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circuit breaker hvdc Recovery of Polluted wika

Classification of Circuit Breakers | Devices | Electrical ... Sulphur hexafluoride circuit breakers in which SF 6 under pressure is used to extinguish the arc. SF 6 gas have excellent dielectric, arc quenching, chemical and other physical properties and has proved its superiority over other arc quenching mediums such as oil or air.. 5. Vacuum circuit breakers in which the fixed and moving contacts are housed inside a permanently sealed vacuum interrupter.

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