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

4.5.8

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

If the Cabinet Modules are operated on a non-grounded 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 Connection Modules
● Active Line Connection Modules (connection clip in the Active Interface Module) including
the Voltage Sensing Module VSM10 included in it
NOTICE
Damage to the device through not removing the connection clip with a non-grounded line
supply
Failure to remove the connection clip to the basic interference suppression module on a
non-grounded line supply (IT system) can cause significant damage to the device.
• With a non-grounded line supply (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 removed from the connection clip (by pulling it off) if the
connection clip is to remain in the unit (operation on a grounded line supply).
• The warning label must be removed together with the connection clip if the unit is
operated on a non-grounded line supply (IT system).
Figure 4-7
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
interference suppression module.
Warning label on the connection clip
Electrical installation
4.5 Connections
95