why vacuume circuit breaker is not used for EHV

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why vacuume circuit breaker is not used for EHV..

Answer / swapnil mohite

Because properties of vaccume is not much efficient to work in
EHV........instead of vaccume " Sulfure hexaaflouride gas "
having more efficient properties to work in EHV line....

Is This Answer Correct ?    5 Yes 0 No

why vacuume circuit breaker is not used for EHV..

Answer / sakshi

vacume ckt breaker of high rupture capacity are more
expensive than other type of ckt breaker..more over the
interrrupters is limited for 20kv,thus above for 36kv ,two
interrrupters are required,,,

n in event of vaccum loss at Extra high voltage,itz repair
is immposible..

Is This Answer Correct ?    3 Yes 0 No

why vacuume circuit breaker is not used for EHV..

Answer / k.prakashchandra

Perfect vacuum is not possible.

Is This Answer Correct ?    1 Yes 0 No

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