NXAirS Withdrawable Metal-enclosed Switchgear, Rated Voltage Up to 12kV
33
Operation of NXAirS
15. Troubleshooting
Faults
Causes
Measures
The door of HV
compartment cannot open.
HV door is locked.
Use key to release the lock.
Removable part is not in test
position.
Move the removable part to test
position.
The door of HV
compartment cannot close.
Padlock for movable door is not
unlocked.
Take down the padlock for
movable door.
Secondary plug of circuit
breaker is not inserted into the
socket.
Insert the plug into the socket.
HV Door
Faults
Causes
Measures
Removable part cannot be
moved to working position.
Circuit breaker (closed)
Operate the circuit breaker to
open position.
Operating handle is inserted
into the manual operating hole
of feeder earthing switch.
The operating handle shall be
inserted into correct hole.
Feeder earthing switch is not
disconnected.
Disconnect the earthing switch
for feeder.
One interlock on control panel is
not unlocked.
Unlock the interlock on control
panel.
Without control voltage.
Restore control voltage.
Door for HV compartment is not
closed.
Close the door for HV
compartment.
Removable part cannot be
moved to test position.
Circuit breaker is in close
position.
Operate the circuit breaker to
open position.
Operating handle is inserted
into the manual operating hole
of feeder earthing switch.
The operating handle shall be
inserted into correct hole.
Door for HV compartment is not
closed.
Close the door for HV
compartment.
Without control voltage.
Restore control voltage.
Removable Part
