Handling With Trolley - ABB VD4 Addendum Manual

8

V D 4 - 3 6 K V C R A D L E R E T R O F I T S O L U T I O N S E R V I C E I N S T R U C T I O N M A N U A L

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Specific VD4-36kV cradle retrofit

instructions

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Fig 8.1

VD4-36kV cradle

1250A

2000A

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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.

Position of hole for hook

C

C

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