Vacuum interrupter

Details Vacuum interrupter Vacuum interrupter

H - Electricity

01

H

306/215

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

Patent

CA 1219624

ABSTRACT A vacuum interrupter a vacuum envelope of which including in the main a cylindrical metallic housing with at least one end opening and a disc-shaped and aperture insulating end plate of insulating ceramics which is hermetically sealed to the opening end of the housing. A metallized layer to which the opening end of the housing is hermetically brazed is in an outer-diameter region of a sealing surface of the plate, while another metallized layer to which other metallic members of the envelope is hermetically brazed is in an inner-diameter region of the plate. There is provided near at least either of two spaced edges appearing within the envelope of the inner- diameter side and outer-diameter side metallized layers a metallized-layer-edge shield to prevent the occurrence of electric field concentration. The shield much increases the internal dielectric strength of the envelope. - 19 -

427978

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