Positions Of The Contactor Truck - Siemens NXAIR Operating Instructions Manual

14.6 Positions of the contactor truck

General description of positions of the contactor truck:
Service position
The contactor truck is connected with the busbar system and the outgoing feeder. The auxiliary circuit of the
contactor truck is connected through the low-voltage connector.
Test position
The contactor truck is disconnected from the busbar system and the outgoing feeder. The auxiliary circuit of
the contactor truck is connected through the low-voltage connector.
Disconnected position
The contactor truck is disconnected from the busbar system and the outgoing feeder. The auxiliary circuit is
disconnected by pulling out the low-voltage connector.
Short instruction for racking the contactor truck:
Racking the contactor truck manually from test / disconnected position to service position:
Step 1
Insert and turn double-bit key
from by
90°
Racking the contactor truck manually from service position to test / disconnected position:
Step 1
Insert and turn double-bit key
from by
90°
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Operating the contactor panel with panel width 600 mm
Step 2
Insert and turn
hand crank
as far as it will go
to
and pull it off
Step 2
Insert and turn
racking crank
as far as it will go
to
and pull it off
NXAIR / ≤ 40 kA
Step 3
Turn and remove double-bit key
from by
90°
Step 3
Turn and remove double-bit key
from by
90°
to
to
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