Rapid electric-arc extinguishing assembly in circuit-...

Details Rapid electric-arc extinguishing assembly in circuit-... Rapid electric-arc extinguishing assembly in circuit-...

H - Electricity

01

H

306/252

H01H 33/08 (2006.01) H01H 9/36 (2006.01)

Patent

CA 1156298

41PR-6143 RAPID ELECTRIC-ARC EXTINGUISHING ASSEMBLY IN CIRCUIT-BREAKING DEVICES SUCH AS ELECTRIC CIRCUIT BREAKERS ABSTRACT A rapid arc extinguishing assembly includes an arc chute comprising a large number of essentially parallel deionizing plates each in form of thin magnetically permeable, electrically conductive plates bent in U-shape, with the curve of the U facing the circuit breaker contacts and the arms thereof insulated from each other by a thin insulation sheet. To promote arc extinction by the arc chute and accelerated breaker contact separation, the breaker contacts are flanked by a magnetic assembly comprising opposed columns of parallel, spaced ferromagnetic plates embedded in an insulating material. The columns may be magnetically coupled by a yoke to create a closed slot in which the breaker movable contact travels.

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