Rack Circuit Breaker Out From Service Position To Test / Disconnected Position - GE SecoGear User Manual

SecoGear 24kV-27kV Air Insulation Switchgear

Rack Circuit Breaker out from service position to test / disconnected position

Move circuit breaker truck from transfer truck into the switchgear
a. Check the fixed primary contact and apply an adequate
amount of conductive paste. Check the interlocking
mechanism and apply lubricant on the moving parts to ensure
smooth operation.
b. Place the Circuit Breaker on transfer truck and put in lock
position. (See figure 4/1).
Figure 4/1: VCB truck on the transfer truck
c. Move the transfer truck to the front of the switchgear, turn
the adjusting nut to adjust the height of the transfer truck
platform, (See figure 4/2). Aim the guiding pin at the guiding
jack in front of the switchgear, push and make the transfer
truck engage with the switchgear by using the lock key. At
the same time, insert the front guide rail of the transfer truck
into the bottom guide rail groove of the switchgear truck. (See
figure 4/3).
Figure 4/2: Transfer truck lock
with switchgear
17
VCB locked on
the transfer truck
Figure 4/3: Lock VCB in
switchgear
Warning
The trolley has four (4) nuts for adjusting the platform, to
the same level of the breaker compartment.
d. Push the two sliding cranks inward under the truck to remove
the locked position with the transfer truck, and then push the
truck forward to make it enter the switchgear compartment
and lock it in the disconnect / test position. (See figure 4/4).
e. Operate the lock key releasing lever of the transfer truck to
Figure 4/4: Lock VCB in switchgear
remove the locked relation between the transfer truck and the
switchgear, and then remove the transfer truck.