Vacuum interrupter having primary electrode surrounded by...

Details Vacuum interrupter having primary electrode surrounded by... Vacuum interrupter having primary electrode surrounded by...

H - Electricity

01

H

306/217

H01H 33/66 (2006.01) H01H 33/662 (2006.01) H01H 33/664 (2006.01)

Patent

CA 1063656

Abstract of the Disclosure When the butt contacts of a vacuum arc discharge device are parted, the movable one of the contacts is withdrawn into a steel shield, giving the device high current interruption capability. The shield can be grounded to an endwall of the device of electrically isolated therefrom. Facing the stationary contact with a hardened steel enables it to withstand the dielectric stress extant at recovery. Facing the movable contact with a refractory metal allows high current and voltage interruption capability without adversely affecting current chopping performance, while limiting contact erosion and weld forces.

254930

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