

– High test voltage is applied to the measuring terminals

(Riso/Rins, PI and DAR) during insulation measurement

Detection of interference voltage in the on-state

in the resistance measuring ranges after starting measurement The value of interference voltage is displayed in addition to signalling in the resistance measuring ranges for as long as it is present.

and signal-

LED is OK. In this case, the LED reliably indicates interference voltage even when the instrument is switched off. We recom-

4.2 Switching On, Monitoring and Switching Off

If supply voltage drops to a value of less than 8.5 V, the LOW BATT pop-up message appears: No more measurements can be started.

If battery voltage falls below the allowable limit value of 8.0 V, the

mend executing this test at regular intervals.

METRISO XTRA Measuring Functions, Measuring Ranges and Limit Values

Measuring Ranges

instrument cannot be switched on, or it is switched off. Measurements cannot be started in the resistance measuring

ranges in the event of interference voltage. The instrument only switches itself off automatically after comple-

tion of an (automatic) measuring sequence, and after the predetermined on-time has expired (see page 8). On-time is reset to its original value as defined in the setup menu, as soon as any key or the rotary function switch is activated.

/ R

ISO

INS

/ R

ISO

INS

/ R

ISO

INS

R 10 ... 10 kΩ

U 0 ... 1000 V

U = 50, 100, 250, 500, 1000 V

Uvar = 50 ... 1000 V

Uramp (U ) = 100 ... 1000 V

0.01 ... 10 Ω

If the instrument is switched off automatically with the rotary switch in any position other than OFF, it can be reactivated by pressing the ESC key. The instrument is also reactivated if the

Limit Values

rotary switch is activated and turned through the OFF position.

/ R

Limit R

The instrument can be switched off manually by turning the rotary switch to the OFF position.

GMC-I Messtechnik GmbH 11

ISO

PI limit Adjustable 1.0, 1.1, 1.5, 2.0, 3.0, 4.0

DAR limit Adjustable 1.25, 1.6

Limit R

Fixed setting 50 kΩ @ U

INS

Fixed setting 100 kΩ @ U Fixed setting 500 kΩ @ U Fixed setting 1 MΩ @ U Fixed setting 1 MΩ @ U Fixed setting 1 MΩ @ U

Fixed setting 2 Ω

ISO/UINS

= 50 V

= 100 V

= 250 V

= 500 V

= 1000 V

= Uvar

4.4 Measurement Value Display and Memory

Note

HELP

The following appear at the display panel:

• Measurement values with abbreviations and units of measure

• Selected function

• Error messages Measurement values for automatic measuring sequences are

stored and displayed as digital values until the next measurement sequence is started, or until automatic shut-off occurs.

4.5 Help Function

A wiring diagram can be displayed for selected switch positions, as well as basic functions after they have been selected with the rotary selector switch:

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

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.

4.6 Setting Measuring Parameters using Insulation Resistance Measurement as an Example

1 Access the submenu for setting the desired parameter. 2 Select a parameter using the ↑ or ↓ scroll key. 3 The setting value is not permanently accepted for the respective measure-

ment until the ✓ key is pressed, after which the display is returned to the main menu. You can return to the main menu by pressing ESC instead of ✓, without accepting the newly selected value.

12 GMC-I Messtechnik GmbH

4.7 Specifying Nominal Voltage for Uvar and Uramp

Note

Select value.

↵ Accept value.

Delete characters =

✓Save value (to list).

Select the EDIT menu.

change cursor position.

Nominal voltage can be freely selected within specified limits for the Uvar and Uramp measuring functions:

1 Access submenu for selecting the desired voltage:

Press the key with the icon.

2 Select the desired value with the left or right scroll key. The value is

accepted by pressing the ↵ key. The entire value is acknowledged by selecting ✓ and then pressing the ↵ key. The new nominal voltage appears at the main display.

Observe the predefined limits for the new setting value. New, freely selected limit values or nominal values included in the parameters list can be deleted/edited at the PC with the help of ETC software.

GMC-I Messtechnik GmbH 13

5 Measuring Direct Alternating Voltage

Note

L1 L2

N PE

Max.

1.2 kV

COM

COMSHIELD

Direct voltage

Alternating voltage

Pulsating voltage

(DC + AC TRMS)

You can measure direct voltage, as well as sinusoidal alternating voltage with frequencies ranging from 45 to 65 Hz, with this test instrument.

Select Measuring Function

➭ Select the V measuring function with the rotary switch.

Connection

➭ Connect the measurement cables to the + and COM jacks. ➭ Contact the measuring point with both test probes.

Measurement

The measured value is displayed directly (without pressing the START key) – in analog format at the bar graph and in digital format at the matrix display.

➭ After completing the measurement, switch the instrument off

by turning the rotary switch to the OFF position.

The ESC, START and CONTIN. keys have no function in this case.

Set the waveform parameter (voltage type).

Input impedance for the voltage measuring range is 10 MΩ.

14 GMC-I Messtechnik GmbH

6 Measuring Insulation Resistance

Note

INS

var

ramp

HELP

1/2 2/2

L-PE

N-PE

1/4 2/4 3/4 4/4

L1-PE L2-PE L3-PE

N-PE

AUTO1 AUTO3

ISO/RINS

→ MEMORY

MEMORY → R

ISO/RINS

Switch and save

Switch without saving

Select Measuring Function

➭ Select the R

depending on the measuring task, constant or variable test voltage (Uvar), or a ramp function (Uramp).

Connection

measuring function with the rotary switch and,

INS

Semiautomatic Measurement in Multipole Systems

Fast, semiautomatic polarity reversal is possible in all rotary switch positions for insulation resistance measurement. However, polarity selection is only relevant for documentation.

Fast Polarity Reversal

The polarity parameter is set to AUTO1 (single-phase mains voltage) or AUTO3 (3-phase mains voltage).

There are two ways to quickly and conveniently switch amongst all polarity variants without switching to the parameter settings submenu:

• Press the NEXT key.

• Press the save key at the instrument twice after each measurement.

➭ Connect the device under test to the + and COM jacks. Sample connection layouts for insulation resistance measurement

are included in section 13.1. Insulation resistance can only be measured at voltage-free

objects. If mains voltage or interference voltage is applied to the measurement inputs, measurement cannot be started.

Checking Measurement Cables Before Measurements

Before performing insulation measurement, the test probes on the measurement cables should be short-circuited in order to assure that the instrument displays a value of less than 1 kΩ (see section 9). In this way, incorrect connection can be avoided and broken measurement cables can be detected.

Continuous Measurement via the CONTIN. Key

The instrument’s batteries are rapidly depleted during the insulation resistance measurement. Stop continuous measurement with “constant test voltage” as soon as the display has settled in.

GMC-I Messtechnik GmbH 15

6.1 Measuring with Constant Test Voltage and Nominal Value

Note

Polarization index

Test voltage switch position:

50 V / 100 V / 250 V / 500 V / 1000 V

Absorption index

Insulation resistance

START

CONTIN

Variable test voltage

50 V ... 1000 V

(constant nominal value):

START

CONTIN

Selection via Rotary Switch Position

Set Parameters

6.2 Measurement with Constant Test Voltage and Variably Adjustable Nominal Value

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.

Set Parameters

The constant test voltage function offers two options:

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

• As soon as you press the CONTIN key, test voltage UN is applied and insulation resistance RINS is measured. Do not press the key again in order to stop measurement until the measured value has settled in (settling time may be several seconds in the case of high cable capacitance values). Voltage U, which is measured during testing, corresponds to voltage UINS. After once again pressing the CONTIN key, measurement is ended and the last measured values for RINS and UINS are displayed. U drops to a value of less than 10 V after measurement (see the section entitled “Discharging the Device Under Test”.

Start Measurement

Refer to section 4.7 regarding how to enter the variable voltage. The selected nominal voltage is displayed in the main menu.

❏ Pole Selection Report Entry

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

Start Measurement

After pressing the START key, nominal voltage UN (50 to 1000 V) entered previously via the parameters menu is applied until the measured values settles in.

After pressing the CONTIN. key, the previously selected test voltage or nominal voltage U key is pressed once again.

(50 to 1000 V) is applied until the CONTIN.

U is the voltage which is measured at the test probes during and after testing. This voltage drops to a value of less than 10 V after measurement (see section 6.5, “Discharging the Device Under Test’ ’) .

Test voltage U

After pressing the START key, nominal voltage UN (50 ... 1000 V) selected with the rotary switch is applied until the measured values settles in.

After pressing the CONTIN. key, the previously selected test voltage or nominal voltage U

key is pressed once again.

U is the voltage which is measured at the test probes during and

after testing. This voltage drops to a value of less than 10 V after measurement (see section 6.5, “Discharging the Device Under Test’’).

Test voltage U

16 GMC-I Messtechnik GmbH

(50 to 1000 V) is applied until the CONTIN.

is displayed for U

INS

is displayed for U

The instrument’s batteries are rapidly depleted during the insulation resistance measurement. Stop continuous measurement with “constant test voltage” as soon as the display has settled in.

INS

6.3 Measurement with Rising Test Voltage (ramp function)

Note

Attention!

Note

Maximum test voltage

100 V ... 1000 V

(final ramp value)

Max. 1 mA (at 1 KΩ/V)

Current load:

START

+Measurement Cable

–Measurement Cable

Guard Cable

Conductor

Insulation Material

Guard Rings

Contact Ring

(COM)

and Variably Adjustable Final Value

The “Uramp” rising test voltage function (ramp function) is used to detect weak points in the insulation, as well as to determine response voltage for voltage limiting components.

Set Parameters

6.4 Insulation Resistance Measurement – Special Conditions

Insulation resistance can only be measured at voltagefree objects.

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

Refer to section 4.7 regarding how to set the final ramp value. The selected nominal voltage value is displayed in the main menu.

❏ Pole Selection Report Entry

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

Start Measurement

After briefly pressing the START key, test voltage is continuously increased until the specified nominal voltage U reached.

Insulation measurement with rising test voltage is ended:

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

• After sparkover occurs at breakdown voltage

(100 ... 1000 V) is

is reached and

If an interference voltage of roughly – Interference Voltage” appears in a pop-up window, insulation resistance is not measured. In the case of interference voltage > 50 V, the “> 50 V” LED lights up.

In 3-phase systems, 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 noticeable shock may lead to injury (e.g. resulting from a startled reaction etc.).

≥ 15 V is present and “U

EXT

6.4.1 Measurements with the Guard Cable

The measurement of very high resistances necessitates extremely minimal measuring current and may be rendered problematic as a result of influences such as electromagnetic fields, humidity or surface pollution. An accurate test set-up is thus absolutely essential.

A guard cable must be used for measurements within a range of 100 GΩ (10 GΩ) … 1TΩ, in order to prevent surface current from distorting measurement results. The guard rings prevent current at the surface of the insulation material from flowing from the +measurement cable to the –measurement cable, instead of through the insulation material itself.

➭ Insert the plug from the guard cable into the appropriate jack

in the test instrument.

➭ Plug the alligator clip onto the guard cable test probe. ➭ Connect the alligator clip to the guard ring between the two

measuring points at the insulation material under test.

➭ Refer to section 6.1 to section 6.3 regarding the measuring

sequence.

As soon as the final ramp value is reached, the Uramp LED lights up green. If the final ramp value is not reached due to sparkover, the Uramp LED lights up red.

Highest achieved test voltage U or any triggering or breakdown volt- age which occurs is displayed for U

GMC-I Messtechnik GmbH 17

INS

Measurement can be stopped at any time by pressing the START key or the CONTIN. key.

The following materials can be used as guard rings: aluminum foil, copper foil or metallic hose clamps.

6.5 Discharging the Device Under Test

Attention!

Note

10min

1min

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

Polarization Index

Test voltage switch position:

50 V / 100 V / 250 V / 500 V / 1000 V

Absorption index

Insulation resistance

START

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

Touching such objects is life endangering!

When an insulation resistance measurement has been performed on a capacitive object it is automatically discharged by the instrument after measurement has been completed. Contact 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!

6.6 Evaluation of Measured Values

Instrument measuring error must be taken into consideration in order to assure that the limit values set forth in DIN VDE regulations are not fallen short of. The required minimum display values for insulation resistance can be determined with the help of the table, “

Display Values in Consideration of Measuring Uncertainty page 30. These values take maximum device error into consideration (under nominal conditions of use). Intermediate values can be interpolated.

”, o n

Z550A Option

Use of the measurement cable with remote start/stop is not advisable for polarization index measurement PI or absorption index measurement DAR, because measurement is only conducted as long as the START key is pressed and held. sequence is nevertheless executed, start each measurement with the

Set Parameters

In order to assure that the entire measuring

START

key at the test instrument only.

6.7 Polarization Index Measurement

In the case of electrical machines which include components with windings (generator and motor windings), it’s advisable to conduct polarization index testing. This procedure involves expanded testing of insulation resistance. The accumulation of moisture and contamination on windings can be detected as reduced insulation resistance.

DC measuring voltage from the METRISO XTRA is applied to the insulation for a duration of 10 minutes to this end. Measured values are documented after one minute, and after ten minutes. If the insulation is good, the value measured after ten minutes is higher than the value measured after one minute. The relationship between the two measurement values is the polarization index.

The molecules within the insulation are aligned due to the application of measuring voltage over a long period of time, resulting in polarization. The polarization index indicates whether or not the molecules contained in the insulation can still be moved, thus allowing for polarization. This, in turn, is an indication of the condition of the insulation. The more freely the charge carriers can be moved, the better is the condition of the insulation.

The following rules apply in general:

PI value < 1: Troubleshooting is required. PI value = 1 to 2: Maintenance is advisable. PI value = 2 to 3: DUT is OK!

PI values > 3: Error-free device under test

No immediate action is required. Preventive maintenance can be planned according to workload.

Start Measurement

Applications

Determination of moisture and contamination levels

The selected polarization index menu is only displayed until the rotary

For PI measurement, test instrument on-time should be set to OFF (see section 3.4, “Device Settings – SETUP’’).

18 GMC-I Messtechnik GmbH

switch is activated or the parameter is changed.

6.7.1 Absorption Index (DAR) – DC Charging Test

DAR

60s

30s

---------=

Polarization Index

Test voltage switch position: 50 V / 100 V / 250 V / 500 V / 1000 V

Absorption index

Insulation resistance

START

COM

10M

COMSHIELD

ISO/RINS

10 MΩ

The absorption index test is part of the polarization index test. Insulation resistance measurements are placed in relationship to one another after 30 and 60 seconds.

Applications:

Set Parameters

Faster version of the polarization index test.

The selected polarization index menu is only displayed until the rotary switch is activated or the parameter is changed.

7 Test Resistor for Insulation Measurement for

Checking the Insulation Measuring Instrument

According to section 5.3.1.2 of VDE 0105-100 (EN 50110-1), the following applies: “These measuring instruments must be tested before, and if applicable after use.” The two outermost jacks on the connection panel must be connected to each other internally via a 10 MΩ test resistor to this end.

The sum of test resistor and cable resistance (for both cables), including test probes, amounts to 10 MΩ ±5%. This value allows for quick self-testing.

Start Measurement

➭ Connect the measurement cables to the + and COM jacks. ➭ Insert the test probes into the above described jacks. ➭ Select the RiSO/iNS measuring function with the rotary

switch, as well as the desired test voltage, e.g. RiSO 100V.

➭ Press the start key and view the measurement results.

GMC-I Messtechnik GmbH 19

8 Measuring Resistance – kOhm Function

Attention!

kΩ

START

CONTIN

Connector with

Shielded Cable,

Option KS-C (Z541F)

Shielded Cable

Resistances of greater than 10 Ω and less than 10 kΩ are measured in this switch position. Refer to section 9 regarding resistances of less than 10 Ω .

Select Measuring Function

➭ Select the kΩ measuring function with the rotary switch.

Connection

➭ Connect the device under test to the + and COM jacks.

Special Case: Measuring High-Value Resistance with the KS-C Probe

Connection

➭ Connect the device under test to the + and COM jacks with a

shielded cable via the optional KS-C probe.

Resistance can only be measured at voltage-free objects. If mains voltage or interference voltage is applied to the measurement inputs, measurement cannot be started.

Start Measurement

➭ Start an individual measurement by briefly pressing the START

key, or initiate continuous measurement by briefly pressing the CONTIN key.

20 GMC-I Messtechnik GmbH

9 Measuring Low-Value Resistance of up to

Attention!

Note

HELP

COM

COMSHIELD

R < 10

0V !

Polarity: ± to PE

10 Ohm

(protective conductor and equipotential

bonding conductor)

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

In the measuring function RLO, measurements are performed with currents about 200 mA. Please check before measuring whether your DUT or your circuit is designed for these high current values.

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

Select Measuring Function

Set Polarity Parameter (direction of current flow)

➭ Select a polarity option or automatic polarity reversal.

Measuring ROFFSET

When using extension cables with resistance of up to 5.00 Ω, their resistance can be deducted automatically from the measurement results. Proceed as follows:

➭ Select the Rlo measuring function with the rotary switch.

Connection

➭ Short-circuit the end of the measurement extension cable with

the second test probe at the instrument.

➭ Start measurement of offset resistance with OFFSET.

If the difference between RLO+ and RLO– is great than 10% with automatic polarity reversal, no offset is accepted. A pop-up window appears which must be acknowledged by any desired key. The respectively smaller value is otherwise stored to memory as an offset value. The maximum offset value is 5.00 Ω. Negative resistances may result due to the offset value.

The permissible value for R In the case of values of greater than 5.00 Ω, a pop-up window appears and the value is not accepted. The error message must be acknowledged and/or cleared by any desired key. The measured R measurement value for all subsequent R

OFFSET can be deleted at any time by pressing the OFFSET CLEAR

key.

OFFSET value will now be deducted from the actual

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

OFFSET is between 0.00 and 5.00 Ω.

measurements.

➭ Connect the device under test to the + and COM jacks.

GMC-I Messtechnik GmbH 21

Start Measurement

Attention!

Note

START

Measurement of + pole to PE

Measurement of – pole to PE

Automatic Polarity Reversal

After the measuring sequence has been started, the instrument performs measurement with automatic polarity reversal, first with current flow in one direction, and then in the other.

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.

Resistances which do not demonstrate a stable value until after a “settling in period” should not be measured with automatic polarity reversal. Measurement with automatic polarity reversal may lead to varying and/or inflated measurement values, and thus to an ambiguous reading.

Limit Value Indication

If the measured value is less than or equal to 2 Ω, the limit LED lights up green. If the measured value is greater than 2 Ω, the LED lights up red.

Evaluating Measurement Results

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

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

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

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

Final results

The measurement cannot be started until the test probes are in contact with the device under test. If a voltage of U > approx. 3 V is present at the device under test, a pop-up window appears which warns against interference voltage. This error message must be acknowledged and/or cleared by any desired key. Eliminate the interference voltage. If resistance is greater than 10 Ω, OL appears at the display.

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

Measuring Low-Value Resistance

If an extension cable is used its resistance must be measured and deducted from the measurement results.

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

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

Polarity Selection Display Condition

+ pole to PE RLO+ None

– pole to PE RLO– None

RLO If ΔRLO ≤ 10%

± pole to PE

22 GMC-I Messtechnik GmbH

RLO+ RLO–

If ΔRLO > 10%

Evaluating of Measured Values

See table, “ on page 30.

Display Values in Consideration of Measuring Uncertainty

”,

Calculation of Cable Lengths for Common Copper Conductors

If the 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 directions of current flow, 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)!

GMC-I Messtechnik GmbH 23

10 Database

10.1 Creating Distributor Structures, General

A complete distributor structure with customer, building and distributor data can be created in the METRISO XTRA test instrument. This structure makes it possible to assign measurements to distributors in various buildings and customer facilities.

10.2 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.

There are two possible procedures:

• On location or at the construction site: Create the distributor structure in the test instrument. A distributor structure with up to 50,000 structural elements can be created in the test instrument, which is saved to the instrument’s flash memory.

• Create and save a distributor structure at a PC with the help of ETC report generating software (Electric Testing Center) (see condensed operating instructions for ETC report generating software). The distributor structure is then transferred to the test instrument.

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

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

10.3 Creating a Distributor Structure in the Test Instrument

Overview of the Meanings of Icons used to Create Structures

Icon Meaning

Main

Sub-

Level

Memory menu, page 1 of 3

Cursor UP: scroll up

Cursor DOWN: scroll down

Note regarding ETC Report Generating Software

The following steps must be completed before using the software:

• Install USB device drivers: (required for operation of the METRISO XTRA at a PC): GMC-I Driver Control software can be downloaded from Gossen Metrawatt's website at:

http://www.gossenmetrawatt.com

→ Products → Software → Software for Testers → Utilities → Driver Control

• Install ETC report generating software: You can download the current ETC version free of charge from our homepage under section mygmc after registration or login:

http://www.gossenmetrawatt.com

→ Products → Software → Software for Testers →

Protocol Software without Database →

ETC → myGMC → zum Login

ENTER: acknowledge selection + → – change to sub-level

(open directory) or

– → + change to main level

(close directory)

Display structure designation or ID number

Switch back and forth between structure designation and ID number

Hide structure designation or ID number

Change display to menu selection

Memory menu, page 2 of 3

Add a structural element

Meaning of icons from top to bottom:

Customer, building, distributor, RCD and electrical circuit (display of the icons depends on the selected

structural element). Selection: up/down scroll keys and ↵ In order to add a designation to the selected

structural element, refer to the edit menu below.

EDIT

For additional icons see edit menu below. Delete the selected structural element.

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

24 GMC-I Messtechnik GmbH

Icon Meaning

Distributor

A check mark to the right of a structural 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

Same type of element as in the Windows Explorer:

+: Sub-object available, display by pressing ↵. –: Sub-objects are displayed, hide by pressing ↵.

Scroll up

Scroll down

Acknowledge selection /

Display object

change level

or ID number

Create object

Delete object

VΩA: show measurement data

Edit designation

Edit the selected structural element.

Memory menu, page 3 of 3

Search for ID number. > Enter complete ID number.

Search for text. > Enter full text (complete word).

Search for ID number or text.

Continue searching.

Edit menu

Cursor left: Select an alphanumeric character.

Cursor right: Select an alphanumeric character.

ENTER: Accept an individual character.

Acknowledge entry

←

Cursor left

→

Cursor right Delete characters.

Distributor Structure Symbology / Tree Structure

10.3.1 Creating Structures (example for electrical circuit)

After selection with the MEM key, all setting options for the creation of a tree structure are made available on three menu pages (1/3, 2/3 and 3/3). The tree structure consists of structural elements, referred to below as objects.

Select the position at which a new object will be added.

Switching amongst different types of alphanumeric characters:

A Upper case letters

a Lower case letters

0Numbers

@ Special characters

Use the ↑↓ keys in order to select structural elements. Change to the sub-level with the ↵ key. Go to the next page with the >> key.

Create a new object.

GMC-I Messtechnik GmbH 25

Press the key in order to create a new object.

Select a new object from a list.

Scroll up

Scroll down

Acknowledge selection

Select character

↵ Accept character

Delete characters

Character selection:

✓ Save object designation

A, a, 0, @

Scroll up

Scroll down

Acknowledge selection /

Display object

Menu selection → page 3/3

change level

or ID number

Search for ID number

Search for text

Search for ID number or text

Select character

↵ Accept character

Delete characters

Character selection:

✓ Save object designation

Continue searching

Search for ID number

Search for text

Search for ID number or text

Search for ID number

Search for text

End search

Search for ID number or text

After selecting text search ...

Select the desired object from the list with the ↑↓ keys and acknowledge with the ↵ key.

Enter a designation (Example Distributor).

Enter a designation and then acknowledge it by entering a ✓.

10.3.2 Searching for Structural Elements

... 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.

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

Mark the structural element from which the search will be started. Objects located underneath or next to this object will be included in the search.

Go to page 3/3 in the database menu.

26 GMC-I Messtechnik GmbH

10.4 Saving Data and Generating Reports

Note

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

structural element. Proceed as follows, adhering to the prescribed sequence:

➭ Select the desired measurement with the function selector

switch.

➭ Start the measurement by pressing the START key. 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 structural view.

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

structural element / object, for which the measurement data will be saved.

➭ If you would like to save a comment along with the

measurement, press the key shown at the right and enter a designation via the “EDIT” menu as described in section 10.3.1.

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

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

Alternative Storage Procedure

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

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

If you change the parameters in the measurement view, they are not saved for the structural element. A measurement with changed parameters can nevertheless be saved to the structural element, and any changed parameters are documented in the report for each measurement.

An inverse displayed check mark in the header means that the respective measurement has been passed. An inverse displayed 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.

➭ Scrolling amongst measurements is possible with

the keys shown here:

GMC-I Messtechnik GmbH 27

Data Evaluation and Report Generation with ETC Software

Note

All data, including the distributor structure, can be transferred to the PC and evaluated with the help of ETC software. Additional information can be entered here subsequently for the individual measurements. After pressing the appropriate key, a report including all measurements within a given distributor structure is generated, or the data are exported to an Excel spreadsheet.

The database is exited when the rotary selector switch is turned. Previously selected parameters in the database are not used for the measurement.

10.4.1 Use of Barcode Scanners and RFID Readers

Search for an Already Scanned Barcode

The search can be started from any switch setting and menu. ➭ Scan the object’s barcode.

The search is started based on the currently selected structural element down though lower hierarchical levels. The found barcode is displayed inversely.

➭ This value is accepted after pressing the ENTER key.

An already selected object cannot be found.

Continued Searching in General

Regardless of whether or not an object has been found, searching can be continued by pressing this key:

– Object found: Searching is continued underneath the previ-

ously selected object.

– No further object found: The entire database is searched at

all levels.

Reading In a Barcode for Editing

If the menu for alphanumeric entry is active, any value scanned by means of a barcode or RFID reader is accepted directly.

Using a Barcode Printer (accessory)

A barcode printer allows for the following applications:

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

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

28 GMC-I Messtechnik GmbH

11 Characteristic Values

METRISO XTRA

Meas.

Qty.

ISO

AC/DC

the indicated accuracy is only achieved with the optional accessory „shielded high-resistance measuring cable KS-C (article number Z541F)“

up to 5 Ω

iSO

50 V

100 V

250 V / 500 V

Display range as of

01.0 Ω

Range Measuring Range

100 k 10 kΩ ... 99.9 kΩ 0.1 k

1 M 100 kΩ ... 999 kΩ 1 k

10 M 1.00 MΩ ... 9.99 MΩ 10 k

100 M 10.0 MΩ ... 99,9 MΩ 100 k

1000 V

1 G 100 MΩ ... 999 MΩ 1 M

10 G 1.00 GΩ ... 9.99 GΩ 10 M

100 G 10,0 GΩ ... 99.9 GΩ 100 M ±(8% rdg. + 3 d)

1 T 100 GΩ ... 999 GΩ 1 G ±(25% rdg. + 5 d) 1)±

100 V 10.0 V ... 99.9 V 0.1 V

1000 V 100 V ... 999 V 1 V

10 Ω 0.17 ... 9.99 Ω

100 Ω 10.0 ... 99.9 Ω 0.1 Ω

1 kΩ 100 ... 999 Ω 1 Ω

10 kΩ 1.00 ... 9.99 kΩ 10 Ω

Reso-

lution

0.01

Open-Circuit

Voltage

50 V /100 V:

1.25 U

250 V / 500 V / 1000 V:

1.1 U

4 V < U0 < 6 V

U0 max. 15 V

Test Current Intrinsic Uncertainty Measuring Uncertainty Overload Capacity

0max

ISO

IN = 1 mA

≤ 5 mA

ISO

——±(2.5% rdg. + 3 d) ±(5% rdg. + 3 d)

200 mA ≤ I

I ≤ 260 mA

1 mA ≤ I

I ≤ 1.3 mA

does not conform to DIN EN 61557-2

Display range up to 1.2 kV

±(5% rdg. + 3 d) ±(7% rdg. + 3 d)

±(10% rdg. + 3 d)

(50% rdg. + 20 d)

±(2.5% rdg. + 3 d) ±(5% rdg. + 3 d)

1) 2)

1000 V AC/DC

TRMS

1000 V AC/DC

TRMS

1000 V AC/DC

TRMS

1000 V AC/DC

TRMS

Breakdown Voltage (Uramp)

Parameter Range Intrinsic

Voltage range 100 … 1000 V Rise time 5 … 300 s — — Measuring time 1 … 120 s /

uto / cont. measurement

Uncertainty

±(10% rdg. + 8 d)

——

Measuring Uncertainty

±(15% rdg. + 10 d)

Polarization Index (PI), Absorption Ratio (DAR)

t1 [min.] t2 [min.] Limit [min.]

PI 01:00 10:00 > 4.0 / > 3.0 / > 2.0 / > 1.5 / > 1.1 / > 1.0

DAR

00:30 01:00 > 1.60 / > 1.25

PI and DAR are calculated values. Insulation measurement specifications apply.

Reference Conditions

Reference temperature + 23 °C ± 3 K

Relative humidity 40 to 75% Measured quantity

frequency 45 to 65 Hz Measured quantity

waveshape Sine, deviation between TRMS and recti-

fied value < 1%

Battery voltage 9.5 V ±0.1 V Test resistance 10 MΩ±1%

Electrical Safety

Protection class II per IEC/EN 61010-1/VDE 0411-1 Pollution degree 2 Measuring category

CAT II 1000 V / CAT III 600 V / CAT IV 300 V Fuses Fuse link FF315mA/1000V, effective in all resis-

tance measuring ranges, 1 additional

replacement fuse in the battery compart-

ment Electronic fuse Protects low-resistance and resistance

measurements R

and R

Electromagnetic Compatibility (EMC)

Interference emission EN 61326-1:2013, class B Interference immunity EN 61 326-1:2013

Power Supply

Batteries 8 ea. 1.5 V mignon cell (8 ea. size AA)

(alkaline manganese per IEC LR14) or 8 rechargeable NiMH batteries (must be recharged externally)

Z502R charger Broad-range charger with barrel connec-

tor, input: 100 to 240 V AC,

output: 16.5 V DC, 1 A (Mascot) Nominal range of use 8.5 to 12 V Battery test Battery capacity display with battery sym-

Battery saver circuit Automatic shutdown of display illumination

Service life For R

Safety shutdown If supply voltage is too low (U < 8 V), the

Recharging socket Installed rechargeable batteries can be

Charging time Approx. 2 hours *

* Maximum charging time with fully depleted rechargeable batteries.

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

bol in 4 segments: .

Querying of momentary battery voltage via

menu function.

after 10 to 30 seconds (after the last time

the rotary switch is actuated) can be

selected in the setup menu (see page 8).

The test instrument is automatically

switched to the standby mode if the mea-

sured value remains unchanged for

approximately 15 minutes, and if none of

the controls are activated during this time.

The instrument is switched off automatically

if the measured value remains unchanged

for a long period of time and if none of the

keys or the rotary switch have been acti-

vated during on-time (specified in sec-

onds).

(1000 V / 1 MΩ) and RLO with

INS

25 s on-time and 1 subsequent measure-

ment each for a duration of 5 s

– With batteries (alkaline manganese):

700 measurements

– With rechargeable batteries (2000 mAh):

650 measurements

instrument is switched off, or cannot be

switched on.

recharged directly by connecting a charger

to the recharging socket:

charger Z502R

GMC-I Messtechnik GmbH 29

Displays

100

Ux/V

/kΩ

= 100 V

100

250

Ux/V

/kΩ

= 250V

100

150

200

250

100

200

300

400

500

= 500V

Ux/V

/kΩ

200

400

600

800

1000

= 1000V

Ux/V

/MΩ

Digital display Multiple display with dot matrix

Limit LED LED lights up red to indicate an exceeded

LED LED lights up red to indicate the presence

Uramp LED LED lights up green to indicate ramp

128 x 128 pixels, backlit (transflective), dimensions: 65 x 65 mm

limit value. LED lights up green to indicate adherence to the limit value.

of an external voltage (with the instrument switched off) or high test voltage during insulation measurement (Riso/Rins, PI and DAR) at the measuring terminals

sequence in progress. LED lights up red to indicate interrupted ramp sequence (e.g. in case of breakdown).

Ambient Conditions

Accuracy temperature range 0 ... +40 °C

Operating temperature Storage temp. range –25 ... +70 °C (without batteries) Relative humidity Up to 75% (max. 85% during storage/

Elevation Max. 2000 m Calibration interval 1 year (recommended)

–10 ... +50 °C

transport), no condensation allowed

Table for determining maximum display values for low-value resistance in consideration of the instrument’s measuring uncertainty.

Limit Value

0.15 Ω 0.11 Ω

0.20 Ω 0.16 Ω 5.00 Ω 4.72 Ω

0.50 Ω 0.44 Ω 10.0 Ω 9.47 Ω

1.00 Ω 0.92 Ω 20.0 Ω 17.7 Ω

2.00 Ω 1.87 Ω 50.0 Ω 44.7 Ω

Maximum

Display Value

Limit Value

Maximum

Display Value

Voltage at Device Under Test During Insulation Resistance Measurement

Measuring voltage Ux at the device under test depending upon its resistance Rx at nominal voltages of 100, 250, 500 and 1000 V:

Mechanical Design

Dimensions 225 x 130 x 140 mm Weight Approx. 1.4 kg with batteries Protection Housing: IP 52, measurement cables and

connectors: IP 40 per DIN VDE 0470, part 1 / EN 60529, housing category 2

Excerpt from Table on the Meaning of IP Codes

IP XY

digit X)

Protection Against Foreign

Object Entry

2 ≥ 12.5 mm dia. 2 Dripping (at 15° angle) 3 ≥ 2.5 mm dia. 3 Spraying water 4 ≥ 1.0 mm dia. 4 Splashing water 5 Dust protected 5 Jet-water 6 Dust-proof 6 Powerful water jets

IP XY

(2nd digit Y)

Protection Against

Penetration by Water

Display Values in Consideration of Measuring Uncertainty

Table for determining minimum display values for insulation resistance in consideration of the instrument’s measuring uncertainty.

Limit Value

020 kΩ 025 kΩ 100 kΩ 111 kΩ 100 MΩ 111 MΩ 200 kΩ 219 kΩ 200 MΩ 219 MΩ 500 kΩ 541 kΩ 500 MΩ 541 MΩ

0.20 MΩ 0.25 MΩ

0.50 MΩ 0.57 MΩ

1.00 MΩ 1.11 MΩ 1.00 GΩ 1.11 GΩ

2.00 MΩ 2.19 MΩ 2.00 GΩ 2.19 GΩ

5.00 MΩ 5.41 MΩ 5.00 GΩ 5.41 GΩ

10.0 MΩ 11.1 MΩ 10.0 GΩ 11.1GΩ

20.0 MΩ 21.9 MΩ 20.0 GΩ 22.6 GΩ

50.0 MΩ 54.1 M

Minimum

Display Value

Ω 50.0 GΩ 55.9 GΩ

Limit Value

Minimum

Display Value

30 GMC-I Messtechnik GmbH

12 Maintenance

Note

Attention!

BAT

12.1 Firmware Revision and Calibration Information

See section 3.4.

12.3 Fuses

If a fuse has blown due to overload, a corresponding error message appears at the display panel. The instrument’s voltage measuring ranges are nevertheless still functional.

12.2 Rechargeable Battery Operation and Charging

Check to make sure that no leakage has occurred at the rechargeable batteries in the Z502H battery pack at short, regular intervals, or after the instrument has been in storage for a lengthy period of time.

Prior to lengthy periods of rest (e. g. holiday), we recommend removing the (rechargeable) batteries. This helps to prevent excessive depletion or leakage of batteries, which, under unfavourable circumstances, may cause damage to the instrument.

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

Use only the Z502H battery pack.

Use only the Z502R charger (available as an accessory) to charge batteries which have already been inserted into the test instrument.

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

– Rechargeable batteries have been installed with

correct polarity (not standard batteries).

– The test instrument has been disconnected from the

measuring circuit at all poles.

– The instrument must remain off during charging.

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

12.2.1 Charging Procedure with the Z502R Charger (accessory)

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

12.3.1 Melting Fuse

This fuse is active in all resistance measuring ranges except for voltage measurement. A replacement fuse is included in the battery compartment (FF315mA/1000V).

Checking the Fuse

If a resistance measuring range is selected with the rotary switch with a blown or defective fuse in the instrument, and if measurement is started with the START or CONTIN. key, a pop-up window with the “blown fuse” icon appears. Prerequisite: The + and COM measurement jacks are not short circuited. This error message must be acknowledged and cleared by pressing the ESC key.

➭ Eliminate the cause of failure and replace the blown fuse.

Replacing the Fuse

Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the fuse (refer to page 3 for location)! The rotary switch must be in the OFF position when the fuse is replaced.

Incorrect fuses may cause sever damage to the instrument. Only original fuses from GMC-I Messtechnik GmbH assure the required protection by means of suitable blowing characteristics. Short-circuiting of fuse terminals or the repair of fuses is prohibited! The instrument may be damaged if fuses with incorrect ampere ratings, breaking capacities or blowing characteristics are used!

➭ Open the battery compartment lid by loosening the two

screws.

➭ Remove the defective fuse and replace it with a new one. A

replacement fuse is included in the battery compartment.

➭ Insert the new fuse. ➭ Replace the battery compartment lid and retighten the

screws.

Make sure that rechargeable batteries have been inserted (not normal batteries). We recommend the use of rechargeable NiMH batteries (eneloop type).

➭ Connect the charger to the test instrument with the barrel

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

Do not switch the test instrument on during charging. Monitoring of the charging process by the microprocessor might otherwise be disturbed, in which case the charging times specified in the technical data can no longer be assured.

➭ Please refer to the operating instructions included with the

charger regarding the meanings of LED displays during the charging process.

➭ Do not disconnect the charger from the test instrument until

the LED lights up green.

GMC-I Messtechnik GmbH 31

This fuse protects low-resistance (Rlo) and resistance measurements (kΩ) from overloading (electronic hardware circuit).

A pop-up window appears when the fuse blows.

This error message must be acknowledged and/or cleared by pressing any desired key.

➭ Eliminate the cause of overloading.

12.3.2 Electronic Fuse

12.4 Housing

Pb Cd Hg

Between each active conductor and ground

PEN

Between each active conductor and the PEN conductor

Between each active conductor (phase and neutral conductors) and ground

PEN

Between each active conductor and the PEN conductor

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.

12.5 Return and Environmentally Sound Disposal

The instrument is a category 9 product (monitoring and control instrument) in accordance with ElektroG (German electrical and electronic device law). This device is subject to the RoHS directive. Furthermore, we make reference to the fact that the current status in this regard can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term WEEE.

In accordance with WEEE 2012/19EU and ElektroG, we identify our electrical and electronic devices with the symbol in accordance with DIN EN 50419 which is shown at the right. Devices identified with this symbol may not be disposed of with the trash. Please contact our service department regarding the return of old devices (see address in section 14).

If the batteries used in your instrument or accessory product are depleted, they must be disposed of properly in accordance with valid national regulations. Batteries may contain pollutants and heavy metals such as lead (Pb), cadmium (Cd) and mercury (Hg).

The symbol at the right indicates that batteries must not be disposed of with the trash, and must be brought to a designated collection point.

13 Appendix

13.1 Sample Connection Layouts for Insulation Resistance Measurement

Insulation Resistance Measurement per DIN VDE 0100, Part 600

32 GMC-I Messtechnik GmbH

Insulation Resistance Measurement in Different Types of Systems

TN–S

• With or without consumer

•N – PE, separately

TN–C

• With or without consumer

• N – PE, together

• With or without consumer

3-phase current (switched at all poles)

Attention:

– Open the overcurrent protective device – Disconnect the N conductor – Jumper the L and N conductors – Insulation measurement between L conductors and N to PE – Device switch can be open – if single-pole

In the distributor: individual and combined measurements

GMC-I Messtechnik GmbH 33

13.2 Error Messages

The following pop-up windows must be acknowledged and/or cleared by any desired key and the cause of the error must be eliminated.

Pop-Up Function Switch

Function / Meaning

Position

Interference voltage

All except U

Remedy: Device under test must be disconnected from all sources of voltage.

OFFSET measurement does not make sense. Remedy: Check system. OFFSET measurement of RLO+ and RLO– is still possible.

INS

/ kΩ / R

/ kΩ

All

OFFSET

> 50 Ω:

OFFSET measurement does not make sense. Remedy: Check system.

Externally accessible fuse is blown. The voltage ranges remain functional even if the fuse has blown.

Special case, R

blown fuse.

: Interference voltage during measurement may result in a

Remedy: Replace fuse (replacement fuse in battery compartment).

Observe notes regarding fuse replacement in section 12.3.1.

The electronic fuse protects low-resistance (Rlo) and resistance measurements (kΩ) from overloading (electronic hardware circuit).

The voltage ranges remain functional even if the fuse has blown. Remedy: This error message must be acknowledged and cleared by

pressing the ESC key. 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.

34 GMC-I Messtechnik GmbH

Pop-Up Function Switch

Position

Database and Entry Operations

All

All Please enter a designation (alphanumeric).

All

Function / Meaning

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 parameter settings.

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

voltage is less than 8 V. Output voltage is generally switched off during barcode scanner operation if U is less than 8 V in order to assure that remaining battery capacity is adequate for entering designations for devices under test and saving the measurement.

Remedy: Rechargeable batteries must be recharged, or replaced towards the end of their service life.

Operation with a Barcode Scanner Current flowing through the RS 232 port is too high. Remedy: The connected device is not suitable for this port.

All

SETUP

Operation with a Barcode Scanner Barcode not recognized, incorrect syntax

Data cannot be entered at this location within the structure. Remedy: Observe profile for preselected PC software (see SETUP menu).

Measured value cannot be saved at this location within the structure. Remedy: Make sure that you have selected the right profile for you PC

evaluation program in the SETUP menu (see section 3.4).

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.

This prompt window asks you to confirm deletion.

Data loss after changing language or profile, or after restoring default settings.

Back up your measurement data to a PC before pressing the respective key.

This prompt window asks you to confirm deletion.

GMC-I Messtechnik GmbH 35

13.3 Attaching the Test Probe Holder to the Carrying Strap 13.4 Technical Data for Measurement Cables

Attention!

Bottom Right

Detach the strap from the instrument: Turn out the slotted screw (M3) at the bottom.

Bottom Left

Strap

Clasp

Front View

Slide the strap through the test probe holder.

Eyelet for Attachment to Tester

Side View

(METRISO INTRO, BASE, TECH, PRO, XTRA)

Front

Feed the strap through from the front of the test instrument and secure it with the slotted screw (M3).

Back

(scope of delivery: KS17-4 safety cable set)

Electrical Safety

Maximum rated voltage 600 V

Measuring category

Max. rated current: 1 A 1 A 16 A With safety cap attached Without safety cap ——

CAT IV CAT III CAT II

••

Ambient Conditions (EN 61010-031)

Temp erature – 20 °C ... + 50 °C Relative humidity Max. 80% Pollution degree

Using the KS17-4

Observe the instrument’s maximum values for electrical safety.

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).

1000 V

—

•

36 GMC-I Messtechnik GmbH

13.5 Optional Accessories (not included)

Master Battery Pack (material no. Z502H)

8 LSD NiMH rechargeable batteries with reduced selfdischarging (AA) (eneloop/Sanyo), 2000 mAh with sealed cells

Charger (material no. Z502R)

Broad-range charger for charging batteries in the measuring instrument Input: 100 to 240 V AC, output: 16.5 V DC, 0.6 A

IS0 Calibrator 1 (material no. M662A)

Calibration adapter for testing the accuracy of instruments used for measuring insulation resistance and low-resistance for test voltages of up to 1000 V (per VDE 0413, parts 1, 2, 4 and 10).

KS-C (material no. Z541F)

Cable set consisting of measurement cable and shielded high-resistance measurement cable for measurements in the GΩ range

1081 Probe (material no. GTZ3196000R0001)

Triangular probe for floor measurements per EN 1081, DIN VDE 0100-600 (standing surface insulation)

KS24 (material no. GTZ3201000R0001)

Cable set consisting of a 4 m long extension cable with a permanently attached test probe at one end and a contact protected socket at the other end, and 1 alligator clip which can be plugged onto the test probe.

Test Probe for Remote Triggering

(material no. Z550A) Optional plug-on measurement cable with a triggering key on the test probe and an additional key for illuminating the measuring point, including shielded, plug-in connector cable.

Barcode-Profiscanner-RS232

(material no. Z502F) Barcode scanner for RS 232 connection (laser sensor), variable barcode length, enhanced reading accuracy, with coil cable

Barcodeleser B3261

(material no. GTZ3261000R0001) Barcode scanner for RS 232 connection (LED sensor)

SCANBASE RFID

(material no. Z751G) RFID read/write for RS 232 port (13.56 MHz)

GMC-I Messtechnik GmbH 37

14 Repair and Replacement Parts Service

Calibration Center* and Rental Instrument Service

If required please contact:

GMC-I Service GmbH Service-Center Thomas-Mann-Strasse 16-20 90471 Nürnberg • Germany Phone: +49 911 817718-0 Fax: +49 911 817718-253 E-mail service@gossenmetrawatt.com www.gmci-service.com

This address is only valid in Germany. Please contact our representatives or subsidiaries for service in other countries.

* DAkkS Calibration Laboratory for Electrical Quantities

D-K-15080-01-01 accredited per DIN EN ISO/IEC 17025

Accredited quantities: direct voltage, direct current value, direct current resistance, alternating voltage, alternating current value, AC active power, AC apparent power, DC power, capacitance, frequency and temperature

Competent Partner

GMC-I Messtechnik GmbH is certified in accordance with DINENISO9001.

Our DAkkS calibration laboratory is accredited by the Deutsche Akkreditierungsstelle GmbH (National accreditation body for the Federal Republic of Germany) in accordance with DIN EN ISO/IEC 17025 under registration number D-K-15080-01-01.

We offer a complete range of expertise in the field of metrology: from test reports and proprietary calibration certificates right on up to DAkkS calibration certificates.

Our spectrum of offerings is rounded out with free test equipment management.

An on-site DAkkS calibration station is an integral part of our service department. If errors are discovered during calibration, our specialized personnel are capable of completing repairs using original replacement parts.

As a full service calibration laboratory, we can calibrate instruments from other manufacturers as well.

15 Recalibration

The measuring tasks performed with your instrument, and the stressing it’s subjected to, influence aging of its components and may result in deviation from the specified levels of accuracy.

In the case of strict measuring accuracy requirements, as well as in the event of use at construction sites with frequent stress due to transport and considerable temperature fluctuation, we recommend a relatively short calibration interval of once per year. If your instrument is used primarily in the laboratory and indoors without considerable climatic or mechanical stressing, a calibration interval of once every 2 to 3 years is sufficient as a rule.

During recalibration* at an accredited calibration laboratory (DIN EN ISO/IEC 17025), deviations from traceable standards demonstrated by your measuring instrument are documented. Ascertained deviations are used to correct displayed values during later use of the instrument.

We would be happy to perform DAkkS or factory calibration for you at our calibration laboratory. Further information is available at our website:

www.gossenmetrawatt.com (→ Company → DAkkS Calibration Center or → FAQs → Questions and Answers Regarding Calibration).

Recalibration of your instrument at regular intervals is essential for the fulfillment of requirements according to quality management systems per DIN EN ISO 9001.

* Examination of the specification, as well as adjustment, are not included

in calibration. However, in the case of our own products, any required adjustment is performed and adherence to the specification is confirmed.

16 Product Support

If required please contact:

GMC-I Messtechnik GmbH

Product Support Hotline

Phone: +49-911-8602-0 Fax: +49 911 8602-709 E-mail: support@gossenmetrawatt.com

Edited in Germany • Subject to change without notice • PDF version available on the Internet

GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg

• Germany

Phone: +49 911 8602-111 Fax: +49 911 8602-777 E-mail: info@gossenmetrawatt.com www.gossenmetrawatt.com

Gossen Metrawatt METRISO XTRA Operating Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Applications

1.2 Overview of Measuring Instrument Performance Features

1.1 Optional Z550A Remote Control

2 Safety Features and Precautions

3.2 Installing or Replacing Batteries

3 Initial Start-Up

3.1 Battery test

3.3 Charging the Batteries in the Tester

3.4 Device Settings – SETUP

4 General Operation

4.1 Connecting the Instrument

4.3 Optical Indicators

4.2 Switching On, Monitoring and Switching Off

4.4 Measurement Value Display and Memory

4.5 Help Function

4.6 Setting Measuring Parameters using Insulation Resistance Measurement as an Example

4.7 Specifying Nominal Voltage for Uvar and Uramp

5 Measuring Direct Alternating Voltage

6 Measuring Insulation Resistance

6.2 Measurement with Constant Test Voltage and Variably Adjustable Nominal Value

6.4 Insulation Resistance Measurement – Special Conditions

6.4.1 Measurements with the Guard Cable

6.5 Discharging the Device Under Test

6.6 Evaluation of Measured Values

6.7 Polarization Index Measurement

6.7.1 Absorption Index (DAR) – DC Charging Test

8 Measuring Resistance – kOhm Function

10 Database

10.1 Creating Distributor Structures, General

10.2 Transferring Distributor Structures

10.3 Creating a Distributor Structure in the Test Instrument

10.3.1 Creating Structures (example for electrical circuit)

10.3.2 Searching for Structural Elements

10.4 Saving Data and Generating Reports

10.4.1 Use of Barcode Scanners and RFID Readers

11 Characteristic Values

12 Maintenance

12.1 Firmware Revision and Calibration Information

12.3 Fuses

12.2 Rechargeable Battery Operation and Charging

12.2.1 Charging Procedure with the Z502R Charger (accessory)

12.3.1 Melting Fuse

12.3.2 Electronic Fuse

12.4 Housing

12.5 Return and Environmentally Sound Disposal

13 Appendix

13.1 Sample Connection Layouts for Insulation Resistance Measurement

13.2 Error Messages

13.3 Attaching the Test Probe Holder to the Carrying Strap 13.4 Technical Data for Measurement Cables

13.5 Optional Accessories (not included)

15 Recalibration

16 Product Support