Benning IT 130 - 5.8 Testing the protective conductor connection (PE)

BENNING IT 130 Measurements
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5.8 Testing the protective conductor connection (PE)
In case of new or modified installations, it might happen that the protective conductor (PE) and
the external conductor L (phase) have been accidentally reversed. This is a very dangerous
situation! For this reason, it is important to check whether a dangerous phase voltage is applied
to the protective conductor connection.
The test of the protective conductor connection is performed automatically for the ZIine (L-N/L),
Zloop (L-PE) and RCD measuring functions by touching (> 1 second) the silver "TEST" key of
the installation tester, of the "Commander" test probe or the optional "Commander" test plug
(044149).
Examples of incorrect wiring of the protective conductor connection (PE)
Figure 5.36: Reversed L and PE conductors – Phase voltage at the PE conductor is detected
by touching the "TEST" key of the "Commander" test plug (optional).
Figure 5.37: Reversed L and PE conductors – Phase voltage at the PE conductor is detected
by touching the "TEST" key of the installation tester