Kurdkirinê Bîrkarê Berzamînê

Berga bikin circuit breaker maintenance an jî bîrîn da bike, divê li ber vê circuit breaker ve girîngkirina her du tara bi vekirina electrical isolator ê bigire.
Bi vê cihê divê circuit breaker ji her du tara (ji nîvend û ji derve) xebitandin da bikin sedsala û dema ku hewce ye. Circuit breaker bi elektrikî ji nîvend û ji derve operasyon bikin, past bîn mekanîkî ji nîvend. Vê cûrbijarka circuit breaker ya zêde parastî de hatî dike yên ku ser rêkên lêgerandîne dikane.

Bulk Oil Circuit Breaker Maintenance

Ji bo bulk oil circuit breaker, divê ser contact burning pîvan bike. Eger burning yekar e, burn beads rakirin û surface polish bikin. Eger burning weraz e, tips û arcing ring yan new set bikin. Tips yan few times loose û tight bikin paşta ku final tightening bikin.

Di navbera vê, divê extinguishing chamber pîvan bike. Divê li ser breaker unit ve rakirin û pas vê chamber bi insulating oil wash bikin û wê wek upside down bike. Eger condition yek part severe burning nîşan bide, divê chamber dismantled bikin û burned/damaged parts replace bikin.
Navenda din cleaning û lubricating CB mechanism e. Rust li ser mechanism û metal mechanism box surface bi non fluffy cotton cloths rakirin. Mechanism including gear wheel bi high grade grease lubricate bikin. Lê divê friction clutch be lubricated bike. Ji bo minimum oil circuit breaker MOCB, insulator clean bikin û carbon deposition if any bi Trichloro Ethylene or Acetone remove bikin. Manual provided by manufacturer for greasing û lubricating hemî dijîn bikin.

Locking pins of tie rods half yearly pîvan bikin. All the foundation bolts electrical terminal connections at CB power circuit properly tighten bikin paşta ku oxide coating if any remove bikin. This half yearly bikin.
The proper adjustment of auxiliary switch by ensuring correct NO NC contacts at breaker OFF and ON condition must be checked half yearly and in addition to that the auxiliary switch’s contacts should be cleaned properly with help of hard brushes.
The spring charging motor and mechanism should also be cleaned and associated bearing should also be lubricated half yearly.

Minimum Oil Circuit Breaker Maintenance

Ji bo MOCB, breaker monthly check bikin ji bo oil leakage û oil level. Eger oil leakage were found, attend bikin û ji bo low oil level top up oil up to desire level.
Visual inspection of circuit breaker and its operating mechanism along with quality of painting, mechanism kiosk door gasket quarterly carry out bikin. Eger damaged found take proper action.
The oil dash pot in operating mechanism must be checked for oil leakage quarterly. Eger leakage found, replace the defective and damaged O – rings.
It is also highly recommended to ensure the prescribed duty cycle of operation of the breaker including reclosing annually.

Maintenance of Air Blast Circuit Breaker

Ji bo air blast circuit breaker, some special cares to be taken in addition to general instruction for maintenance of operating mechanism. Actually for operating mechanisms and for other some features the maintenance processes and schedules are same for all oil circuit breaker, air circuit breaker, SF6 circuit breaker and vacuum circuit breaker.
In air circuit breaker, the air leakage should be checked as and when it is required. If leakage is found, plug the leakage.
The grading capacitors must be checked for oil leakage monthly. If leakage found plug it.
Yearly, dew point of the operating air at the outlet of the air dryer should be measured with the help of Dew Point Meter or Hygro Meters.

SF6 Circuit Breaker Maintenance

As we said earlier for operating mechanisms and for some other features the maintenance processes and schedules are same for all oil circuit breaker, air circuit breaker, SF6 circuit breaker and vacuum circuit breaker.
In addition to that in SF6 CB some extra care to be taken.
SF6 circuit breaker must be checked for SF6 gas leakage, if unwanted SF6 low gas pressure alarm comes. This is efficiently done by gas leakage detector.
If the circuit breaker is provided with gradient capacitors, these must be checked for oil leakage monthly. If leakage found plug it.
Dew point of SF6 should be checked with the help of dew point meter or hygro meters in every 3 to 4 years interval.

Maintenance of Vacuum Circuit Breaker
In case of vacuum circuit breaker there is nothing special all the processes and schedules are same as in case of other circuit breaker.

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