Gossen MetraWatt PROFITEST 2 DIN VDE 0100 Operating Instructions Manual

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Operating Instructions

PROFITEST2

Tester DIN VDE 0100

3-349-491-03

8/12.14

Page 2

56789101112 1314

17181920

2 GMC-I Messtechnik GmbH

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34 33

29 30 31 32

24 23

1 LC Display Field

/ i Key

N

3Start Key  4Menu Key 5 PE Lamp 6 NETZ/MAINS Lamp

L/RL

Lamp

7U 8 FI/RCD Lamp

9 Function Selector Switch 10 Shoulder Strap 11 Test Plug Holder

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12 Measuring Adapter (2-pole) 13 Plug Insert

(country specific)

14 Test Plug

(with retainer ring)

15 Alligator Clip

(plug-on)

16 Test Probes 17 Start Key  18 Key I 19 Contact Surfaces 20 Probe Connector Socket

21 Strap Eyelets 22 Swivel Hinge 23 Replacement Fuses 24 Fuses 25 Fold-Out Stand 26 Serial Plate 27 Battery Holder 28 Battery Compartment Lid 29 Measurement Value 1,

Abbreviated

30 Abbreviation for Selected

Sub-Function

31 Three Place Numeric Display: Measure-

32 Three Place Numeric Display: Measure-

33 Abbreviation for Selected Sub-Function,

34 Measurement Value 2, Abbreviated 35 Charging Socket / Current Transformer

ment Value 1 with Unit of Measure

ment Value 2 with Unit of Measure

Messages and Help

Connector Jack

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Contents Page Contents Page

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

7.3 Testing for Special RCDs ...............................................................25

7.3.1 Systems with Selective RCDs ......................................................... 25

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

7.3.2 Type G RCCBs ..............................................................................27

7.4 Testing with Adjustable Residual Current ........................................28

3 Initial Start-Up ..............................................................................8

3.1 Installing or Replacing Batteries .......................................................8

7.5 Testing RCDs in IT Systems ...........................................................28

7.6 Testing Residual Current Circuit Breakers in TN-S Systems .............30

3.2 Selecting a Language, Basic Function and Sub-Function Settings ......8

3.3 Battery Test ....................................................................................9

3.4 Recharging the rechargeable Batteries ...........................................10

4 Abbreviated Instructions for Quick Initial Start-Up .....................12

5 General Instructions ...................................................................14

5.1 Connecting the Instrument .............................................................14

5.2 Automatic Settings, Monitoring and Shut-Off ..................................14

5.3 Measurement Value Display ...........................................................15

5.4 Testing Earthing Contact Sockets for Correct Connection .................15

5.5 Help Function ...............................................................................16

Testing of Breaking Requirements for Overcurrent Protective Devices,

Measurement of Loop Impedance and Determination of ShortCircuit Current (functions Z

and IK) ......................................31

Loop

8.1 Measurement with Positive or Negative Half-Waves ........................32

8.2 Evaluation of Measurement Values .................................................33

8.3 Loop Impedance Measurement

– Measurement via and without tripping the RCCB .........................33

8.4 Testing Meter Start-Up with the Adapter ......................................... 34

9 Measuring Supply Impedance (function Z

) ................................35

9.1 Testing Meter Start-Up with Earthing Contact Adapter .....................36

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

6.1 Voltage between L and N (U

) .....................................................16

L-N

6.2 Voltage between L and PE, N and PE, as well as L and N ................17

6.3 Voltage between the Probe and PE (U

) ......................................18

S-PE

10 Earthing Resistance Measurement (function R

) .......................37

10.1 Measuring with Probe ...................................................................38

10.2 Measuring without Probe ...............................................................38

10.3 Evaluation of Measurement Values .................................................39

6.4 Measuring Current with a Clip-On Current Transformer ...................18

11 Measuring Insulation Resistance

7 Testing RCDs ..............................................................................20

7.1 Measuring Contact Voltage (with reference to nominal residual current) with 1/3 Nominal Residual Current and Tripping Test with Nominal Re-

sidual Current ...............................................................................20

(Function R

11.1 Insulation Measurement with Rising Test Voltage ............................ 41

11.2 Evaluation of Measurement Values .................................................42

11.3 Setting the Limit Value ..................................................................42

) ............................................................................40

ISO

7.2 Special Testing for Systems and RCCBs .........................................23

7.2.1 Testing for Systems and RCCBs with Rising Residual Current ..........23

7.2.2 Testing of RCCBs which are Suited for

Pulsating DC Residual Current .......................................................24

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Contents Page Contents Page 12 Measuring Low-Value Resistance of up to 100 

(protective conductor and bonding conductor) .......................... 42

12.1 Measuring Low-Value Resistance (function RLO) ............................. 42

12.2 Compensation for Extension Cables of up to 10  (function R

) ............................................................................ 44

12.3 Calculation of Cable Lengths for Common

Copper Conductors ....................................................................... 45

17 Appendix .................................................................................... 61

17.1 Table 1 ........................................................................................ 61

17.2 Table 2 ........................................................................................ 61

17.3 Table 3 ....................................................................................... 62

17.4 Table 4 ....................................................................................... 62

17.5 Table 5 ........................................................................................ 63

17.6 List of Abbreviations and their Meanings ........................................ 64

12.4 Setting the Limit Value ..................................................................45

18 Repair and Replacement Parts Service

13 Phase Sequence Testing ............................................................ 46

Calibration Center and Rental Instrument Service .......................... 65

14 Operating and Display Elements ................................................47

15 Characteristic Values ................................................................ 52

19 Recalibration .............................................................................. 65

20 Product Support ......................................................................... 66

15.1 Lamp Functions ............................................................................ 56

16 Maintenance ..............................................................................57

16.1 Self-Test ...................................................................................... 57

16.2 Battery and Rechargeable Battery Operation, and Charging ............. 59

16.3 Fuses .......................................................................................... 60

16.4 Housing ....................................................................................... 60

16.5 Device Return and Environmentally Compatible Disposal .................60

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1 Applications

–

The PROFITEST 2 test instrument allows for quick and effective testing of protective measures in accordance with DIN VDE 0100 part 610:2004, ÖVE-EN 1 (Austria), NIV/NIN SEV 1000 (Switzerland), as well as regulations specific to additional countries. The device is equipped with a microprocessor and complies with IEC 61557/EN 61557/VDE 0413 regulations:

Part 1: General requirements Part 2: Insulation resistance testers Part 3: Loop resistance testers Part 4: Instruments for the measurement of resistance at earth-

ing conductors, protective conductors and bonding con-

ductors Part 5: Earthing resistance testers Part 6: Instruments for the testing of proper functioning of resid-

ual current devices (RCDs) and the effectiveness of pro-

tective measures in TT and TN systems Part 7: Phase sequence testers Part 10: Electrical safety in low-voltage systems It is especially suited for:

•Systems set-up

• Initial start-up

• Periodic testing

• Troubleshooting for electrical systems All measurement values required for approval reports (e.g. ZVEH)

can be acquired with the instrument. The applications range of the PROFITEST 2 covers all alternating

and three-phase current systems with nominal voltages of 230 V (240 V if “English/UK-parameter” has been selected in setup) /

400 V (300 V / 500 V) and nominal frequencies of 162/3/ 50 /

60 / 200 / 400 Hz.

The following measurements and tests can be performed with the PROFITEST 2:

• Voltage / frequency / phase sequence

• Loop impedance / line impedance

• RCD protection

• Earthing resistance

• Insulation resistance

• Low-value resistance (potential equalization)

• Leakage currents with clip-on current transformer

• Meter start-up

•Cable length

Meaning of Symbols on the Instrument

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

Safety class II device

9 V DC charging socket for battery charger

This device and the inserted (rechargeable) batteries may not be disposed of with the trash.e trash. Further information regarding the WEEE mark can be accessed on the Internet at www.gossenmetrawatt.com by entering the search term ’WEEE’.

EC label of conformity

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2 Safety Features and Precautions

Note

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

The PROFITEST 2 electronic measuring and test instrument is manufactured and tested in accordance with safety regulations IEC 61010-1/EN 61010-1/VDE 0411-1.

When used for its intended purpose, safety of the operator, as well as that of the instrument, is assured.

Read the operating instructions thoroughly and carefully before placing your instrument into service, and follow all instructions contained therein. Make sure that the operating instructions are available to all users of the instrument.

Tests may only be performed under the supervision of a qualified electrician. The user must be instructed by a qualified electrician concerning performance and evaluation of the test.

Manufacturers and importers of electrical medical devices must provide documentation for the performance of maintenance by trained personnel.

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

• if the battery compartment lid has been removed

• if external damage is apparent

• if connector cable or measuring adapters are damaged

• if the instrument no longer functions flawlessly

• after a long period of storage under unfavorable conditions (e.g. moisture, dust, extreme temperatures).

Exclusion of Liability

When testing systems with RCCBs, the latter may switch off. This may occur even though the test does not normally provide for it. Leakage currents may be present which, in combination with the test current of the test instrument, exceed the shutdown threshold value of the RCCB. PCs which are operated in proximity to such RCCB systems may switch off as a consequence. This may result in inadvertent loss of data. Before conducting the test, precautions should therefore be taken to ensure that all data and programs are adequately saved and the computer should be switched off, if necessary. The manufacturer of the test instrument assumes no liability for any direct or indirect damage to equipment, computers, peripheral equipment or data bases when performing the tests.

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.

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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.

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3 Initial Start-Up

Attention!

Note

Attention!

START MENU

L-N

3.1 Installing or Replacing Batteries

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

Six commercially available 1.5 V mignon cells in accordance with IEC LR 6 are required for operation of the PROFITEST 2.

Only alkaline manganese cells may be used which comply with IEC LR 6. The use of zinc-carbon batteries is to be avoided due their short service life.

3.2 Selecting a Language, Basic Function and Sub-Function Settings

Rechargeable NiCd or NiMH cells may also be used. See also chapter 16.2 on page 59 concerning charging and the battery charger.

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

Ð Loosen the slotted screw at the Battery Compartment Lid (28)

and remove the lid.

Ð Pull the Battery Holder (27) out with the strap and insert six

1.5 V mignon cells with plus and minus poles in accordance with the symbols on the holder.

Ð Insert the Battery Holder (27) with batteries into the battery

compartment (strap must be positioned beneath the holder). The holder can only be inserted in its proper position.

Ð Replace the lid and retighten the screw.

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

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Any of the available languages can be selected by pressing the Menu Key (4).

If the “English/UK-parameter” has been selected, the following differences apply to the other menu items:

• Nominal voltage of 240 V instead of 230 V

• RCD trip test includes 2 sec. at 50% (nominal fault)

current before RCD is tripped

• No autom. change Phase to Neutral for socket outlets wired incorrectly

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By pressing the Menu Key (4), you can determine whether the

Note

START MENU

START

Note

L-N

basic instrument functions are made available when the instrument is switched on, or if the last selected sub-function is made available for immediate measurement.

The basic functions are selected automatically if the Function Selector Switch (9) has been activated. If the device is in self-test mode, self-testing must first be completed!

Display Illumination

Display illumination can be deactivated by pressing the Menu Key (4) in order to extend the service life of the batteries.

On-Time

The period of time after which the test instrument is automatically shut off can be selected here with the Menu Key (4).

3.3 Battery Test

Batteries or rechargeable batteries are tested under load conditions. When the Start Key  (3 or 17) is activated, the NETZ/MAINS, UL/RL and FI/RCD lamps light up briefly for this reason.

The selected on-time has as substantial influence on battery service life.

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If battery voltage has fallen

Attention!

below the allowable lower limit, the symbol to the right appears:

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

3.4 Recharging the rechargeable Batteries

Use only the NA101 (article no. Z501M) battery charger with reliable electrical insolation for the recharging of batteries. Before connecting the charger to the charging socket make certain that: – Rechargeable batteries have been installed

(not standard batteries)

– The instrument has been disconnected from the

measuring circuit at all poles

Connect the NA101 battery charger to the charging socket at the side of the housing bottom with the 3.5 mm jack plug.

Charging is started with the same procedure as used for the battery test. The instrument detects the presence of the charger and initiates the charging process.

Depleted batteries (display < 6 V) require approximately 4 hours for complete charging. The test instrument cannot be switched on if the batteries are severely depleted. In such a case, leave the instrument switched on with battery charger connected for about 30 minutes, and then proceed as described above.

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4 Abbreviated Instructions for Quick Initial Start-Up

L-NUL-PE

N

10 mA

N

30 mA

The performance of measurements and testing with the PROFITEST 2 is quick and easy.

The integrated on-line help and the abbreviated instructions are sufficient for most measurements. Nevertheless, you should read and observe the instructions which follow these abbreviated instructions as well.

Term in ol og y

Basic Function The basic functions are selected with the Func-

tion Selector Switch (9). The basic function is the first entry in the menu window and is automatically selected when the function selector switch is activated.

Sub-Function Functions which are subordinate to the basic

function in the menu window. Sub-functions are selected with the yellow Menu Key (4), and are subsequently highlighted with the arrow.

Measurements can be performed as follows for all measuring functions:

ò Select the basic function with the Function Selector Switch (9)

Ð Turn the Function Selector Switch (9) to the desired basic func-

tion.

After a basic function or a sub-function has been selected as described below, the corresponding circuit diagram can be queried at the LC Display Field (1) by pressing the IN / i key (2 or 18).

ä Selecting a basic function or a sub-function with the Menu Key (4)

When the Menu Key (4) is first activated, the instrument is switched on. The basic function and its corresponding sub-functions are displayed in the menu:

ù Connect the test instrument

Ð Connect the Test Plug (14) with attached Plug Insert (13) to the

mains outlet, or connect the instrument directly in a 2-pole mannerwith the plug-on Measuring Adapter (2-pole) (12).

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Ð Repeatedly press the Menu Key (4) until the arrow points to the

IN100 mA I

N

300 mA

N

500 mA

Loop

ZIRER

ISORLO

desired function.

On-line help can be queried for any selected function with the I

/ i keys (2 or 18).

N

The selection of a function is not necessary if basic functions and sub-functions have been pre-configured as described.

ë Start measurement with the Start Key  (3 or 17) and

read measurement results

Ð Press the I

the instrument has shut itself off automatically) in order to perform the tripping test for RCCBs.

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key (2 or 18) during the on-time period (before

N

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5 General Instructions

5.1 Connecting the Instrument

For systems with earthing contact sockets, connect the instrument with the Test Plug (14), on which the Plug Insert (13) is attached, to the mains. Voltage between phase conductor L and the PE protective conductor may not exceed 253 V! Poling at the socket need not be taken into consideration. The instrument detects the positions of phase conductor L and neutral conductor N, and automatically reverses poles if necessary. This does not apply to the following measurements:

– Voltage measurement in selector switch position U – Insulation resistance measurement – Low-value resistance measurement – Phase sequence testing – Selection of “English/UK-parameter” in setup. In this case no

automatic pole reversal occurs.

The positions of phase conductor L and neutral conductor N are identified at the Plug Insert (13).

If measurement is to be performed at three-phase outlets, at distribution cabinets or at permanent connections, the Measuring Adapter (2-pole) (12) must be fastened to the Test Plug (14) (see also chapter 15.1). Connection is established with the test probes: one at PE or N and the other at L.

The 2-pole measuring adapter must be expanded to 3 poles with the included measurement cable for the performance of phase sequence testing. Measurements with the Measuring Adapter (2pole) (12) are not possible with the Function Selector Switch (9) in the U in selector switch positions U

or ZI positions. These measurements can be performed

L-N

L-PE

and Z

Loop

Contact voltage (during RCCB testing) and earthing resistance can be, probe voltage and RCCB performance in IT systems must be measured with a probe. The probe is connected to the Probe Connector Socket (20) with a 4 mm contact protected plug.

L-PE

5.2 Automatic Settings, Monitoring and Shut-Off

The PROFITEST 2 automatically sets all operating conditions which it is able to determine itself. It tests line voltage and frequency. If these lie within their valid nominal ranges, they appear at the LC Display Field (1). If they are not within nominal ranges, prevailing voltage (U) and frequency (f) are displayed instead of U

Line voltage fluctuations have no effect on measurement results. Contact voltage which is induced by test current is monitored for

each measuring sequence. If contact voltage exceeds the limit value of > 25 V or > 50 V, measurement is immediately interrupted. The UL (7) lamp lights up red.

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

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

• non-allowable 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 resis-

tance measurements

• overheating at the instrument.

As a rule, excessive temperatures only occur after approximately 500 measurement sequences at intervals of 5 s, when the Function Selector Switch (9) is set to the Z tion. If an attempt is made to start a measuring sequence, an appropriate message appears at the LC Display Field (1).

or ZI posi-

Loop

and fN.

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The instrument only switches itself off automatically after comple-

Note

Attention!

tion of an automatic measuring sequence, and after the predetermined on-time has expired (see chapter 3.2). On-time is reset to its original value as defined in the setup menu, as soon as any key or the Function Selector Switch (9) 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!

5.3 Measurement Value Display

The following appear at the LC Display Field (1):

• Measurement values with abbreviations and units of measure

• Selected function

• Nominal voltage

• Nominal frequency

• Error messages Measurement values for automatic measuring sequences are

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

5.4 Testing Earthing Contact Sockets for Correct Connection

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

• Non-allowable line voltage (< 60 V or > 253 V): The NETZ/MAINS Lamp (6) blinks red and the measuring sequence is blocked.

• Protective conductor not connected or potential to earth  100 V at f >

45 Hz: The PE Lamp (5) lights up red when contact is made with the Contact Surfaces (19).

The measurement is not blocked when the lamp is lit. It does not light up, i.e. is not functional, when the instrument is switched on and the Function Selector Switch (9) is in the U or the Z

position (see Lamp Functions on page 56).

L-N

If the instrument is off and the selector switch is in the U

or the ZI position, the red PE lamp may light up if

L-N

contact is made with the Contact Surfaces (19), and if the terminal designated N at the plug insert is connected to the phase conductor at the socket.

• Neutral conductor N not connected: The NETZ/MAINS Lamp (6) blinks green (see Lamp Functions on page 56).

• One of the two protective contacts is not connected: Testing for this condition is performed automatically for the FI, Z

, Z

and RE functions. Poor contact resistance at one of

Loop

the contacts leads to one of the following displays depending upon poling of the plug:

– A value of only approximately half the anticipated line voltage

is displayed.

– A “STOP-sign” with the following warning appears: “Earthing

resistance to high or defective fuse”.

Reversal of N and PE in a system without RCCBs cannot be detected and is not indicated by the instrument. If an RCCB is present in the system, it is tripped during Z measurement if N and PE have been reversed.

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5.5 Help Function

START

Note

N

L-N

The appropriate circuit diagrams and on-line help can be queried at the LC Display Field (1) for each of the basic functions and subfunctions, after these have been selected in the corresponding menu.

Press the I diagram. Press the same key again to alternate between the circuit diagram and on-line help.

Press the Menu Key (4) to exit the help function.

/ i key (2 or 17) once to display the circuit

N

6 Measuring Alternating Voltage and Frequency

6.1 Voltage between L and N (U

Set-Up

L-N

)

Measurements cannot be made with the Measuring Adapter (2-pole) (12) in the U

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function!

L-N

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6.2 Voltage between L and PE, N and PE, as well as L and N

START

N

L-PE

Set-Up

The display is switched to the other two voltages measured at the socket by pressing the I be recalled by pressing the START key.

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/ i key. The previous display can only

N

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6.3 Voltage between the Probe and PE (U

START

Attention!

L-PE

Set-Up

S-PE

)

6.4 Measuring Current with a Clip-On Current Transformer

Bias, leakage and circulating current to 1 A, as well as leakage current to 150 A can be measured with the help of the 0100S Clip, special clip-on current transformer, which is connected at the charging socket.

High-Voltage Danger!

Use only the above mentioned clip-on current transformer. Other current clips may not be terminated with an output load at the secondary side. Dangerously high voltage may endanger the user and the device in such cases.

The maximum allowable operating voltage is equal to the nominal voltage of the current transformer. Take additional display error into consideration when reading the measurement value.

Do not, under any circumstances, connect any accessories to the charging socket which have not been recommended and approved by GMC-I Messtechnik GmbH! The instrument and the user may otherwise be endangered and may suffer damage or injury.

All other instrument test functions are blocked if the clip-on current transformer or the battery charger is connected. If you nevertheless attempt to activate another function, the following message appears: “remove adapter”. No testing is performed. After the clip-on current transformer or the battery charger has been removed, this message disappears automatically for functions involving long-term measurements (e.g. voltage measurement). For other functions it disappears as soon as a new measurement is started, or when a new function is selected.

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If no clip-on current transformer has been connected for the IL or I

START

L-PE

AMP.

CLIP0100s

function, the following message appears: “use current clip”. Set-Up

AMP

The switch position at the respective clip-on current transformer must be matched to the ranges of the selected measuring parameter, I

Measuring Range Tester CLIP0100S Z3512A *

* Connection via CLIP-ON adapter cable (Z501G);

ranges b and c not possible in this case.

AMP.

or I

AMP.

5 mA ... 1.0 A 1 mA... 15 A d: 1 mA ... 1 A

10 ... 150 A 1 A ... 150 A a: 1 ... 1000 A

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7 Testing RCDs

Attention!

The testing of residual current devices (RCDs) includes:

• Visual inspection

•Testing

•Measurement The PROFITEST 2 is used for testing and measurement. Measure-

ments can be performed with or without a probe. However, a probe is always required for measurements in IT systems.

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 resistance area of the earth electrode (RE) at the RCD.

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.

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

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

function. See also chapter 6.3 on page 18.

PROBE

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

/3 Nominal Residual Current and

Tripping Test with Nominal Residual Current

Set-Up

Measuring Method

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

– Contact voltage occurring at nominal residual current may not

exceed the maximum allowable value for the system.

– Tripping of the RCCB must occur within 400 ms

(1000 ms for selective RCDs) at nominal residual current.

1) Measurement of Contact Voltage

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

This measuring method is especially advantageous, because contact voltage can be measured quickly and easily at any electrical outlet without tripping the RCCB.

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

IN

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Contact voltage U

Note

Attention!

Note

N

10 mA

N

30 mA

appear at the LC Display Field (1).

and calculated earthing resistance RE

IN

Displayed earthing resistance RE is measured with relatively little current and may thus be inaccurate where small values are involved. Use the RE selector switch position for accurate determination of earthing resistance.

After contact voltage has been measured, testing can be performed to determine whether or not the RCCB is tripped within 400 ms, or 1000 ms, at nominal residual current.

If the RCCB is tripped at nominal residual current, time to trip and earthing resistance are displayed.

If the RCCB is not tripped at nominal residual current, FI/RCD Lamp (8) lights up red.

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

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

Interference voltages at protective conductor PE, at the earth electrode or at the probe (if properly connected) have no influence on measurement results. Interference voltages can be measured with the Measuring Adapter (2-pole) (12) by means of voltage measurement. If bias currents should occur, these can be measured with the help of a clip-on current transformer as described in chapter 6.4 on page 18. The RCCB may be tripped during the testing of contact voltage if extremely large bias currents are present within the system, or if a test current was selected which is too great for the RCCB. In such cases, the following message appears: “check test set-up”.

If the “English/UK parameter” has been selected in setup, a 2 second test at 50% nominal residual current is performed before the RCD is tripped. If the RCD trips within this test period, the FI/RCD Lamp (8) also lights up red, and no trip delay is displayed.

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START

If contact voltage U

Note

N

IN100 mA I

N

300 mA

N

500 mA

nal residual current I the U

(7) lamp lights up red.

L/RL

If contact voltage U sequence, safety shut-down occurs. See also Note „Safety Shut-

, which has been measured with 1/3 nomi-

IN

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

N

exceeds 50 V (25 V) during the measuring

IN

down“ on page 22. Contact voltages of up to 70 V are displayed. If contact voltage is

greater than 70 V, U

> 70 V is displayed.

IN

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 Perform measurement upstream from the RCCB in order

position.

to prevent it from tripping in the case of the high measuring currents used in this context.

Limit Values for Allowable, Continuous Contact Voltage

The limit for allowable, continuous contact voltage is equal to U

= 50 V for alternating voltages (international agreement).

Lower values have been established for special applications (e.g. medical applications UL=25V).

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

2) Tripping Test after the Measurement of Contact Voltage

Ð Press the I

(approximately 30 s).

key (2 or 18) before on-time has expired

N

If the RCCB is tripped at nominal residual current, the NETZ/ MAINS Lamp (6) blinks red (line voltage disconnected), and time to trip t Field (1).

and earthing resistance RE appear at the LC Display

22 GMC-I Messtechnik GmbH

Page 23

If the IN key (2 or 18) is pressed again, the previous display

Attention!

Note

N

10 mA

N

30 mA

appears at LC Display Field (1) for about 3 s. If the RCCB is not tripped at nominal residual current, the FI/RCD

Lamp (8) lights up red.

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

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

Voltage peaks may occur within the measuring circuit if inductive consumers are shut down during an RCCB trip test. If this is the case, the test instrument may display the following message: “Check test setup”. 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.

7.2 Special Testing for Systems and RCCBs

7.2.1 Testing for Systems and RCCBs with Rising Residual Current

Measuring Method

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

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

Set-Up

within the system for the testing of RCDs.

N

=25V or UL=50V,

GMC-I Messtechnik GmbH 23

Page 24

START

Measuring Sequence

Attention!

N

100 mA

N

300 mA

N

500 mA

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 rise can be observed at the horizontal bar display.

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

=50V or

UL/RL (7) Lamp lights up red. If the RCCB is not tripped before the rising current reaches nomi-

nal residual current I

, the FI/RCD Lamp (8) lights up red.

N

If bias current is present within the system during measurement, it is superimposed onto the residual current which is generated by the instrument and influences measured values for contact voltage and tripping current. See also note on page 21.

According to DIN VDE 0100, Part 610, rising residual current must, however, be used for measurements in the evaluation of RCDs, and contact voltage at nominal residual current I be calculated from the measured values.

N

must

The faster, more simple measuring method should thus be taken advantage of (see chapter 7.1).

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

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

Press and * hold the key!

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N

Note

7.3 Testing for Special RCDs

N

100 mA

N

300 mA

N

500 mA

Press and * hold the key!

According to DIN EN 50178 (VDE 160), RCCBs of type B (AC-DC sensitive) are sufficient for devices > 4 kVA, which are capable of generating smooth DC fault currents (e.g. frequency converters). Tests with pulsating DC fault currents are not suitable for these RCCBs. For this purpose we recommend the PROFiTESTDC-II adapter.

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.

* Press the key repeatedly until the symbol for positive or negative

pulsating DC current appears.

7.3.1 Systems with Selective RCDs

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

Measuring Method

The same measuring method is used as for standard RCCBs (see points 7.1 on page 20 and 7.2.1 on page 23).

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

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

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Page 26

START

Tripping Test

Note

START

Ð Press the I

glass appears at the LC Display Field (1), which is followed by

key (2 or 18). The RCCB is tripped. The hour

N

the display of time to trip tA and earthing resistance RE.

Selective RCDs demonstrate delayed response characteristics. Tripping performance is briefly influenced (up to 30 s) due to pre-loading during measurement of contact voltage. In order to eliminate pre-loading caused by the measurement of contact voltage, a waiting period must

If the IN key (2 or 18) is activated again, the LC Display Field (1) returns to the U

display.

IN

be observed prior to the tripping test. After the measuring sequence has been started (tripping test), the hour glass appears in the LC Display Field (1). Times of up to 1000 ms are allowable.

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7.3.2 Type G RCCBs

Note

N

10 mA

N

30 mA

In addition to standard RCCBs and selective RCDs, the special characteristics of the type G RCCB can also be tested with the PROFITEST 2 test instrument.

Menu item S for selective RCDs is not suitable for type G RCCBs.

Ð Set the test instrument function selector switch to I

or 10 mA, and select the I

menu item with the cursor.

N

=30mA

N

Contact voltage and time to trip can be tested in the same way as for standard RCCBs.

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. In such cases disregard the red FI/RCD Lamp.

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7.4 Testing with Adjustable Residual Current

N

The same tests as described in chapter 7.1 can be performed under menu item I ments are performed with a test current which can be adjusted

VAR/RE

within a range of 3 mA to 550 mA. This function (e. g. contact voltage at the tripping contact) is suitable for the examination of RCD characteristics and contact voltage directly at the RCCB tripping contact, as well as for the determination of earthing resistance in systems with RCDs when no PROFiTEST bridging the RCDs. This menu item can only be used for 10 mA and 30 mA RCCBs.

Proceed as follows in order to select the desired residual current:

Ð Select menu item I Ð Press the I

appears.

/ i key. A field for the entry of residual current

N

except that all tests and measure-



DC-II is available for

VAR/RE

If the Menu Key is pressed again, the main menu appears at the display. If no entries are made within approximately 10 s, the menu is exited.

The determination of contact voltage, as well as the tripping test, are performed with the pre-selected residual current.

If a residual current value is selected which is very close to the tripping current of the RCCB, the calculated contact voltage corresponds to the contact voltage which occurs at the moment the RCCB is tripped.

7.5 Testing RCDs in IT Systems

All of the tests described in chapters 7.1 through 7.5 can also be performed in IT systems with the PROFITEST 2. The only prerequisite is that the system is capable of applying the necessary test and tripping currents to earth.

Set-Up

Each time the I pressing and holding the I ously. The speed at which the value rises is increased after a few

/ i is activated current is increased by 1 mA. By



/ i key, the value is increased continu-



Ð Connect the test instrument to the phase conductor which

demonstrates the greatest earth potential.

seconds. If the Menu Key is pressed and held at the same time, the value is reduced at the same speed. After the desired value has be set, testing can be started with the Start Key as described in chapter 7.1. Testing is started with the positive half-wave. If the test is to be started with the negative half-wave, the menu item “Start with negative half-wave (180

28 GMC-I Messtechnik GmbH



” must be selected prior to testing.

Page 29

Attention!

Testing of RCCBs in IT systems cannot be performed

N

START

Note

N

10 mA

N

30 mA

N

100 mA

N

300 mA

N

500 mA

without a probe; a probe is absolutely necessary! The probe and reference earth must be of like potential.

Press and * hold the key!

The MAINS Lamp (6) has no function for the testing of RCDs in IT systems (in the IT mode).

Exit IT mode manually:

Press and hold the Menu Key and repeatedly press the IN/I key until the IT symbol group and half-wave disappear.

The IT mode is exited automatically if:

– an attempt is made to perform the measurement without a

probe or if probe resistance is greater than 50 k

– a prohibited bias occurs between the probe and earth – the function selector switch (9) is turned – the instrument shuts itself off automatically

* Press the key repeatedly until the IT symbol group appears.

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Page 30

7.6 Testing Residual Current Circuit Breakers in TN-S Systems

Note

UINREIN 1 30mA 30mV 0 03V,== ==

Connections

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

As a rule, the display for contact voltage is also 0.0 V, because the nominal residual current of 30 mA together with minimal loop resistance result in a very small voltage value:

In determining contact voltage and earth resistance, it must be kept in mind that loop impedance Z earth resistance R Due to minimal measuring current with a value of, for example,

10 mA for a 30 mA RCCB, resolution is only 3  for R Since loop resistance is generally less (e.g. 1 ), 0  is displayed

is determined rather than

Loop

(=Z

Loop

Measuring resolution is 100 mV, and the display value is thus rounded down to 0.0 V.

in most cases.

Observe national regulations, e.g. the necessity of conducting measurements without regard for RCCBs in Austria, see also chapter 8.3.

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8 Testing of Breaking Requirements for Overcurrent Protective Devices,

Measurement of Loop Impedance and Determination of Short-Circuit Current (functions Z

Testing of overcurrent protective devices includes visual inspection and measurement. The PROFITEST 2 is used for the perfor- mance of measurements.

Measuring Method

Loop impedance Z ascertained in order to determine if the breaking requirements for

is measured and short-circuit current IK is

Loop

protective devices have been fulfilled. Loop impedance is the resistance within the current loop (utility

company plant – phase conductor – protective conductor) when a short-circuit to an exposed conductive part occurs (conductive connection between phase conductor and protective conductor). Short-circuit current magnitude is determined by the loop impedance value. Short-circuit current I mined value set forth by DIN VDE 0100, so that reliable breaking

may not fall below a predeter-

of the protective device (fuse, automatic circuit breaker) is assured.

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

Tables containing allowable display values for loop impedance and minimum short-circuit current display values for ampere ratings for various fuses and circuit breakers can be found in chapter 17 starting on page 61. Maximum device error in accordance with VDE 0413 has been taken into consideration in these tables. See also chapter 8.2.

In order to measure loop impedance Z test current of 0.83 A to 4 A dependent upon line voltage and line

, the instrument uses a

Loop

frequency. The test has a duration of max. 600 ms. If dangerous contact voltage occurs during measurement

(> 50 V), safety shut-down occurs.

The test instrument calculates short-circuit current I measured loop impedance Z current calculation is made with reference to nominal line voltage for line voltages which lie within the nominal ranges for 120 V, 230 V (240 V for „English/UK-parameter“) and 400 V systems. If line voltage does not lie within these nominal ranges, the instrument calculates short-circuit current I voltage and measured loop resistance Z

Loop resistance can be measured with either the positive or the negative half wave with the PROFITEST 2. This measuring method, in combination with the PROFiTEST



DC-II adapter, allows for the measurement of loop

impedance in systems which are equipped with RCCBs. A four conductor measuring cable is used between the instru-

ment and the Test Plug (14). Cable and measuring adapter (12) resistance is automatically compensated for during measurement and does not effect measurement results.

and IK)

Loop

and line voltage. Short-circuit

Loop

based upon prevailing line

Loop

based on

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Page 32

Set-Up

START MENU

START

Loop

8.1 Measurement with Positive or Negative Half-Waves

Measurement by means of half-waves in combination with the PROFiTEST impedance in systems which are equipped with RCCBs.

Set-Up

Whether positive or negative half-waves are used for the measurement depends upon the poling of DC biasing at the ballast. If the RCCB is tripped, testing is then performed with the other halfwave.



DC-II adapter allows for the measurement of loop

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.

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8.2 Evaluation of Measurement Values

N

Attention!

Loop

The maximum allowable loop impedance Z played after allowance has been made for maximum operating measurement error (under normal measuring conditions) can be determined with the help of Table 5 on page 63. Intermediate values can be interpolated.

The maximum allowable nominal current for the protective device (fuse or circuit breaker) for a line voltage of 230/240 V after allowance has been made for maximum measuring error can be determined with the help of Table 5 on page 63 based upon measured short-circuit current (corresponds to DIN VDE 0100 Part 610).

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

breaking current, IK short-circuit current, IN nominal current

tA time to trip < 0.4: current standard 2004 issue 0.5: previous standard 1994 issue

N

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

which may be dis-

Loop

99.9 . Calculated short-circuit current is also displayed. Recommended fuse types do not appear at the display. If RCCBs are utilized, fuse values are determined based upon internal system resistance.

This measurement can be performed for system RCD protection where RCCBs up to 500 mA are utilized as protective devices, although, for example, loop resistance must be determined for purposes of documentation.

The measurement is sufficiently accurate for testing earth-fault loop impedances of less than 100  (at 500 mA).

Earth-fault loop impedances of less than 1  must be reliably substantiated for testing trip conditions with protective multiple earthing. Loop impedance measurement must be performed with the help of the PROFiTEST



DC-II for testing purposes

(see chapter 8.1).

8.3 Loop Impedance Measurement – Measurement via and without tripping the RCCB

Loop impedance L-PE can be determined with a nominal residual current of at least 30 mA with this function, even downstream from RCCBs. Measurement is performed for 2 seconds with a nominal residual current of 15 mA, and results are displayed with a typical accuracy of 1 . The display range runs from 0.1  to

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Page 34

8.4 Testing Meter Start-Up with the Adapter

Attention!

START

Loop

Start-up of energy consumption meters which are connected between L and L or L and N can be tested with this function.

Set-Up

Use only the 2-pole adapter and contact L1 (L2, L3) and N at the meter output.

Meters are tested with the help of an internal load resistor. After pressing the Start Key t (3), the meter can be tested for proper start-up within a period of 5 s. All phases must be tested against N, one after the other.

After testing has been completed, testing power is displayed. The instrument is now ready for further testing (“READY”).

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9 Measuring Supply Impedance (function ZI)

START

Note

Measuring Method

Supply impedance Z used for loop impedance Z ever, the current loop is completed via neutral conductor N rather than protective conductor PE as is the case with loop impedance measurement.

Set-Up

is measured by means of the same method

(see chapter 8, page 31). How-

Loop

Measurement of supply impedance is only possible with the Z is attached!

function if the Measuring Adapter (2-pole) (12)

Loop

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9.1 Testing Meter Start-Up with Earthing Contact Adapter

START

Start-up of energy consumption meters which are connected between L and N can be tested with this function.

Set-Up

After testing has been completed, testing power is displayed. The instrument is now ready for further testing (“READY”).

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10 Earthing Resistance Measurement (function RE)

Note

Attention!

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

The probe is connected to the Probe Connector Socket (20) with a 4 mm contact protected plug.

Direct measurement of earthing resistance R 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 earth electrode resistance area. The distance between the earth electrode and the probe should be at least 20 m.

In many cases, especially in extremely built-up areas, it is difficult, or even impossible, to set a measuring probe. In such cases, earthing resistance can be measured without a probe. In this case, however, the resistance values for the operational earth electrode RB and phase conductor L are also included in the measurement results (see chapter 10.2 “Measuring without Probe“ on page 38).

Measuring Method

The instrument measures earthing resistance R ammeter-voltmeter test (earth electrode loop resistance). The test current which is applied to earthing resistance is controlled by the instrument and demonstrates the following values in the various measuring ranges:

0 to 10 k- 4 mA, 0 to 1 k - 40 mA, 0 to 100  - 0.4 A and 0 to 10  > 0.8 A to approx. 4 A (independent of voltage).

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

Measuring range selection, and thus the selection of test current as well, are carried out automatically.

is only possible

by means of the

Measurement cable and measuring adapter (12) resistance are compensated for automatically during measurement and have no effect on measurement results.

Interference voltages at protective conductor PE, at the earth electrode or at the probe (if properly connected) do not influence measurement results. They can be measured by means of voltage measurement (with the Measuring Adapter (2-pole) (12)).

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

Probe resistance does not effect measurement results and may be as high as 50 k. If probe resistance is too high, measurement is automatically performed without the probe (see chapter 10.2 “Measuring without Probe“ on page 38).

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

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10.1 Measuring with Probe

START

Set-Up

Automatic Measuring Range Selection

10.2 Measuring without Probe

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

The measurement is performed exactly as described in chapter

10.1 “Measuring with Probe“ starting on page 38. However, no probe is connected to the Probe Connector Socket (20).

The resistance value R method also includes operational earth electrode resistance and resistance at phase conductor L. These values must be deducted 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 ZI (phase conductor + neutral conductor). Supply impedance can be measured as described in chapter 9 starting on page 35. In accordance with DIN VDE 0100, the operational earth electrode R

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

obtained with this measuring

ELoop

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Page 39

Earthing resistance is determined with the following equation:

RER

Loop

1 2

---

– RI RB–

The value for operational earth conductor resistance R ignored in the calculation of earthing resistance, because it is

should be

generally unknown. The calculated earthing resistance thus includes operational earth

conductor resistance as a safety factor.

10.3 Evaluation of Measurement Values

The maximum allowable displayed resistance values which assure that the required earthing resistance is not exceeded, and for which maximum device operating error has already been taken into consideration (at nominal conditions of use), can be determined with the help of Table 2 on page 61. Intermediate values can be interpolated.

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11 Measuring Insulation Resistance

Note

START

Note

ISO

(Function R

Set-Up

If you use the test plug together with a plug insert, insulation resistance is only measured between the phase conductor terminal designated “L” and the protective conductor terminal PE!

Checking the Measurement Cables

Before performing insulation measurement, the test probes on the measurement cables should be shortcircuited in order to assure that the instrument displays a value very close to 0 . In this way, incorrect connection can be avoided and broken measurement cables can be detected.

ISO

)

If measured insulation resistance is less than the selected limit value (see chapter 11.3), the U

Lamp (7) lights up.

L/RL

Insulation resistance can only be measured at voltagefree objects.

If an interference voltage of  10 V is present within the system, insulation resistance is not measured. The NETZ/MAINS Lamp (6) lights up and a display appears at the LC Display Field (1), e.g.:

40 GMC-I Messtechnik GmbH

Page 41

START

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

Attention!

Note

When an insulation resistance measurement has been performed on a capacitive object it is automatically discharged by the instrument after the StartKey(3 or 17) has been released. Contact between the object and the instrument may not be interrupted. The voltage decline can be observed directly at the LC Display Field (1).

Do not disconnect the object until voltage has fallen below 25 V!

The instrument’s batteries are exposed to excessive stress during insulation resistance measurement. Only hold the Start Key (3 or 17) depressed until the display has stabilized.

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 approx. 1 mA at a voltage of 500 V. The resulting electrical shock is not life endangering. However, the noticeable shock may lead to injury (e.g. resulting from a startled reaction etc.).

If measurement is performed at a capacitive object such as a long cable, it becomes charged with up to approx. 500 V!

Touching such objects is life endangering!

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11.1 Insulation Measurement with Rising Test Voltage

The “U tion, as well as to determine response voltage for voltage limiting components.

As long as the START key is held depressed, test voltage rises continuously. Insulation measurement is started:

• As soon as the upper voltage limit of 500 V has been reached or

• As soon as the START key has been released (when the desired voltage appears at the display)

• As soon as a measurable test current has been detected (e.g. after sparkover occurs at breakdown voltage).

Test voltage, any response and breakdown voltage which may be present and insulation resistance are displayed.

” function is used to detect weak points in the insula-

ISO

Page 42

11.2 Evaluation of Measurement Values

START

N

Attention!

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

11.3 Setting the Limit Value

The insulation resistance limit value can be set with the “R

Limit” function. If measurement values occur which are

ISO

below this limit value, the red U limit values ranging from 100 k to 10 M is available. Select the limit value with the I

N

/i key.

The instrument can be returned to the menu display by pressing the MENU key, or testing can be started with the basic function by activating the START key.

LED lights up. A selection of

L/RL

12 Measuring Low-Value Resistance of up to 100 

(protective conductor and bonding conductor)

12.1 Measuring Low-Value Resistance (function RLO)

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

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

Set-Up

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Attention!

The test probes should always be in contact with the DUT

START

before the Start Key  (3 or 17) is activated. If the object is charged with voltage, the measurement is blocked if the test probes are first placed into contact with the DUT, and the instrument fuse is blown if the StartKey is activated first.

After the measuring sequence has been started, the instrument performs measurement with automatic pole reversal, first with current flow in one direction, and then in the other. The largest measured resistance value is always displayed.

Differing results for measurements in both directions indicate voltage at the DUT (e.g. thermovoltages or unit voltages). In the case of major deviations between the two measured values, both values are displayed:

GMC-I Messtechnik GmbH 43

Measurement results can be distorted by parallel connected impedances at operating current circuits and by circulating current, especially in systems which make use of “overcurrent protection devices” (earlier 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.

Display for interference voltage, for example:

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

Page 44

The instrument’s batteries are exposed to excessive stress during

Note

insulation resistance measurement. For measurement with current flow in one direction, only press and hold the Start Key  (3 or 17) as long as is necessary for the measurement.

Measuring Low-Value Resistance

Measurement cable and Measuring Adapter (2-pole) (12) resistance is compensated for automatically thanks to the four conductor method and do not effect measurement results. However, if an extension cable is used its resistance must be measured and deducted from the measurement results in accordance with chapter 12.2.

Resistances which do not demonstrate a stable value until after a “settling in period” should not be measured with automatic pole reversal. Measurement with automatic pole reversal may lead to varying and/or inflated measurement values, and thus to an ambiguous reading. Examples of resistances whose values may change during measurement include: – Incandescent lamp resistance, whose values change

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

12.2 Compensation for Extension Cables of up to 10  (function R

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

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

the second test probe at the instrument.

Ð Select one of the items under R Ð Initiate measurement with the Start Key. Ð After measurement has been completed, press the I

The following message appears in the status line at the display: RLO Offset xxx , where xxx is equal to a value between

0.00 and 9.99 . This value will now be deducted from the actual measurement value for all subsequent R ments. Once the offset has been stored to memory, it remains even after the instrument has been switched off.

Only use this function when taking measurements with an extension cable. Whenever different extension cables are used, the above described procedure must be repeated.

)

in the menu.

/i key.

N

measure-

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12.3 Calculation of Cable Lengths for Common

START

N

Copper Conductors

If the IN/ i key is activated after performance of resistance measurement in accordance with chapter 12.1, 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)!

12.4 Setting the Limit Value

The resistance limit value can be set with the “RLOLimit” function. If measurement values which exceed this limit occur, the red U

LED lights up. Limit values can be selected within a range of

0.10  to 10 . Select the desired limit value with the I The display returns to the menu when the MENU key is activated.

N

The instrument can be returned to the menu display by pressing the MENU key, or testing can be started with the basic function by activating the START key.

/i key.

GMC-I Messtechnik GmbH 45

Page 46

13 Phase Sequence Testing

Note

START

L-PE

Set-Up

Clockwise rotation

The Measuring Adapter (2-pole) (12) is required for connection of

Counter-clockwise rotation

the instrument, and is expanded to a 3-pole measuring adapter with the included measurement cable.

PE or N to phase

The following appear at the LC Display Field (1):

Phase missing

– Highest occurring voltage within the measuring circuit – All three phases displayed in order of their sequence

represented by the numbers 1, 2, 3 (the numbers are separated by two periods)

– A circle with an arrow, which indicates

direction of rotation

46 GMC-I Messtechnik GmbH

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14 Operating and Display Elements

Note

(1) LC Display Field

The following are displayed at the LCD:

• One or two measurement values as three place numeric display with unit of measure and abbreviated measuring quantity

• Nominal values for voltage and frequency

•Circuit diagrams

• On-line help

• Messages and instructions

(2) I

The following sequences can be started with this key:

• Starts the tripping test after measurement of contact voltage

• Displays the appropriate circuit diagram and on-line help after

• Selects special RCCB tests (testing with positive or negative

• Displays information for Z

This key has the same function as the Ikey (18).

/ i Key

N

for RCCB testing (I

N

a function has been selected in the menu.

half-wave in IT systems).

, ZI and RLO measurements.

Loop

(4) Menu Key

The basic functions menu for the function selected with the Function Selector Switch (9) is called up with the yellow menu key, and the instrument is switched on at the same time, if is was off. Each additional activation of the key advances the arrow for the selection of one of the various functions.

(5) PE Lamp

The PE lamp lights up red if a potential difference of greater than 100 V occurs between the Contact Surfaces (19) and the safety contact or terminal N at the Plug Insert (13), depending on the position of the Function Selector Switch (9) (see chapter 15.1 “Lamp Functions“ on page 56).

The PE lamp might also light up if a potential transfer occurs during measurement. A potential transfer might occur if, for example, the Measuring Adapter (2-pole) (12) has been attached and you contact phase conductor L with the Test Probe (16) in one hand and touch a Contact Surface (19) at the Test Plug (14) with the other hand while standing on an insulated floor. In this case your body functions as a (capacitive) voltage divider.

(3) StartKey

This key starts the measuring sequence for the function which has been selected in the menu. If the instrument is off, it is switched on by pressing this key, and the measurement for the basic function or the pre-selected function is started.

In the functions R ing conductor resistance) measurement is performed until the key

(insulation resistance) and R

ISO

LO+ RLO–

(bond-

is released.

(6) NETZ/MAINS Lamp

This lamp 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

L-N

and U

L-PE

upon how the instrument has been connected and the selected function (see chapter 15.1 “Lamp Functions“ on page 56). This lamp also lights up if line voltage is present during measurement of R

and RLO.

ISO

This key has the same function as the key (17).

GMC-I Messtechnik GmbH 47

Page 48

(7) UL/RL Lamp

Attention!

Note

This lamp lights up red if contact voltage is greater than 25 V or 50 V during RCD testing, as well as after safety shut-down occurs. It also lights up if R exceeded or fallen short of.

(8) FI/RCD Lamp

This lamp lights up red if the RCCB is not tripped within 400 ms (1000 ms for selective RCDs) during the tripping test with nominal residual current. It also lights up if the RCCB is not tripped before nominal residual current has been reached during measurement with rising residual current. If the “English/UK-parameter” has been selected, it also indicates RCD tripping at 50% I

(9) Function Selector Switch

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

L-N / UL-PE

Loop

The various basic functions are selected by turning the function selector switch while the instrument is switched on.

(10) Shoulder Strap

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

(11) Test Plug Holder

The Test Plug (14) can be stored in the holder at the instrument along with the attached Plug Insert (13).

/ IN (10 mA/30 mA/100 mA/300 mA/500 mA)

/ ZI / RE / R

ISO

N

/ R

or RLO limit values have been

ISO

(12) Measuring Adapter

The Measuring Adapter (2-pole) (12) may only be used together with the Test Plug (14) included with the Use for other purposes is prohibited!

The plug-on Measuring Adapter (2-pole) (12) is used together with the two test probes (16) 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).

(13) Plug Insert (country specific)

The Plug Insert (13) may only be used with the Test Plug (14) included with the PROFITEST 2. Use for other purposes is prohibited!

After the plug insert has been attached, the instrument can be directly connected to earthing contact outlets. You need not concern yourself with poling at the plug. The instrument detects the positions of phase conductor L and neutral conductor N and automatically reverses poles if necessary.

No automatic polarity reversal occurs if the “English/UKparameter” has been selected in setup.

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 (14).

PROFITEST 2

48 GMC-I Messtechnik GmbH

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(14) Test Plug

The various country specific plug inserts (e.g. protective contact plug insert for Germany or SEV plug insert for Switzerland) or theMeasuring Adapter (2-pole) (12) are attached to the test plug and secured with a threaded connector.

(15) Alligator Clip (plug-on)

(16) Test Probes

The test probes comprise the second (permanently attached) and third (plug-on) poles of the Measuring Adapter (12). A coil cable connects them to the plug-on portion of the measuring adapter.

(17)  Key

This key has the same function as the Start Key  (3).

(18) Taste I

This key has the same function as the I

/ i key (2).

N

(19) Contact Surfaces

The contact surfaces are located at both sides of the Test Plug (14). 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. The instrument can be used as a phasing tester for protection class II devices! If a potential difference of greater than 100 V occurs between the protective conductor terminal PE and the contact surface, the PE Lamp (5) lights up (see chapter 15.1 “Lamp Functions“ on page 56).

(20) Probe Connector Socket

The probe connector socket is required for the measurement of probe voltage U tance R

and standing surface insulation resistance.

, earth electrode voltage UE, earthing resis-

S-PE

It can be used for the measurement of contact voltage during RCD testing. The probe is connected with a 4 mm contact protected plug.

The instrument determines whether or not the probe has been properly set and displays results at the LC Display Field (1).

(21) Strap Eyelets

Strap eyelets are located at the left and right hand sides of the instrument. A strap or a belt can be passed through these eyelets for strapping the instrument to the operator’s body.

(22) Swivel Hinge

The display and control field can be swiveled forward or backward with the detented swivel hinge. The instrument can thus be set to the optimum reading angle.

(23) Replacement Fuses

Two replacement fuses are located beneath the Battery Compartment Lid (28).

(24) Fuses

The two type M 3.15/500G fuses (safety fuse FF 3.15/500G) protect the instrument against overload. Phase conductor L and neutral conductor N are fused individually. If a fuse is defective, and if an attempt is made to perform a measurement which uses the circuit protected by this fuse, a corresponding message appears at the LC Display Field (1).

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Page 50

Attention!

Severe damage to the instrument may occur if

Note

Attention!

incorrect fuses are used.

Only original fuses from GMC-I Messtechnik GmbH assure required protection by means of suitable blowing characteristics (order no. 3-578-189-01).

(28) Battery Compartment Lid

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

The battery compartment lid covers the Battery Holder (27) with the batteries, the Fuses (24) and the Replacement Fuses (23).

Voltage ranges U fuses have blown.

(25) Fold-Out Stand

The fold-out stand provides the adjustable control and display field with a more secure stance.

(26) Serial Plate

The serial plate includes information concerning the functions, as well as the instrument’s characteristic values.

(27) Battery Holder

The battery holder is designed for use with six 1.5 V mignon cells in accordance with IEC LR 6 for power supply to the instrument. Make certain that the batteries are poled in accordance with the symbols when inserting new batteries. The holder can only be inserted into the battery compartment in its proper position.

50 GMC-I Messtechnik GmbH

L-N

and U

remain functional even if

L-PE

(29) Measurement Value 1, Abbreviated

(30) Abbreviation for Selected Sub-Function

(31) Three Place Numeric Display: Measurement Value 1

with unit of measure

(32) Three Place Numeric Display: Measurement Value 2

with unit of measure

(33) Abbreviation

for selected sub-function, messages and help

(34) Measurement Value 2, Abbreviated

(35) Charging Socket / Current Transformer Connector Jack

This socket may only be used for connection of the battery charger for recharging batteries in the instrument or the Z501G clip-on current transformer.

Page 51

This page was intentionally left free.

GMC-I Messtechnik GmbH 51

Page 52

15 Characteristic Values

Func-

Measuring

tion

Quantity

L-PE

L–PE

L–N

Probe

AMP.

L-N

IN

/ IN = 10 mA 10 ... 6.51 k 10 

RE / IN = 30 mA

/ IN =100mA 1 ... 651  1

/ IN =300mA

/ IN =500mA

N

/ IN = 10 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 = 300mA 90 ... 390 mA 1 mA 90 ... 390 mA 90 ... 390 mA



/ IN = 500mA 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

Display Range

0 ... 99.9 V

100 ... 500 V

0 ... 99.9 V

100 ... 500 V

15.0 ... 99.9 Hz 100 ... 1000 Hz

0 ... 99.9 V

100 ... 500(850

0 ... 99.9 V

100 ... 253 V

0 ... 1 A 0.1 mA 5 mA ... 1.0 A (5% rdg. + 5 d) (3% rdg.+ 3 d)

0 ... 99.9 A

100 ... 199 A

0 ... 99.9 V

100 ... 300 V

15.0 ... 99.9 Hz 100 ... 1000 Hz

0 ... 70.0 V 0.1 V 0.3 · I

3  ... 999 

1 k ... 2.17 k

0.3  ... 99.9  100  ... 217 

0.2  ... 9.99  100  ... 130 

0 ... 1000 ms 1 ms 1.05 · I

Resolution

0.1 V

0.1 Hz 1 Hz

0.1 V

) V

0.1 V

0.1 A

0.1 V

0.1 Hz 1 Hz

3 

10 

0.3  1 

0.2  1 

0.1 mA

0.1 V same as I

1 V

1 A

1 V

Input

Impedance/

Tes t Current

Ter m in a l L- N -P E

500 k

Ter m in a l L- P E

500 k

Probe-PE

1M

330 k

N

3.0 ... 13.0 mA 3.0 ... 13.0 mA

N

Measuring

Range

108 ... 253 V

108 ... 500 V

Nominal

Values

Measuring

Uncertainty

(2% rdg. + 1 d)

(1% rdg.+ 5 d) (1% rdg.+ 1 d)

15.4 ... 420 Hz (0.2% rdg.+ 1 d) (0.1% rdg.+ 1 d

108 ... 500 V

(3% rdg. + 1 d) (2% rdg.+ 1 d)

0 ... 253 V (3% rdg. + 5 d) (2% rdg.+ 4d)

10 A ... 150 A (10% rdg.+5d) (5% rdg.+3d)

108 ... 253 V (2% rdg. + 1 d)

(1% rdg.+ 5 d) (1% rdg.+ 1 d)

15.4 ... 420 Hz (0.2% rdg. +1 d) (0.1% rdg.+ 1 d)

+1% rdg. –1 d ...



5 ... 70 V

value calculated

from U

IN/IN

0 ... 25.0 V

= 120/230 V

= 50/60 Hz

= 25/50 V

= 10/30/

N

100/300/500

2)5)

= 400 V

+10% rdg. + 1 d

(5% rdg. + 1 d) (3,5% rdg. +2 d)

+10% rdg. + 1 d

0 ... 1000 ms 4 ms 3 ms

Intrinsic

Uncertainty

+9% rdg. + 1 d

+2.5% rdg. –1d

...

+9% rdg. + 1 d

Plug

2-Pole

Insert

Adapter





Connections

3-Pole

Adapter



Probe Clip



option

ally



52 GMC-I Messtechnik GmbH

Page 53

Func-

tion

Loop

ISO

Measuring

Quantity

(full

Loop

waves)

Loop

(+/– half-waves)

without

ELoop

probe)

ISO

Display Range

Resolution

0.01 ... 9.99  10 m 0.83 ... 4.0 A

0 A ... 999 A

1,00 kA ... 9,99 kA

10,0 kA ... 50,0 kA

0 ... 10  0 ... 10  0 ... 10 

0 ... 100 

0 ... 1 k

1 k ...10 k

0.01 ... 9.99 M

10.0 ... 99.9 M

0.01 ... 9.99 M

10.0 ... 99.9 M 100 ... 200 M

0.01 ... 9.99 M

10.0 ... 99.9 M 100 ... 300 M

1 A

10 A

100 A

10 m 10 m 10 m 10 m

1 1

10 k

100 k

10 k

100 k

1 M

10 k

100 k

1 M

Input Impedance/ Tes t Current

—

0.83 ... 3.4 A

0.83 ... 3.4 A 400 mA

40 mA

4 mA

= 1.5 mA 50 k... 100 M

Measuring

Range

0.15 ... 0.49 

0.50 ... 0.99 

1.0 ... 9.99 

0.25 ... 0.99 

1.00 ... 9.99 

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

0.15  ... 0.49 

0.50  ... 0.99 

1.0  ... 9.99  10  ... 99.9 

100  ... 999 

1 k ... 9.99 k

U 25 ... 600 V– 1 V 500 k 25 ... 600 V (3% rdg. + 1d)

Only for systems with overvoltage category II, contamination factor 2, max. 5 minutes

U > 253 V with 2-pole adapter only

100 UN x 1/

IN = 500 mA, max. UN = 250 V

L-PE: 300 V, L-L: 500 V

0.01  ... 9.99 

10.0  ... 99.9 

10 m

100 m

Im  200 mA 0.1  ... 6  U0 = 4.5 V (4% rdg. + 2d) (2% rdg.+ 2 d)

Nominal

Values

= 120/230 V

= 400 V/

500 V

at Z

fN = 50/60 Hz

= 120/230 V

UN = 400 V fN = 50/60 Hz

= 100 V

= 1 mA

UN = 250 V

= 1 mA

= 500 V

= 1 mA

Measuring

Uncertainty

(10% rdg. +2d) (10% rdg. +3d) (5% rdg. + 3d)

(18% rdg. +3d) (10% rdg. +3d)

Loop

(4% rdg.+ 3d) (3% rdg. +3d)

(6% rdg. +5d) (4% rdg. +3d)

value calculated from Z

(10% rdg. +2d) (10% rdg. +3d) (5% rdg. + 3d)

(10% rdg. +3d) (10% rdg. +3d) (10% rdg. +3d)

(4% rdg. +3d) (3% rdg. +3d) (3% rdg. +3d) (3% rdg. +3d) (3% rdg. +3d)

(5% rdg. + 1d) (3% rdg. +1d)

Intrinsic

Uncertainty

3 d

Loop

3 d

(1.5% rdg.

+1d)

Plug

2-Pole

3-Pole

Insert



Adapter



Loop

Adapter

Probe Clip

 





Connections

GMC-I Messtechnik GmbH 53

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Reference Conditions

Line Voltage 230 V  0.1 % Line Frequency 50 Hz  0.1 % Meas. Quantity Frequency 45 Hz ... 65 Hz Meas. Quantity Waveform sine (deviation between effective

and rectified value  0.1%) Line Impedance Angle cos  =1 Probe Resistance  10  Supply Voltage battery: 8 V  0.5 V

Ambient Temperature + 23 C  2 K Relative Humidity 40 % ... 60 % Contact Finger for testing potential diff. at earth

Ambient Conditions

Storage Temperature –20 C ... +60 C (without batteries) Operating Temperature –10 C ... +50 C Relative Humidity max. 75 %, no condensation Elevation max. 2000 m

Power Supply

Batteries 6 ea. 1.5 V mignon cell (alkaline

manganese per IEC-LR6

(or ANSI-AA or JIS-AM3) Rechargeable Batteries NiCd or NiMH battery charger NA101 (article no. Z501M)

(not included) jack plug, 3.5 mm dia. Charging Time approx. 8 hours

Nominal Ranges of Use

Voltage U

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

Frequency f

16 2/3Hz (15.4 ... 18 Hz) 50 Hz (49.5 ... 50.5 Hz) 60 Hz (59.4 ... 60.6 Hz) 200 Hz (190 ... 210 Hz) 400 Hz (380 ... 420 Hz)

Overall Voltage Range U

65 ... 550 V Overall Frequency Range 15.4 ... 420 Hz Waveform sine

Number of Measurements (with one set of batteries), without illumination

ISO

1 measurement – 25 s pause: 1500 measurements

automatic pole reversal (1 measuring cycle) – 25 s pause: 1500 measurements

Due to the minimum capacity of rechargeable batteries as compared to standard batteries, a fewer number of measurements indicated above can be performed with rechargeable batteries. By means of the 0100S rechargeable battery set (article no. Z501B)

/3 of the number of measurements indicated above can

be performed.

Temperature Range 0 C ... + 40 C Battery Voltage 6 ... 10 V Line Impedance Angle corresponds to cos  = 1 ... 0.95 Probe Resistance < 50 k

54 GMC-I Messtechnik GmbH

Page 55

Electricity Safety

Safety Class II per IEC 61010-1/EN 61010-1/

VDE 0411-1 Nominal Voltage 230/400 V (300/500 V) Test Voltage 3.7 kV 50 Hz Measuring Category 300 V CAT III Pollution Degree 2 Fusing

Terminals L and N 1 cartridge fuse-link ea.

M 3.15/500G 6.3 mm x 32 mm

(safety fuse FF 3.15/500G)

Electromagnetic Compatibility (EMC)

Product standard EN 61 326-1:1997

EN 61326:1997/A1:1998

Interference Emission Class

EN 55022 A

Interference Immunity Te st Val ue

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

Overload Capacity

iso

L-P E

Fi, R Z

Loop

, U

L-N

, Z

600 V continuous

440 V continuous

550 V (limits the number of mea-

surements and pause duration.

If overload occurs, the instrument is

switched off by means of a thermo-

static switch)

Electronic protection prevents switching on if interference voltage is present

Fine Wire Fuse Protection 3.15 A 10 s,

fuses blow at > 5 A

Mechanical Design

Dimensions 240 mm x 340 mm x 62 mm

(without measurement cables) Weight approx. 2.5 kg with batteries Protection housing: IP 40, test probe: IP 40

per DIN VDE 0470 Part 1/EN 60529

Extract from table on the meaning of IP codes

IP XY

digit X)

0 not protected 0 not protected 1  50.0 mm

2  12.5 mm 3  2.5 mm

4  1.0 mm

Protection against

foreign object entry

 

(2nd digit Y)

IP XY

Protection against the pene-

tration of water

1 vertically falling drops

3spraying water 4 splashing water

vertically falling drops with

enclosure tilted 15

GMC-I Messtechnik GmbH 55

Page 56

15.1 Lamp Functions

Lamp Status Test Plug

lights up

NETZ/

MAINS

NETZ/

MAINS

NETZ/ MAINS

NETZ/

MAINS

NETZ/

MAINS

NETZ/ MAINS

L/RL

FI/RCD

The NETZ/MAINS Lamp (6) has no function during testing for residual current devices (RCDs) in IT systems.

red

lights up

red

lights up

green

blinks green X IN / RE / RI / Z

blinks green X Z

lights up

orange

blinks red X IN / RE / ZI / Z

blinks red X Z

lights up

red

lights up

red

lights up

red

Meas. Adapter

XX all

XXI

XX I

Function Selector Switch Position (9)

/ RE / RLO / Z

N

/ RE / RI / Z

N

/ RE / ZI / Z

N

ISO

Loop

/ R

N

/ R

N

Loop

/ R

Loop

Function Instrument off and potential difference  100 V between contact finger and one of terminals L, N, PE or L1, L2,

L3 with single-pole connection or PE (earthing contact) with multi-pole connection, frequency f > 45 Hz

Instrument on and potential difference  100 V between contact finger and PE (earthing contact).

ISO

frequency f > 45 Hz

Line voltage of 65 V to 253 V, measurement can be performed

Line voltage of 65 V to 440 V, N conductor not connected, measurement can be performed (I

500 mA, 330 V)

N

Line voltage of 65 V to 550 V, measurement can be performed

Line voltage of 65 V to 253 V to PE, 2 different phases active (no N conductor at mains), measurement can be performed

Line voltage of < 65 V or > 253 V, measurement blocked

Line voltage of < 65 V or > 550 V, measurement blocked

Interference voltage detected, measurement blocked

– Contact voltage U – Safety shut-down has occurred – Limit value exceeded or fallen short of for R

The RCCB was not tripped, or was tripped too late during the tripping test; the RCD tripped at 50 % with „English/UK-parameter“

IN

or UI >25V respectively >50V

/ R

ISO

function

56 GMC-I Messtechnik GmbH

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16 Maintenance

START

Note

START

L-N

16.1 Self-Test

The following information is displayed at the test window:

 Software version with date of issue  Instrument type  Date of last calibration / last balancing  Status display for internal testing

(“OK !” must appear at the ROM and CAL-CHECK SUM display. If OK is not displayed, the measuring and test instrument may no longer be used for the performance of measurements. Please contact your nearest customer service center.

In order to run all of the tests, press the Start Button  (3 or 17) after each test window appears at the display.

The self-test can be interrupted after any given test window has appeared by pressing the Menu Key (4).

Six different test windows appear at first with horizontal and vertical lines, e.g.:

GMC-I Messtechnik GmbH 57

Page 58

Subsequently, the following test windows are displayed:

START

Note

START

Note

START

Each of the indicated relays is actuated twice.

Each of the four indicated lamps blinks three times. The PE lamp cannot be tested automatically!

58 GMC-I Messtechnik GmbH

The measuring and testing instrument is restarted by pressing any key.

Page 59

16.2 Battery and Rechargeable Battery Operation, and Charging

Note

START

Attention!

L-N

Check to make sure that no leakage has occurred at batteries or rechargeable batteries at short, regular intervals, or after the instrument has been in storage for a lengthy period of time. If leakage has occurred, the electrolyte must be carefully and completely removed with a damp cloth and new batteries must be installed before the instrument is placed back into operation.

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 the battery test indicates that battery voltage has fallen below the minimum allowable value (see chapter 3.3 “Battery Test“ on page 9), install a new set of batteries or charge the rechargeable batteries (see chapter 3.1 “Installing or Replacing Batteries“ on page 8).

Use only the NA101 (article no. Z501M) battery charger with reliable electrical isolation for the recharging of batteries. Before connecting the charger to the charging socket make certain that:

– Rechargeable batteries have been installed

(not standard batteries),

– The instrument has been disconnected from the

measuring circuit at all poles.

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16.3 Fuses

Note

Attention!

Pb Cd Hg

If a fuse has blown due to overload, a corresponding message error appears at the LC Display Field (1). The instrument’s voltage measuring ranges are nevertheless still functional.

Remove the defective fuse and insert a Replacement Fuses (23).

Ð Insert the fuse closure after the fuse has been replaced and

secure by turning clockwise.

Ð Replace the Battery Compartment Lid (28) and retighten the

screw.

Blown fuses cannot be detected when the instrument is set to certain functions. In such cases, the following message appears at the display: “Check test setup”. There are many possible causes, amongst others a blown fuse.

Replacing Fuses

Disconnect the instrument from the measuring circuit at all poles before opening Battery Compartment Lid (28)!

Ð Loosen the slotted screw at the Battery Compartment Lid (28)

at the back of the instrument and remove the lid. Fuses (24) and Replacement Fuses (23) are now accessible.

Ð Open the fuse closure with the help of an appropriate tool

(e.g. a screwdriver) by pressing and turning counter-clockwise.

Severe damage to the instrument may occur if incorrect fuses are used.

Only original fuses from GMC-I Messtechnik GmbH assure required protection by means of suitable blowing characteristics (order no. 3-578-189-01). Short-circuiting of fuse terminals of the repair of fuses is prohibited! The instrument may be damaged if fuses with incorrect ampere ratings, breaking capacities or blowing characteristics are used!

16.4 Housing

No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning. Avoid the use of cleansers, abrasives or solvents.

16.5 Device Return and Environmentally Compatible 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.

We identify our electrical and electronic devices in accordance with WEEE 2012/19EU and ElektroG with the symbol shown to the right per DIN EN 50419 . These devices may not be disposed with the trash. Please contact our service department regarding the return of old devices.

If you use batteries or rechargeable batteries in your instrument or accessories which no longer function properly, they must be duly disposed of in compliance with the applicable national regulations. Batteries or rechargeable batteries may contain harmful substances or heavy metal such as lead (PB), cadmium (CD) or mercury (Hg).

They symbol shown to the right indicates that batteries or rechargeable batteries may not be disposed of with the trash, but must be delivered to collection points specially provided for this purpose.

60 GMC-I Messtechnik GmbH

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17 Appendix

Tables for the determination of maximum or minimum display values under consideration of maximum instrument operating error:

17.1 Table 1 17.2 Table 2

(full wave) / ZI ()Z

Loop

Limit 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.

Display Value

(+/- half-wave) ()

Loop

Limit Value

Max.

Display Value

RE / R

()

Limit Valu e

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

Valu e

Max.

Display Value

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17.3 Table 3 17.4 Table 4

M

ISO

Limit Value

0.10 0.12 10.0 10.7

0.15 0.17 15.0 15.9

0.20 0.23 20.0 21.2

0.25 0.28 25.0 26.5

0.30 0.33 30.0 31.7

0.35 0.38 35.0 37.0

0.40 0.44 40.0 42.3

0.45 0.49 45.0 47.5

0.50 0.54 50.0 52.8

0.55 0.59 60.0 63.3

0.60 0.65 70.0 73.8

0.70 0.75 80.0 84.4

0.80 0.86 90.0 94.9

0.90 0.96 100 106

1.00 1.07 150 158

1.50 1.59 200 211

2.00 2.12 250 264

2.50 2.65 300 316

3.00 3.17

3.50 3.70

4.00 4.23

4.50 4.75

5.00 5.28

6.00 6.33

7.00 7.38

8.00 8.44

9.00 9.49

Min.

Display Value

Limit Value

Min.

Display Value

Limit Value

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.

RLO 

Limit Value

Max.

Display Value

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17.5 Table 5 Short-Circuit Current Minimum Display Values

for the determination of nominal current for various fuses and breakers for systems with nominal voltage of U

in accordance with the DIN VDE 0636 series of standards

Nominal

Current I

Characteristic gL, gG, gM Characteristic gL

[A]

100 580 675 1200 1.49 k 125 750 889 1440 1.84 k 160 930 1.12 k 1920 2.59 k

Breaking Current I

Limit Value

[A]

2 9.2 10 16 17 10 11 20 21 40 42 24 25

314.11524251516303260643638 4192032342021404280854851 627284750303260641201287276

8373965694042808516017296102 10 47 50 82 87 50 53 100 106 200 216 120 128 13 56 59 98 104 65 69 130 139 260 297 156 167 16 65 69 107 114 80 85 160 172 320 369 192 207 20 85 90 145 155 100 106 200 216 400 467 240 273 25 110 117 180 194 125 134 250 285 500 578 300 345 32 150 161 265 303 160 172 320 369 640 750 384 447 35 173 186 295 339 175 188 350 405 700 825 420 492 40 190 205 310 357 200 216 400 467 800 953 480 553 50 260 297 460 529 250 285 500 578 1000 1.22 k 600 700 63 320 369 550 639 315 363 630 737 1260 1.58 k 756 896 80 440 517 960 1.16 k

Low Resistance Fuses

5 s Breaking Current IA 0.4 s

Min. Display

[A]

Limit Value

[A]

Min. Display

[A]

Characteristic B/E

(formerly L)

Breaking Current I 5 x IN (< 0.2 s/0.4 s)

Limit Value

[A]

Min. Display

[A]

with Circuit Breaker and Line Switch

Characteristic C

(formerly G, U)

Breaking Current I

10 x IN (< 0.2 s/0.4 s)

Limit Value

[A]

Min. Display

[A]

Characteristic D

Breaking Current I

20 x IN (< 0.2 s/0.4 s)

Limit Value

Min. Display

[A]

=230/240 V

Characteristic K

Breaking Current I

12 x IN (< 0.1 s)

Limit Value

[A]

Min. Display

[A]

Example

Display value 90.4 A É next smallest value for circuit breaker characteristic B from table: 85 A É protective device nominal current (I max. 16 A

GMC-I Messtechnik GmbH 63

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17.6 List of Abbreviations and their Meanings

RCCBs (Residual Current Device/RCD)

Tripping current



Nominal residual current

N

Rising test current (residual current)

Calculated earthing or earth electrode loop resistance

Selective residual current device

Time to trip / breaking time

Contact voltage at moment of tripping

I

Contact voltage

IN

in relationship to nominal residual current I

Contact voltage limit value

Overcurrent Protective Devices

Calculated short-circuit current (at nominal voltage)

Line impedance

Loop impedance

Loop

Earthing

Operational earth resistance

Measured earthing resistance

Earth electrode loop resistance

ELoop

Low-Value Resistance at Protective, Earthing and Bonding Conductors

Bonding conductor resistance (+ pole to PE)

LO+

Bonding conductor resistance (– pole to PE)

LO–

N

Insulation

Insulation resistance

ISO

Current

Breaking current

Leakage current

(measured with clip-on current transformer)

Measuring current

Nominal current

Test current

Voltage

f Line voltage frequency f

Nominal voltage rated frequency

Operating voltage

Batt

Earth electrode voltage

Voltage between two phase conductors

L-L

Voltage between L and N

L-N

Voltage between L and PE

L-PE

U Voltage U

Nominal line voltage

Highest measured voltage during determination of

phase sequence

Probe/US-PE

Conductor voltage to earth

Voltage between probe and PE (probe voltage)

64 GMC-I Messtechnik GmbH

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18 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 17025:2005

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

Competent Partner

GMC-I Messtechnik GmbH is certified in accordance with DIN EN ISO 9001:2008.

Our DAkkS calibration laboratory is accredited by the Deutsche Akkreditierungsstelle GmbH (National accreditation body for the Republic of Germany) in accordance with DIN EN ISO/IEC 17025:2005 under registration number D-K-15080-01-01.

We offer a complete range of expertise in the field of metrology: from and

proprietary calibration certificates

Our spectrum of offerings is rounded out with free An on-site DAkkS calibration station is an integral part of our service depart-

ment. 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.

right on up to

DAkkS calibration certificates

test equipment management

test reports

19 Recalibration

The respective measuring task and the stress to which your measuring instrument is subjected affect the ageing of the components and may result in deviations from the guaranteed accuracy.

If high measuring accuracy is required and the instrument is frequently used in field applications, combined with transport stress and great temperature fluctuations, we recommend a relatively short calibration interval of 1 year. If your measuring instrument is mainly used in the laboratory and indoors without being exposed to any major climatic or mechanical stress, a calibration interval of 2-3 years is usually sufficient.

During recalibration* in an accredited calibration laboratory (DIN EN ISO/IEC 17025) the deviations of your instrument in relation to traceable standards are measured and documented. The deviations determined in the process are used for correction of the readings during subsequent application.

We are pleased to perform DAkkS or factory calibrations for you in our calibration laboratory. Please visit our website at www.gossenmetrawatt.com ( Company  DAkkS Calibration Center or  FAQs  Calibration questions and answers).

By having your measuring instrument calibrated regularly, you fulfill the requirements of a quality management system per DIN EN ISO 9001.

* Verification of specifications or adjustment services are not part of the

calibration. For products from our factory, however, any necessary ad-

justment is frequently performed and the observance of the relevant specification is confirmed.

GMC-I Messtechnik GmbH 65

Page 66

20 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

66 GMC-I Messtechnik GmbH

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GMC-I Messtechnik GmbH 67

Page 68

Edited in Germany • Subject to change without notice • A pdf version is 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 PROFITEST 2 DIN VDE 0100 Operating Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1 Applications

2 Safety Features and Precautions

3 Initial Start-Up

3.1 Installing or Replacing Batteries

3.2 Selecting a Language, Basic Function and Sub-Function Settings

3.3 Battery Test

3.4 Recharging the rechargeable Batteries

4 Abbreviated Instructions for Quick Initial Start-Up

5 General Instructions

5.1 Connecting the Instrument

5.2 Automatic Settings, Monitoring and Shut-Off

5.3 Measurement Value Display

5.4 Testing Earthing Contact Sockets for Correct Connection

5.5 Help Function

6 Measuring Alternating Voltage and Frequency

6.2 Voltage between L and PE, N and PE, as well as L and N

6.4 Measuring Current with a Clip-On Current Transformer

7 Testing RCDs

7.2 Special Testing for Systems and RCCBs

7.2.1 Testing for Systems and RCCBs with Rising Residual Current

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

7.3 Testing for Special RCDs

7.3.1 Systems with Selective RCDs

7.3.2 Type G RCCBs

7.4 Testing with Adjustable Residual Current

7.5 Testing RCDs in IT Systems

7.6 Testing Residual Current Circuit Breakers in TN-S Systems

8.1 Measurement with Positive or Negative Half-Waves

8.2 Evaluation of Measurement Values

8.3 Loop Impedance Measurement – Measurement via and without tripping the RCCB

8.4 Testing Meter Start-Up with the Adapter

9 Measuring Supply Impedance (function ZI)

9.1 Testing Meter Start-Up with Earthing Contact Adapter

10 Earthing Resistance Measurement (function RE)

10.1 Measuring with Probe

10.2 Measuring without Probe

10.3 Evaluation of Measurement Values

11.1 Insulation Measurement with Rising Test Voltage

11.2 Evaluation of Measurement Values

11.3 Setting the Limit Value

12.1 Measuring Low-Value Resistance (function RLO)

12.4 Setting the Limit Value

13 Phase Sequence Testing

14 Operating and Display Elements

15 Characteristic Values

15.1 Lamp Functions

16 Maintenance

16.1 Self-Test

16.2 Battery and Rechargeable Battery Operation, and Charging

16.3 Fuses

16.4 Housing

16.5 Device Return and Environmentally Compatible Disposal

17 Appendix

17.1 Table 1 17.2 Table 2

17.3 Table 3 17.4 Table 4

17.5 Table 5 Short-Circuit Current Minimum Display Values

17.6 List of Abbreviations and their Meanings

19 Recalibration

20 Product Support