To adjust height
Guide pins
Slot to lock contactor
Release lever
•
Insert the double-bit key (7/5), press inwards
and turn counter- clockwise against the stop
to release truck lock. Draw the withdrawable
truck out onto the service trolley and secure
it in the slots by turning the double-bit key
clockwise
•
Press release lever to the left to disengage the
service trolley from the switchgear panel
•
Secure the position of the shutters with
padlock (4/11)
Insertion from the service trolley into the
ISOLATED position:
Open the contactor compartment door and
move the contactor truck and trolley in front of
the panel ensuring that its hinged part is locked
into the slots in the partition plate under the
contactor truck. Unlock the contactor truck
using a double-bit key and push the contactor
off the trolley into the panel. Lock the contactor
truck into the panel, unhinge the trolley from
the partition plate and remove the trolley.
7.1.3 Racking from IN SERVICE to ISOLATED
position
With the contactor IN SERVICE you need to
rotate the racking handle anti-clockwise to
withdraw the truck to the ISOLATED position.
Further the label indicates you need to rotate the
racking handle anti-clockwise for 14 rotations to
reach the ISOLATED position.
When the ISOLATED position is reached the
racking handle comes to a hard stop.
It is, therefore, a good practice to rotate the
racking handle anti-clockwise till a hard stop is
reached to ensure the contactor truck is in the
designed ISOLATED position.
40
U N I G E A R Z V C
M E D I U M V O L T A G E P R O D U C T S
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7/6 Service trolley
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7/6