GE Industrial Solutions Entellisys Installation - Manual (Page 61)

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Entellisys Low Voltage Switchgear
Chapter 7. Operating the Switchgear
7-4 Entellisys Switchgear
Accessories
Future Circuit Breaker Compartments
Breaker compartments designed for future use are complete
and ready to use. These breaker compartments have a steel
panel to cover the door cutout, Fig. 7-4. To prepare the
circuit breaker compartment for use, remove the steel outer
cover.
WARNING: Terminals behind the steel barrier may be
energized.
AVERTISSEMENT: Il se peut que les bornes à l’arrière
de la barrière d’acier soient sous haute tension.
Fig. 7-4. Future-use breaker compartments
Circuit Breaker Key Interlock
General
A circuit breaker key interlock is available to provide
protection against unauthorized operation. See Fig. 7-5.
The key interlock is mounted with two one-way screws and
lockwashers on the left side of the breaker compartment.
The interlock system is designed so that the key may be
removed from the lock only when the breaker is tripped and
the lock bolt is extended. With the bolt extended, the
breaker is rendered trip free only in the CONNECT position
in this compartment.
The breaker may be operated (open, trip, charge, close) in
the TEST position even when the lock bolt is extended and
the key removed.
Key Interlock Operation Check
The operation of the key interlock should be checked as
follows:
1. With the breaker in the CONNECT position, manually
trip the breaker. This then allows the interlock trip
slide to be pushed in. When the trip slide is in, the lock
bolt may be extended and the key removed. The
breaker will remain trip free in the CONNECT position
until the key is returned and the lock bolt is retracted.
Fig. 7-5. View showing circuit breaker key interlock to provide
protection against unauthorized operation
2. If desired, the breaker may be moved to either the
TEST position while the key is removed from the lock.
In these positions, the breaker can be operated for
checking or maintenance.
Test and Disconnect Padlock Device
General
WARNING: This padlock lockout does not provide
equipment de-energization, isolation and grounding
required for maintenance personnel safety. See
instruction book DEH-203 or DEH-204 for details.
AVERTISSEMENT: Le mécanisme de verrouillage à
cadenas ne fournit pas la mise hors tension adéquate de
l’équipement, l’isolation et las mise à la terre requis pour
assurer la sécurité du personnel de maintenance. Voir les
instructions DEH–203 ou DEH–204 pour les details.
A test and disconnect rackout mechanism padlock device is
available to prevent unauthorized racking of the breaker.
The rackout mechanism for circuit breakers and FRE may be
locked in either the DISCONNECT or TEST position.