GAS-INSULATED CIRCUIT BREAKER Russian patent published in 1995 - IPC

FIELD: high-voltage switching devices. SUBSTANCE: super charged-gas insulated circuit breaker is built so that when breaker movable electrode goes off fixed electrode, insulating gas flow built up in the action functions to suppress arc. In order to direct gas to arc, provision is made for insulating lug forming gas channel together with insulating cover that closes movable electrode. Insulating cover is made of insulating material containing filler to prevent cover is made of insulating material containing filler to prevent ingress of arc line of force into cover. Insulating cover is characterized by higher dielectric constant than insulating lug. EFFECT: reduced electric field strength at front end of movable electrode. 14 cl, 8 dwg