Open The Circuit Breaker - Siemens NXAirS Manual

NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
Operation of NXAirS
Preconditons for this operation
Operating procedure
Preconditions for this operation
Operating procedure
20
13.7 Open the circuit breaker
Manual operation
Circuit breaker is in close position.
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Drawing 13. Mechanical open of circuit breaker
Danger!
The unstable auxiliary voltage will impact the electrical interlock and mechanical interlock. If
the interlock mechanism moves upwards, manual operation is not allowed due to the electrical
interlock.
Prior to manual operation, ensure to perform necessary external unlock at first.
Turn the movable door to sides through the nut.
Insert the operating pole into the door through the operating hole and push inside
the close switch.
√ Close/open indicator changes to "0" from "1". Circuit breaker is open.
Take out the operating pole from the operating hole.
Electrical operation
Circuit breaker is in close position.
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Circuit breaker is open.
√ Close/open indicator changes to "0" from "1". Circuit breaker is open.