Siemens SINAMICS G120 PM240P-2 - Permissible Line Supplies

Connecting
4.1 Permissible line supplies
Power Module PM240P-2
36 Hardware Installation Manual, 06/2020, A5E37800827C AD
4.1 Permissible line supplies
The converter is designed for the following line supplies according to IEC 60364-1 (2005).
● TN system
● TT system
● IT system
Restrictions for installation altitudes above 2000 m
Above an installation altitude of 2000 m, the permissible line supplies are restricted.
Restrictions for special ambient conditions (Page 69)
General requirements on line supply
The plant builder or machine manufacturer must ensure for operation with rated current I
rated
that the voltage drop between the transformer input terminals and the converter when
operated with its rated values is less than 4% of the transformer rated current
4.1.1 TN line system
A TN system transfers the PE protective
conductor 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 sys-
tem with a grounded line conductor, e.g. with
grounded L1.
A TN system can transfer the neutral con-
ductor N and the PE prot
ective conductor
either separately or combined.
Converter connected to a TN system
● Converters with integrated line filter:
– Operation on TN line systems with grounded neutral point permissible.
– Operation on TN line systems with grounded line conductor not permissible.
● Converters with 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 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.