4.6.4
Open the connection clip to the basic interference suppression module for
operation on an ungrounded line supply (IT system)
If the cabinet unit is operated from a non-grounded supply (IT system), the connection to the
basic interference suppression module of the Power Module must be opened.
Danger to life through electric shock or fire with a closed connection clip for a non-
grounded supply (IT system)
Failure to open the connection clip to the basic interference suppression module on a non-
grounded line supply (IT system) can cause module damage or fire with damage to life due
to an electric shock or smoke gas.
• Open the connection clip to the basic interference suppression module for operation on
Inverter cabinet units
Operating Instructions, 12/2014, A5E32923362A
WARNING
an ungrounded line supply (IT system)
Electrical installation
4.6 Power connections
67