4.4.1 TN line system
A TN line system transfers the PE protective
conductor to the installed plant or system us‐
ing a cable.
Generally, in a TN line 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 line system can transfer the neutral con‐
ductor N and the PE protective conductor ei‐
ther separately or combined.
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Inverter operated on a TN line system
● Inverter 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.
● 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
84 Operating Instructions, 09/2017, FW V4.7 SP9, A5E34257946B AE
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