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9 . m a I N Ta I N I N G T h e s w I TC h G e a r
9. Maintaining the switchgear
9.1 Maintenance requirements
General
A periodic maintenance schedule must be
established to obtain the best service from the
switchgear. An annual check of the switchgear
devices and all connections should be made as
a minimum requirement. Equipment subject to
highly repetitive operation may require more
frequent maintenance. A permanent record of
all maintenance work should be kept. The record
should include a list of periodic checks and tests
made, the date they were made, the condition of
the equipment, and any repairs or adjustments that
were performed. Maintenance employees must
follow all recognized safety practices, such as
those contained in NFPA 70B: Electrical Equipment
Maintenance, and NFPA 70E: Standard for Electrical
Safety in the Workplace and in company or other
safety regulations.
Warning: Solid insulation surrounding an energized
conductor and power apparatus must never be
relied upon to provide protection to personnel.
Avertissement: La protection du personnel ne doit
jamais reposer uniquement sur l'isolation entourant
un conducteur alimenté et un appareil électrique.
For specific information regarding the
maintenance of devices, such as circuit breakers,
relays, meters, etc., refer to the separate
instruction book furnished for each device.
9.2 Breaker and instrument compartments
Periodic inspection of the circuit breaker is
recommended at least once a year. More frequent
inspections are recommended where severe load
conditions, dust, moisture or other unfavorable
conditions exist, or if the vital nature of the load
warrants it. Always inspect the breaker after a
short-circuit current has been interrupted.
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