MINIMUM OIL CIRCUIT BREAKERS

The amount of oil required in bulk type oil circuit breakers is very high making it uneconomical for use. In fact, only one-tenth of the oil is actually used for arc extinction and remaining for insulation. Minimum Oil Circuit Breakers is thus an alternative to bulk type. Minimum Oil Circuit Breakers are usually employed at increased voltage and fault levels.

ADVANTAGES

A low oil circuit breaker has following advantages compared to bulk oil circuit breaker

1. It requires lesser quantity of oil
2. It requires smaller space
3. There is reduced risk of fire
4. Maintenance problems are reduced

DISADVANTAGES

A low oil circuit breaker has following disadvantages compared to bulk oil circuit breaker.