Connecting-up
5.1 Permissible line supplies
Power Module PM240-2
46 Hardware Installation Manual, 01/2017, A5E33294624B AE
In an IT line system, all of the conductors are
insulated
with respect to the PE protective
– or connected to the PE protec-
tive conductor through an impedance.
There are IT systems with and without tran
s-
fer of the neutral conductor N.
Inverter operated on an IT line system
● Inverters with integrated line filter:
– Operation on IT line systems not permissible.
● Inverter without line filter:
– Operation on all IT line systems permissible.
Behavior of the inverter when a ground fault occurs
In some instances, even for a ground fault, the inverter should still remain functional. In
cases such as these, you must install an output reactor. This prevents an overcurrent trip or
damage to the drive.
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