Why VCB and SF6 breakers to be used in HT used by cant ACB
of higher rating to be used for 11kv and 33kv.
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Answer Posted / mohammed amjath
In high voltage we use SF6 or VCB.Because if we go to ACB
the arc quenching will no be proper.Where as if we use vacum
or sulphur hexafloride the arc quenching will be 100percent.
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