ZAPTEC Pro Manuel D'installation page 14

English
Insulation test
Prior to fitting the charging station to the back plate, an insulation test must
be carried out on all back plates. If this is done while the charging station
is fitted, the overvoltage protection may be triggered and this will cause
the test to fail. If a PLC communication module is used as a communication
solution, this must be disconnected during the insulation test in order to
avoid erroneous insulation results caused by the phase coupling function
of the PLC communication module.
Do not insert measuring pins, wires or anything else into the quick-release
connector on the back plate. Voltage tests should be performed directly
on the coupling screws or using a female coupling.
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