Operating Instructions

Inverter connected to a TN system
● Inverters with integrated line filter:
– Operation on TN line systems with grounded neutral point permissible.
– Operation on TN line systems with grounded line conductor not permissible.
Note
Special feature of FSG inverters
FSG inverters with integrated C3 line filter can be operated in TN line systems ≤ 600 V
with a grounded line conductor if you remove the screw for functional grounding.
Permissible line supplies (Page 86)
If you remove the screw for functional grounding, the EMC properties deteriorate and
the requirements of Class C3 are no longer met.
● Inverters with external line filter:
– Operation on TN line systems with grounded neutral point permissible.
– Operation on TN line systems with grounded line conductor not permissible.
● Inverter without line filter:
– Operation on all TN line systems ≤ 600 V permissible
– Operation on TN line systems > 600 V and grounded neutral point permissible.
– Operation on TN line systems > 600 V and grounded line conductor not permissible.
Installing
4.4 Connecting the line supply and motor
Converter with the CU230P-2 Control Units
88 Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257946B AF