Connecting Cabinet Modules To Non-Grounded Line Supplies (It Systems) - Siemens SINAMICS S120 Manual

Electrical installation
4.6 Connections
Table 4- 13
4.6.9

Connecting Cabinet Modules to non-grounded line supplies (IT systems)

If the Cabinet Modules are operated on an ungrounded line supply (IT system), the
integrated basic interference suppression modules must be deactivated by unscrewing the
connection clip in the following Cabinet Modules:
● Basic Line Modules
● Smart Line Modules
● Active Line Modules (connection clip in the Active Interface Module)
Removing the connection clip for an ungrounded line supply
Failing to remove the connection clip for the basic interference suppression module on an
ungrounded / IT system can cause significant damage to the device.
Note
Warning label on the connection clip
A yellow warning label is attached to each connection clip so that it is easier to find.
 The warning label must removed from the connection clip (by pulling it off) if the
 The warning label must be removed together with the connection clip if the unit is
Figure 4-13
96
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%
(the connection clip is located behind the fan for frame sizes HX and JX)
WARNING
connection clip is to remain in the unit (operation on a grounded line supply).
operated on a non-grounded line supply (IT system).
Warning label on the connection clip
Fan transformer tap (-T1/-T2 -T10, -T20)
500 V
525 V
575 V
600 V
660 V
690 V
Manual, 03/2013, A5E03263538A
Cabinet Modules