GE Industrial Solutions Entellisys Installation User Manual

Page 20

Entellisys Low Voltage Switchgear

Chapter 3. Description

The shutters are partially retracted when the breaker is in

the Disconnect Position. As the circuit breaker is racked from

the Disconnect Position to the Test Position, the rear of the

circuit breaker frame depresses the shutter operating lever

(3) to cause the shutters to fully retract. The operating lever

springs (4) cause the operating lever (3) to remain in contact

with the circuit breaker frame during operation. As the

breaker is racked from the Test Position to the Connected

Position, the shutters remain fully retracted.

Fig. 3-7 also shows the shutter assembly with the shutters

manually retracted to show the location of the primary

disconnect stabs (5) behind the shutter assembly.

Circuit breakers mounted in 22-inch wide compartments

(EG-08, EG-16, EG-20) are supported on drawout rails (7),

Fig.

3-5. Larger EG-32 and EG-40 circuit breakers and fuse

rollout carriages are installed in 30-inch wide compartments
and are supported on drawout rails (5),

Fig.

3-6. The EG-50

circuit breaker is installed in a 38-inch wide compartment

and is supported on drawout rails (similar to Item 5, Fig. 3-

6).

Fig. 3-7. Entellisys primary disconnect shutter assembly (30-inch wide compartment).

Shutters manually retracted

1. Stationary barrier
2. Shutters (not visible in

retracted position)

3. Operating lever
4. Operating lever springs
5. Primary disconnect stabs