Siemens sinamics G120 Operating Instructions Manual page 73
Low voltage inverters chassis devices with cu250s-2 control units and encoder evaluation
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Also See for sinamics G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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TT line system
In a TT line system, the transformer grounding and the installation grounding are
independent of one another.
There are TT systems with and without transfer of the neutral conductor N.
Inverter operated on a TT line system
● Inverter with integrated or external line filter:
– Operation on TT line systems with grounded neutral point permissible.
– Operation on TT line systems without grounded neutral point not permissible.
● Inverter without line filter:
– Operation on all TT line systems permissible.
● For installations in compliance with IEC, operation on a TT line system is permissible. For
installations in compliance with UL, operation on a TT line system is not permissible.
Examples for inverters connected to a TT line system
Image 4-3
Converter with CU250S-2 Control Unit
Operating Instructions, 01/2016, FW V4.7 SP6, A5E31759476B AE
4.5 Connecting the line supply, motor, and inverter components
TT line system with neutral conductor N and with grounded neutral point
Installing
73
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