Installing and removing current transformers – GE Industrial Solutions Entellisys Installation User Manual

Page 62

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56

Entellisys Low Voltage Switchgear

Chapter 7. Operating the Switchgear

Fig. 7-6. Test & disconnect position padlock device (EG-08/16/20

breakers)

Padlocking the EG-08/16/20 Breakers. (See Fig. 7-6.)

To padlock these breakers, proceed as follows:

1.

The circuit breaker compartment door must be opened

to put the padlock on; however, there is no interference

with the door after the padlock has been placed in

position.

2.

With breaker moved to the appropriate position, push

down on the sliding lock plate until its holes are aligned

with those in the stationary plate. Insert and lock the

padlocks.

Fig. 7-7. Racking mechanism padlock device (EGS-32/40/50 breakers)

Padlocking the EG-32/40/50 Breakers & EG-32/40/50

FRE Fuse Rollout Element (See Fig. 7-7.)


1.

The circuit breaker compartment door must be opened

to put the padlock on; however, there is no interference

with the door after the padlock has been placed in

position.

2.

The device will permit locking the breaker in the DIS-

CONNECT or TEST position. Hasps, which pivot on

the corner post in combination with the circuit breaker

crank interlock, prevent movement of the breaker from

its locked position.

3.

Align the appropriate hasp (front hasp for DISCON-

NECT position or rear hasp for the TEST position),

insert, and lock the padlock.

Fig. 7-8. Compartment padlock device (EG-08/16/20, EG-32/40/50 EG-

32/40/50 FRE compartments)

Padlocking the EG-08/16/20, EG-32/40/50, EG-

32/40/50 FRE Compartments (See Fig. 7-8.)

1.

The circuit breaker compartment door must be opened

to put the padlock on; however, there is no interference

with the door after the padlock has been placed in

position.

2.

Padlocks will prevent the acceptance of breakers or FRE

in the compartment

Installing and Removing Current
Transformers

WARNING: Do not operate any current transformer with

secondaries open-circuited. Be sure to short-circuit

secondary before moving a current transformer.

AVERTISSEMENT: Tout transformateur de courant ne

doit pas être opéré avec les secondaires dans un état de

circuits ouverts. Assurez-vous de court-circuiter les

secondaires avant de bouger un transformateur de

courant.

Phase current transformers (CT's) in Entellisys Low Voltage

Switchgear are mounted on the stationary primary

disconnect studs in the breaker compartment and are readily

accessible for inspection and replacement. Neutral current

transformers, if present, are located in the bus compartment

or in the transition section.

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