13.1 Solenoid interlocks (optional) in the operating mechanism for withdrawable parts / switching-
device trucks
The operating mechanisms for withdrawable parts /switching-device trucks of circuit-breakers, disconnecting
and contactor panels can be equipped with solenoid interlocks according to the customers' requirements. In
as-delivered condition, these solenoid interlocks are bypassed by means of locking bolts, as the solenoid
interlock would block the disconnector and earthing switch functions if there was no auxiliary voltage available.
13.2 Removing the locking bolts
After completion of the installation work and availability of auxiliary voltage in the switchgear, the locking bolts
must be taken out of the operating mechanisms for the withdrawable parts / switching-device trucks and be
disposed of.
Preconditions
• Auxiliary voltage in the switchgear is available
• Withdrawable part / switching-device truck in test position
• Low-voltage connector plugged in
• High-voltage door open
Remove 1 or 2 locking bolts of the solenoid
interlock at the withdrawable part / switching-
device truck of the circuit-breaker panel or the
disconnecting panel.
Remove 1 locking bolt of the solenoid
interlock at the switching-device truck of
the contactor panel with panel width 435
mm
The solenoid interlocks in the operating mechanism for withdrawable parts /
switching-device trucks are now ready for operation.
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