The current zero interruption, in oil and air blast circuit breakers, is achieved by
A)lengthening of the gap
B)cooling and blast effect
C)both (A) and (B)
D)deionizing the oil with forced air

Question

Quizplus · Accepted Answer

The current zero interruption in oil and air blast circuit breakers is achieved by both lengthening of the gap and the cooling and blast effect. Lengthening the gap increases the distance the arc must travel, and the cooling and blast effect rapidly cools and extinguishes the arc.

The Current Zero Interruption, in Oil and Air Blast Circuit