Trouble Shooting; Panels With Withdrawable Part - Siemens NXAIR Operating Instructions Manual

Trouble shooting

30 Trouble shooting

30.1 Panels with withdrawable part

Interlocking of withdrawable part
Fault
Withdrawable part cannot be
pushed completely into the panel
and interlocked.
Withdrawable part cannot be pulled
out of panel.
High-voltage door cannot be closed.
High-voltage door cannot be
opened.
Withdrawable part
Fault
Actuating opening cannot be
opened (withdrawable part cannot
be moved to service position).
Double-bit key for releasing the
withdrawable part can be inserted,
but not turned to the right.
427
Cause
Positions of feeder earthing switch
operating mechanism
(withdrawable part) and feeder
earthing switch (panel) not in line.
Interlocking of withdrawable part
closed.
Low-voltage connector is not
plugged on.
Withdrawable part is in service
position.
Cause
Operating lever is inserted in the
manual CLOSE/OPEN operating
mechanism of the feeder
earthing switch.
Operating slide for opening the
actuating opening is locked.
Operating slide for opening the
actuating opening is interlocked by
the electromagnetic interlock.
Circuit-breaker is in CLOSED
position.
Feeder earthing switch is in
CLOSED position.
High-voltage door is not closed.
NXAIR / ≤ 40 kA
Remedy
Bring the positions of the
feeder earthing switch
operating mechanism
(withdrawable part) and the
feeder earthing switch (panel)
into line.
Open interlocking of
withdrawable part.
Plug on the low-voltage
connector.
Rack the withdrawable part to
test position.
Remedy
Remove the operating lever.
Open the padlock.
Request external release.
Switch the circuit-breaker to
OPEN position.
Switch the feeder
earthing switch to OPEN
position.
Close the high-voltage door.
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