Operating On An Ungrounded Line Supply (It System) - Siemens Sinamics G130 Operating Instructions Manual

Figure 4-4
4.3.7

Operating on an ungrounded line supply (IT system)

When using a Voltage Sensing Module on a non-grounded line supply (IT system), remove
the connector jumper in terminal X530 on the lower side of the component.
Use two screwdrivers or a suitable tool in order to relieve the holding springs in the terminal
and then withdraw the connector jumper.
Note
False tripping caused by 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 false tripping for a sensitive IT system
monitoring.
• Remove the connection kit for a non-grounded line supply (IT system).
Voltage Sensing Module 10 (VSM10)
Operating Instructions, 11/2017, A5E02142235A
Internal circuit of the VSM10 Voltage Sensing Module
Terminal X530 with connector jumper
4.3 Interface description
Relieve the springs and withdraw the connector
jumper
Electrical installation
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