Troubleshooting - Siemens NXAirS Manual

Operation of NXAirS

15. Troubleshooting

HV Door
Faults Causes
HV door is locked.
The door of HV
Removable part is not in test
compartment cannot open.
position.
Padlock for movable door is not
unlocked.
The door of HV
Secondary plug of circuit
compartment cannot close.
breaker is not inserted into the
socket.
Removable Part
Faults Causes
Removable part cannot be
Circuit breaker (closed)
moved to working position.
Operating handle is inserted
into the manual operating hole
of feeder earthing switch.
Feeder earthing switch is not
disconnected.
One interlock on control panel is
not unlocked.
Without control voltage.
Door for HV compartment is not
closed.
Circuit breaker is in close
Removable part cannot be
position.
moved to test position.
Operating handle is inserted
into the manual operating hole
of feeder earthing switch.
Door for HV compartment is not
closed.
Without control voltage.
NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
Measures
Use key to release the lock.
Move the removable part to test
position.
Take down the padlock for
movable door.
Insert the plug into the socket.
Measures
Operate the circuit breaker to
open position.
The operating handle shall be
inserted into correct hole.
Disconnect the earthing switch
for feeder.
Unlock the interlock on control
panel.
Restore control voltage.
Close the door for HV
compartment.
Operate the circuit breaker to
open position.
The operating handle shall be
inserted into correct hole.
Close the door for HV
compartment.
Restore control voltage.
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