Quick trip breaker with function of pneumatic actuation trip

A technology of air pressure actuation and circuit breaker, which is applied in the direction of circuit breaker with excessive current, overload protection circuit breaker, circuit, etc., and can solve problems such as the failure of the tripping action of the rotating shaft and the inapplicability of circuit breaker maintenance.
CN101604601AActive Publication Date: 2009-12-16SHANGHAI NOARK ELECTRIC
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI NOARK ELECTRIC
Publication Date
2009-12-16

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Abstract

The invention relates to a quick trip breaker with the function of pneumatic actuation trip, which comprises a plurality of single-stage breaking units and an operation mechanism with a shared trip rod, wherein each of the single-stage breaking units comprises a shell, a contact device, an arc control device, a wiring device, an over-current trip device and a pneumatic trip device consisting of actuation mechanisms and transmission mechanisms. One single-stage breaking unit is provided with one or two sets of transmission mechanisms in coupled connection with the actuation mechanisms of the single-stage breaking unit, so the transmission mechanisms can be shared by two adjacent breaking units, and the trip action of the actuation mechanisms of the two adjacent breaking units can be transmitted to the shared trip rod of the operation mechanism through a contact arm. One single-stage breaking unit is provided with one or two sets of actuation mechanisms which can transmit the trip action of the stage breaking unit to the transmission mechanism on the connection side synchronously. The breaker has the function of quick trip, and can improve breaking capacity to the maximum, simplify assembly, make the action more reliable, and provide convenience for on-site maintenance.
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Description

technical field

[0001] The invention relates to a fast-tripping circuit breaker with air pressure actuated tripping function, in particular to an improved circuit breaker which realizes fast tripping and tripping by means of high-pressure gas energy formed by breaking short-circuit current with contacts. Background technique

[0002] With the development of the power industry and the transformation of urban and rural power grids, the development of smart buildings in cities, rural urbanization construction, and industrial automation control have put forward higher technical requirements for my country's circuit breakers. my country's circuit breakers are moving towards "small" The most basic thing is to improve the reliability of circuit breakers. Considering that the current design varieties, specifications and performance of circuit breakers in my country are not perfect and not enough for application, users will inevitably have some unreasonable deviations in the actual en...

Claims

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