remote control equipment - Indian Railways Institute of Electrical ...

Overhauling of the switchgear :
Overhauling of the switchgear shall be taken up when anyone of the following
conditions are met:
a) The circuit breaker has completed 10 years of service .
b) Number of electrical switching operation exceeds 3000.
c) Number of Mechanical operation exceeds 6000.
d) Breaker has completed 20 full short circuit tripping operations .
Trained persons as per Instruction Manual issued by the manufacturer shall
carry out Overhauling of the switchgear.
3.9.11 Pre-Monsoon Checks
Before onset of monsoon season, it should be ensued that for every
equipment no scheduled maintenance work is overdue. In the scheduled inspection
just preceding the monsoon, special attention should be paid to the inerable points
likely to permit ingress of moisture resulting in reduction in dielectric strength of the
equipments and rusting of parts.
3.9.12 Overhaul Schedule for Equipment
1. Transformers In case of an internal fault or once in
7-10 years.
2. Operating mechanism Once in 10 years or as and when any major
of Circuit Breaker and part like springs have to be replaced or the
Interrupters. mechanism is sluggish, and needs shop
attention and overhaul.
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