ABB VD4 Series, Дополнительное руководство

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8
VD4 -3 6 K V CR A DLE R ETROFIT SOLUTION
SER V I C E I N S T R U C T I O N M A N UA L
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Specific VD4-36kV cradle retrofit
instructions
VD4-36kV cradle Position of hole for hook
1250A C
2000A C
Handling with trolley:
- To lift and handle the circuit-breaker, circuit
breaker lifting trolley can also be used as
shown in figure 8.2.
In order to lift the circuit breaker by trolley, circuit
breaker needs to be placed on firm platform of
wooden / plastic pallet of height @ 100mm.
The trolley is then positioned near the pallet & the
resting platform of trolley is brought to the level
@ 5mm lower to the pallet surface on which CB is
placed. Lock the front wheels by pressing locking
bracket provided on swivel roller wheel.
Circuit breaker is pulled on the resting platform
of the trolley. With the help of rotating handle of
trolley, the resting platform can be moved up &
down depending on the direction of rotation of
the handle.
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Fig 8.1
In order to insert circuit breaker into the VHA 36
panel, position the trolley in front of the panel &
lift the CB resting surface of trolley up to the level
of surface of the guiderails in the panel. Move the
trolley closer to panel with both side wheel of the
CB common truck approximately equally spaced
from both guide rails. Lock the front wheels of
trolley by pressing locking bracket provided on
swivel roller wheel. Push the CB inside the panel
by taking care that front wheels of common
trucks enters in the guiderails.
Once the CB is entirely inserted in panel, unlock
the swivel roller wheel of the trolley & move the
trolley back away from panel & lower the CB
resting face & move away trolley from panel.
In order to place CB precisely in TEST position
inside panel, lock the left & right latches of the
common truck in vertical slots of left & right
guide rail so that CB can be locked in TEST
position.
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Fig 8.2