Gossen Metrawatt PROFITEST REMOTE handleiding

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Gossen Metrawatt

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Gossen Metrawatt GmbH 5

2 Applications

Use of the test adapter eliminates bother-

some replugging, and thus reversing of the

phases as well during measurement of RISO,

L-PE and ZL-N.

The following measurements are supported:

L1-PE, L2-PE, L3-PE,

N-PE, L+N-PE,

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

L1-L2, L1-L3, L2-L3

The following test instruments are suitable

for use with the test adapter:

– PROFITEST MTECH+ IQ, as of FW

V03.04.04

– PROFITEST MXTRA IQ, as of FW V03.04.04

– PROFITEST PRIME, as of FW V03.05.00

Indication of Conductor Connections

The LEDs indicate conductor continuity

between the connected system and the test

instrument’s input:

–

RED

LED: Switch closed,

conductor continuity

–

REEN

LED: Switch open, no connection

The line circuit-breaker is opened and

closed via the

TEST ADAPTER CONTROLLER at the

respective test instrument.

Measuring Insulation Resistance RISO in Electri-

cal Systems

In order to be able to detect faults in electri-

cal systems which are caused by defective

insulation, insulation resistance must be

measured between each active conductor

and the protective earth conductor.

Observe the corresponding chapters in the

operating instructions of your test instrument

concerning correct measurement proce-

dures.

NOTE!

Thanks to 4-wire measurement,

there’s no need to determine the test

adapter’s offset value.

Measuring Loop and Line Impedance Z

L-PE and

L-N

Loop impedance is the sum of all resis-

tances within the distribution network and

the conductors in the branch circuit.

In order to be able to determine the effec-

tiveness of residual current devices, loop

impedance Z

L-PE must be ascertained

between the phase conductor and the pro-

tective conductor. The same measuring pro-

cedure is used for line impedance Z

L-N as is

also the case for loop impedance Z

L-PE.

However, the current loop is completed via

neutral conductor N, rather than protective

conductor PE as is the case with loop

impedance measurement.