Electrical Engineering ⇒ Topic : Methods of arc extinction
Methods of arc extinction
Commonly used methods of arc extinction are :
By increasing the effective resistance with time current can be reduced to a value insufficient to maintain it. The arc resistance can be increased by
(i) Arc lengthening
(ii) Arc cooling
(iii) Arc splitting
(iv) Arc constraining.
Low resistance interruption.
Here, the arc resistance is kept low, in order to keep the arc energy to a minimurn.This is achieved by
(ii) Gap lengthening
(iii) Blast effect.
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