Siemens SINAMICS G120 PM240P-2 - IT System

Connecting
4.1 Permissible line supplies
Power Module PM240P-2
38 Hardware Installation Manual, 06/2020, A5E37800827C AD
4.1.3 IT system
In an IT line system, all of the conductors are
insulated with respect to the
PE protective
conductor
– or connected to the PE protec-
tive conductor through an impedance.
There are IT systems with and without trans-
fer of the neutral conductor N.
Note
Behavior of the converter when a ground fault occurs
If the converter is to remain operable even when a ground fault occurs at the converter
output, you must install an output reactor. This prevents an overcurrent trip or damage to the
drive.
Converter connected to an IT system
● Converters with integrated line filter:
– Operation on IT line systems not permissible.
● Converter without line filter:
– Operation on all IT line systems permissible.
Note
690 V converters: Output reactors for frame sizes FSD and FSE
An output reactor is required for 690 V reactors in frame sizes FSD and FSE.