Operating Cabinet Modules On An Isolated-Neutral Supply System (It System) - Siemens SINAMICS S120 Manual

Electrical installation
4.4 Connections
Table 4- 11
Table 4- 12
4.4.8

Operating Cabinet Modules on an isolated-neutral supply system (IT system)

When the Cabinet Modules are operated on an isolated line supply system (IT system), the
integrated EMC filters must be deactivated by unscrewing a connection bar in the following
Cabinet Modules:
● Basic Line Modules
● Smart Line Modules
● Active Line Modules (connection bar in the Active Interface Module)
Failing to remove the connection bar to the EMC filter on a non-grounded line supply/IT line
supply can cause significant damage to the device.
80
Line voltage assignments for setting the fan transformer (380 to 480 V 2 AC)
Line voltage
380 V ± 10%
400 V ± 10%
440 V ± 10%
480 V ± 10%
Line voltage assignments for setting the fan transformer (500 to 690 V 2 AC)
Line voltage
500 V ± 10%
525 V ± 10%
575 V ± 10%
600 V ± 10%
660 V ± 10%
690 V ± 10%
(on frame sizes HX and JX, the connection bar is located behind the fan)
WARNING
Fan transformer tap (-T1/-T2 –T10, -T20)
380 V
400 V
440 V
480 V
Fan transformer tap (-T1/-T2 -T10, -T20)
500 V
525 V
575 V
600 V
660 V
690 V
Manual, (GH5), 05/2010, A5E03263538A
Cabinet Modules