Tn Line System - Siemens SINAMICS G120C Operating Instructions Manual

4.9.1.1

TN line system

A TN system transfers the PE protective con‐
ductor to the installed plant or system using a
cable.
Generally, in a TN system the neutral point is
grounded. There are versions of a TN system
with a grounded line conductor, e.g. with
grounded L1.
A TN system can transfer the neutral conduc‐
tor N and the PE protective conductor either
separately or combined.
Converter operated on a TN line system
• Converter with integrated or external line filter:
– Operation on TN line systems with grounded neutral point permissible.
– Operation on TN line systems with grounded line conductor not permissible.
• Converter without line filter:
– Operation permissible on all TN line systems.
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK
4.9 Connect the line supply, motor and braking resistor
Installing
65