Operation Manual

22 GMC-I Messtechnik GmbH

Touch Current – Testing for Absence of Voltage

Sequence DIR / DIF / ALT

Ð Select the test: ↑↓ keys.

Ð Connect the DUT to the test socket, or connect the probe.

Ð Select type of test current: DIR / DIF / ALT key.

Ð Select mains polarity reversal: L/N / N/L key.

Ð Start the test: Press the START⏐STOP key.

Ð Measured values are displayed.

Ð End the test: Press the START⏐STOP key.

Ð Read the measured value and compare it with the table of

permissible limit values.

Examples of Maximum Permissible Limit Values for

Touch Current in mA

Procedure for DL – 2-probe Measurement

This measurement is performed with 2 probes. The measuring

section is electrically isolated from the mains power supply of the

instrument. Input resistance is 1 kΩ.

Ð Select test: key ↑↓

Ð Connect probe 1 (e. g. the 25 m cable drum) to sockets 1-2

and connect the probe tip with the reference measuring point.

Ð Select test current type: key DL

Ð Scan the test point with probe 2 (socket connectors 3-4).

Ð Start test: press key START⏐STOP.

Ð Measured values are displayed.

Ð Quit test: Press key START⏐STOP.

Ð Read off measured value and compare it with the table of per-

missible limit values.

Test Standard

Protec-

tion

Class

Direct /

Differential Current

Measurement

Alternative Measurement

IEC 62353

(VDE 0751-1)

PC2 0.1 mA 0.5 mA

VDE 0701-702 PC2 0.5 mA