Panels With Switching-Device Truck - Siemens NXAIR Operating Instructions Manual

30.2 Panels with switching-device truck

Interlocking of switching-device truck
Fault
Switching-device truck cannot be
pushed completely into the panel
and interlocked.
Switching-device truck cannot be
pulled out of panel.
High-voltage door cannot be closed.
High-voltage door cannot be open.
Switching-device truck
Fault
Actuating opening cannot be open
(switching-device truck cannot be
moved to service position).
Double-bit key for releasing the
switching-device truck can be
inserted, but not turned to the right.
110-0134.9 / 14
Cause
Positions of feeder earthing switch
operating mechanism (switching-
device truck) and feeder
earthing switch (panel) not in line.
Interlocking of switching-device
truck closed.
Low-voltage connector is not
plugged on.
Switching-device truck 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
Trouble shooting
Remedy
Bring the positions of the
feeder earthing switch
operating mechanism
(switching-device truck) and the
feeder earthing switch (panel)
into line.
Open interlocking of switching-
device truck.
Plug on the low-voltage
connector.
Rack the switching-device truck
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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