The power system deals with voltage above 11KV, is referred as high voltage switchgear. As the voltage level is high the arcing produced during switching operation is also very high. So, special care is to be taken during designing of high voltage switchgear. High voltage circuit breaker is the main component of HV switchgear, hence high voltage circuit breaker (CB) should have special features for safe and reliable operation. air blast circuit breaker and SF6 circuit breaker are mostly used for high voltage switchgear.
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