Permissible Line Supplies; Tn Line System - Siemens SINAMICS G120 Hardware Installation Manual

5.1

Permissible line supplies

Note
Restrictions for installation altitudes above 2000 m
Above an installation altitude of 2000 m, the permissible line supplies are restricted.
Note
Line requirement
The machine manufacturer must ensure that in operation the voltage drop between the
transformer input terminals and the inverter when operated with its rated values is less than
1%.
The inverter is designed for the following power distribution systems according to IEC 60364-1
(2005).
5.1.1

TN line system

A TN line system transfers the PE protec‐
tive conductor to the installed plant or sys‐
tem using a cable.
Generally, in a TN line system the neutral
point is grounded. There are versions of a
TN system with a grounded line conduc‐
tor, e.g. with grounded L1.
A TN line system can transfer the neutral
conductor N and the PE protective con‐
ductor either separately or combined.
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 permissible on all TN line systems.
Power Module PM230, IP20 / Push-through technology (PT)
Hardware Installation Manual, 08/2016, A5E34331322B AB
Restrictions for special ambient conditions (Page 69)
Connecting
5.1 Permissible line supplies
41