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.
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Converter operated on a TN line system
• Converter with integrated or external line lter:
– Operation on TN line systems with grounded neutral point permissible.
– Operation on TN line systems with grounded line conductor not permissible.
• Converter without line lter:
– Operation permissible on all TN line systems.
Installing
4.9Connect the line supply, motor and braking resistor
SINAMICS G120C Converters
Operating Instructions, 02/2023, FW V4.7 SP14, A5E34263257B AK 65
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