Outdoor vertical type vacuum circuit breaker

Abstract

The invention provides an outdoor vertical type vacuum circuit breaker. According to the outdoor vertical type vacuum circuit breaker, an upper flange of an upper insulator and a lower flange of a lower insulator are wrapped in a silicone rubber shell, so that the original electric clearance and the original creep distance are increased, and the interelectrode external insulation capacity and the ground insulation capacity are improved; in addition, insulation covers are arranged on a high-voltage input port of an upper busbar assembly and a high-voltage output port of a lower busbar assembly respectively, an air path between the upper busbar and the lower busbar is blocked, and then the interelectrode external insulation capacity and the ground insulation capacity are further improved; furthermore, due to the fact that a corrugated pipe is arranged between the lower insulator and a base plate assembly, compared with an existing sealing ring, the outdoor vertical type vacuum circuit breaker has the advantages that a sealed isolation cavity can be formed, the creep distance and the electric clearance are increased, the ground insulation capacity is improved, and the requirement for the level of outdoor protection is met.

Description

technical field [0001] The present application relates to the technical field of vacuum circuit breakers, in particular to an outdoor vertical vacuum circuit breaker. Background technique [0002] At present, the vertical structure vacuum circuit breakers used in electric locomotives and EMUs at home and abroad are mainly 22CB series vacuum circuit breakers. Poor sealing, easily affected by changes in ambient temperature, and poor insulation. In recent years, the 22CB series vacuum circuit breakers, which have frequent flashover faults, can no longer meet the current outdoor insulation performance requirements, especially in heavily polluted environmental conditions, or in thunderstorm weather, they are prone to failure, which affects electric locomotives and The normal running of the EMU. Contents of the invention [0003] In view of this, the present invention provides an outdoor vertical vacuum circuit breaker, which solves the technical problems of poor insulation an...

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Problems solved by technology

[0003] In view of this, the present invention provides an outdoor vertical vacuum circuit breaker, which solves the technical problems of the existing vertical vacuum circuit breakers with poor insulation and sealing

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