Circuit Breaker Theory O.C.B. Advantage

Factor affecting performance of plane break oil circuit breaker:-

The factor which influence the performance of pain break oil circuit break are as follows

1. The critical length of the break
2. The speed of the contact movement. In order to extinguish the arc earlier , the speed should be high therefore double break circuit breakers are preferred.
3. The head of oil above the contacts.
4. The clearance between the live contacts and the earthed pressurized tank.

The factor which influence on increased breaking capacity are considerable head of oil and large clearances. Thus for large breaking capacity, the circuit breaker will be large.