Converter operated on a TT system
Converter Line supply with grounded neutral
Frame size A B C
Integrated line lter C2 ✓ ✓ ✓
✓ Operation permissible
5.2.3 IT line system
7UDQVIHURI1LPSHGDQFHZLWK
UHVSHFWWR3(SURWHFWLYHFRQGXFWRU
7UDQVIRUPHURU
JHQHUDWRU
7RWKHV\VWHP
([DPSOH
/
/
/
1
3(
In an IT system, all of the conductors are insulated with respect to the PE protective
conductor – or connected to the PE protective conductor through an impedance.
There are IT systems with and without transfer of the neutral conductor N.
Converter operated on an IT system
Converter Line supply with grounded neutral
Frame size A B C
Integrated line lter C2 ✓
1)
✓
1)
✓
2)
✓
1)
Operation permissible once the functional grounding screw(s) has been removed
✓
2)
Operation permissible once the functional grounding screws and cable have been removed
If the functional grounding screw or cable has been removed, the converter no longer fullls the
requirements of class C2.
If you wish to use the converter in an IT line system, you must disconnect the capacitor with
earth by removing the functional grounding connections from the converter.
Wiring
5.2Permissible line supplies
SINAMICS G115D Wall Mounted distributed drive
54 Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
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