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Arc chute for air circuit breaker

阅读:468发布:2021-09-14

专利汇可以提供Arc chute for air circuit breaker专利检索,专利查询,专利分析的服务。并且The arc chute of low-voltage air magnetic type electric circuit breaker comprises a stack of spaced-apart steel plates. Some of the plates are coated with ceramic insulating material on their uppermost regions and are located between groups of the uncoated plates to increase the electrical breakdown path and inhibit flashover at the upper end of the arc chute where exhaust gases are hottest.,下面是Arc chute for air circuit breaker专利的具体信息内容。

1. In combination in a low-voltage air magnetic type electric circuit breaker, a pair of contacts between which an arc is established upon separation, a pair of spaced-apart arc runners to which said arc is transferred from said contacts, and a stack of spaced-apart plates located between said pair of arc runners, all of said plates in said stack comprising a flat single sheet of magnetizable material and being of the same size and configuration and having their top edges aligned in the same plane, each sheet having front and rear surfaces and top, bottom and side edge surfaces, at least one but not all of said sheets in said stack having all surfaces of at least the upper one-third portion thereof remote from said contacts coated with a single layer of refractory arc resistant electrical insulating material to provide a coated plate, said stack of plates comprising a plurality of groups of uncoated plates, each group being separated from an adjacent group by one coated plate.
2. A combination according to claim 1 wherein each of said groups comprises two plates.
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