High-capacity circuit breaker

A circuit breaker, large-capacity technology, applied in the direction of circuits, protective switch parts, electrical components, etc., can solve short-circuit breaking capacity and short-term withstand current low, long manufacturing cycle of circuit breakers, three-phase closing and opening Poor synchronization and other problems, to overcome the defects of the bonding process, improve the short-circuit withstand current, and improve the effect of short-circuit breaking capacity

CN102496527BActive Publication Date: 2015-01-28ANHUI ZHONGDIAN XINGFA & XINLONG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-01-28

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Abstract

The invention discloses a high-capacity circuit breaker. The high-capacity circuit breaker comprises a first circuit breaker and a second circuit breaker which are arranged in parallel, wherein the first circuit breaker is arranged on a first circuit breaker substrate; the second circuit breaker is arranged on a second circuit breaker substrate; the first circuit breaker substrate and the second circuit breaker substrate are integrated to form a substrate of the high-capacity circuit breaker; an operating mechanism which is used for turning on and turning off the high-capacity circuit breaker is arranged on the substrate and arranged in the middle of the high-capacity circuit breaker; and turn-off mechanisms of the high-capacity circuit breaker are symmetrically arranged on the substrate by taking the operating mechanism as symmetric center. The high-capacity circuit breaker can be turned on and turned off in a highly-synchronous mode, and is high in short-circuit breaking capacity, high in short-time current resistance and short in production cycle.
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Description

technical field

[0001] The invention relates to the field of electrical equipment, in particular to a large-capacity circuit breaker. Background technique

[0002] Large-capacity circuit breakers are mainly used in power distribution networks with AC 50Hz, rated voltage 400V, and rated current 4000A to 6300A to distribute electric energy and protect lines and power supply equipment from overload, short circuit, undervoltage, ground fault and other hazards. At present, the large-capacity circuit breakers produced at home and abroad are realized by paralleling two circuit breakers, which are composed of two existing universal circuit breakers with a rated current of 2500-3200A; for example, the application number is "200910233921.1", and the name is The invention patent of "circuit breaker" discloses a structure in which two 3200A small-capacity circuit breakers are combined to form a 5000A large-capacity circuit breaker; in this circuit breaker structure, the A, B, and C thre...

Examples

Embodiment Construction

[0027] The specific implementation manner of the present invention will be described in further detail below by describing the best embodiment with reference to the accompanying drawings.

[0028] Such as Figure 1 to Figure 3 As shown, the large-capacity circuit breaker 6 includes a first circuit breaker and a second circuit breaker arranged side by side, the first circuit breaker is located on the base of the first circuit breaker, and the second circuit breaker is located on the base of the second circuit breaker. On the seat, the first circuit breaker base and the second circuit breaker base are integrated, and the first circuit breaker base and the second circuit breaker base constitute the base 1 of the large-capacity circuit breaker 6; used to realize large-capacity circuit breaker The operating mechanism 7 for opening and closing of the circuit breaker 6 is arranged on the base 1, and the operating mechanism 7 is arranged in the middle of the large-capacity circuit bre...