Tt Line System - Siemens SINAMICS G120C Operating Instructions Manual
Low voltage converters
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Also See for SINAMICS G120C:
- Operating instructions manual (470 pages) ,
- Compact operating instructions (92 pages) ,
- Getting started (68 pages)
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Installing
4.9 Connect the line supply, motor and braking resistor
4.9.1.2
TT line system
In a TT line system, the transformer ground‐
ing and the installation grounding are inde‐
pendent of one another.
There are TT line supplies where the neutral
conductor N is either transferred – or not.
Note
Operation in IEC or UL systems
For installations in compliance with IEC, operation on TT line systems is permissible. For
installations in compliance with UL, operation on TT line systems is not permissible.
Operating converter on a TT line system
• Converter 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.
• Converter without line filter:
– Operation on all TT line systems permissible.
66
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
SINAMICS G120C Converters
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