Siemens SINAMICS S150 NEMA Operating Instructions Manual page 84

Electrical installation
4.6 Power connections
Removing the connector jumper in the VSM10 Voltage Sensing Module
When operating the cabinet unit on an ungrounded line supply (IT system), at the Voltage
Sensing Module (VSM10), remove the plug-in jumper in terminal X530 at the lower side of
the component.
Use two screwdrivers or another suitable tool to relieve the holding springs in the terminal
and then withdraw the plug-in jumper.
Terminal X530 with connector jumper
Note
Replacing a VSM10 Voltage Sensing Module
When replacing a Voltage Sensing Module VSM10 by one with a different article number,
then inform yourself about the applicable boundary conditions.
4.6.8 Setting the circuit breaker
Description
For rated currents above 800 A, the standard circuit breaker is used to disconnect the
voltage and provide overload and short-circuit protection. The circuit breaker is controlled
and supplied within the converter.
NOTICE
Material damage caused by switching on too frequently
The cabinet unit can be damaged if it is switched on too frequently.
• Do not switch on the cabinet unit more frequently than every 3 minutes.
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Relieve the springs and withdraw the connector
jumper
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives