Connecting Cabinet Modules To An Ungrounded / It Power Networks - Siemens SINAMICS S120 Device Manual

Electrical installation
4.5 Connections
Table 4- 13
4.5.9

Connecting Cabinet Modules to an ungrounded / IT power networks

If the Cabinet Modules are operated on an ungrounded system (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
( the connection clip is located behind the fan for frame sizes HX and JX)
● Active Line Modules (connection clip in the Active Interface Module)
NOTICE
Device damage resulting from failure to remove the connection clip on an ungrounded
system
Failure to remove the connection clip to the basic interference suppression module on an
ungrounded system (IT system) can cause significant damage to the device.
• On an ungrounded system (IT system), remove the connection clip to the basic
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 be removed from the connection clip (by pulling it off) if the
connection clip is to remain in the unit (operation on a grounded system).
• The warning label must be removed together with the connection clip if the unit is
operated on an ungrounded system (IT system).
Figure 4-13
92
Line voltage assignments for setting the fan transformer (500 to 690 V 2 ph. AC)
Line voltage
500 V ± 10 %
525 V ± 10 %
575 V ± 10 %
600 V ± 10 %
660 V ± 10 %
690 V ± 10 %
interference suppression module.
Warning label on the connection clip
Taps of the fan transformer (-T1/-T2 -T10, -T20)
500 V
525 V
575 V
600 V
660 V
690 V
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A