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