Siemens NXAirS - Open The Circuit Breaker

NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
20
Operation of NXAirS
13.7 Open the circuit breaker
Manual operation
●
Circuit breaker is in close position.
Preconditons for this operation
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.
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.
Drawing 13. Mechanical open of circuit breaker
Operating procedure
√
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.
Circuit breaker is open.
√
Close/open indicator changes to “0” from “1”. Circuit breaker is open.
Preconditions for this operation
Operating procedure