6
ABB IB 6.2.15.7-1C
I
NSERTION
AND
R
EMOVAL
This section describes the process for inserting the breaker into the disconnect position of the switchgear and the
removal of the circuit breaker from the disconnect position. Racking of the circuit breaker to and from the test and
disconnect position is covered in the following section. The following rules should always be observed when inserting
or removing the circuit breaker device from the switchgear compartment.
•
DO NOT
attempt to insert the circuit breaker into any circuit breaker compartment prior to inspection of the
breaker. Compare breaker nameplate rating with switchgear rating. Verify secondary voltages on the breaker
and in the circuit breaker compartment.
•
DO NOT
attempt to insert a closed circuit breaker
.
•
ALWAYS
inspect breaker compartment to ensure that it is free of obstructions, tools, or other equipment.
I
NSERTION
:
(Refer to Appendix A and Fig. 1)
(from Withdrawn Position to Disconnect Position)
1. Align breaker and ramp, dolly or lift truck with circuit breaker compartment
2. Pull handles (10) to center (this withdraws Cell Interlock Tabs (11) allowing breaker to be inserted)
3. Push breaker into breaker compartment with handles. Interlocks may restrict insertion. (Ref.
Interlocks
)
4. Align Cell Interlock Tabs with Circuit Breaker Compartment Slots (A)
5. Push Handles out to fully engage Cell Interlock Tabs into Circuit Breaker Compartment Slots
6. Visually check that Cell Interlock Tabs are engaged in Circuit Beaker Compartment Slots (if Cell Interlock Tabs
are not fully extended, racking is prevented)
Breaker is now in the Disconnect Position
R
EMOVAL
:
(Refer to Appendix A and Fig. 1)
(From Disconnect Position to Withdrawn Position)
1
Visually check to see the Truck (12) is against the Locator Channel
2
Pull Handles to center (this withdraws Cell Interlock Tabs; allowing breaker to be removed and discharging the
mechanism)
3
Pull the breaker from Circuit Breaker Compartment with the Handles onto the required transportation device.
4
Breaker is now in the Withdrawn Position.
DANGER
Do not attempt to remove the breaker from the circuit
breaker compartment without the required ramp, dolly or
lift truck. Refer to the specific switchgear Installation
and Maintenance manual for details.
INSERTION AND REMOVAL
