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Sunday, October 9, 2011

Why use the VCB at High Transmission System ? Why can't use ACB?


Why use the VCB at High Transmission System ? Why can't use ACB?
Answer:Actually the thing is vacuum has high arc queching property compare to air because in VCB ,the die electric strengths equal to 8 times of air . That y always vaccum used as inHT breaker and air used as in LT .

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