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 / gunasekaran
insulation properties of SF6 is 2-3 time than air and it is
electro negative gas so it absorb more electron at the time
of fault and normal operating condition.in acb current
chopping is occur it is will make arc between the breaker if
you go high voltage.in vcb vacuum is good insulator than air.
so higher voltage level we r using vcb SF6 breaker
| Is This Answer Correct ? | 24 Yes | 6 No |
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