Circuit breaker maintenance process and quality standards - Database & Sql Blog Articles

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Circuit breaker maintenance process and quality standards:

1, maintenance cycle

After four years of overhaul, the overhaul of the general random group for general maintenance does not require the disassembly of the circuit breaker.

Minor repairs are determined by the operation of the equipment but are subject to minor repairs at least once a year.

If there is a sudden failure during operation, the inspection or repair should be carried out according to the actual situation.

2, overhaul maintenance project

Circuit breaker drive mechanism overhaul

Arc chute and main contact overhaul

Secondary circuit inspection and component testing

Overhaul of the knife, the tool holder and the switch seat

Circuit breaker mechanical characteristics test

Circuit breaker maintenance process

3, the drawer switch cleaning (should be clean and ashless)

Use a rocker to shake out the drawer switch to clean the circuit breaker, control transformer, contactor, relay, terminal insert and other related components with a brush, net cloth, alcohol, etc.

Clean the operating mechanism guides, etc. Check that the terminal wiring is secure and that the screws are loose.

4. Overhaul of drawer frame and drawer bottom case

Shake the handle to slide it in the track. And the indicator clock can accurately indicate the "separated", "test" and "on" positions. And it can beep and locked in the corresponding position. And draw a certain amount of lubricating oil on the roller on the drawer rail and the bottom of the drawer should be shaken in and out without jamming.