Circuit breaker with high arc extinguishing performance

A circuit breaker and arc extinguishing technology, which is applied to circuit breaker components, circuit breaker contacts, circuits, etc., can solve the problems of slow arc root transfer speed and poor arc extinguishing effect, so as to eliminate product insulation problems and improve utilization rate , Improve the effect of arc extinguishing performance

Pending Publication Date: 2021-06-04
EATON HUINENG LOW-VOLTAGE ELECTRICAL (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: In order to overcome the deficiencies of the prior art, the present invention provides a circuit break

Method used

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  • Circuit breaker with high arc extinguishing performance
  • Circuit breaker with high arc extinguishing performance
  • Circuit breaker with high arc extinguishing performance

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Embodiment Construction

[0036] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same time, terms such as "upper", "lower", "le...

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Abstract

The invention discloses a circuit breaker with high arc extinguishing performance, which comprises an arc extinguishing chamber, an upper arc striking sheet, a movable feeler lever and a connecting rod are arranged in the arc extinguishing chamber, the upper arc striking sheet and the movable feeler lever form equipotential through connection, one end of the connecting rod is connected to the upper arc striking sheet, and the other end of the connecting rod is connected to an outgoing line bar. The connection point is any point between the movable feeler lever and the outgoing line bar loop; an equipotential device is additionally arranged in the arc extinguishing system, the utilization rate of the number of the grid pieces of the arc extinguishing chamber can be improved on the premise that the opening distance of the contacts is not changed, it is guaranteed that more grid pieces can play a role in cutting the electric arc, the arc extinguishing performance of a product is improved, the minimum distance between the movable contact and the static contact is L1 after the movable contact is opened and the static contact is opened, the minimum distance between the upper arc striking sheet and the lower arc striking sheet is L2, and L2 is smaller than L1, so that the arc root can be transferred to the upper arc striking sheet and the lower arc striking sheet from the movable contact and the static contact , the burning loss of the movable contact and the static contact is reduced, and the service life of the circuit breaker is prolonged.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to a circuit breaker with high arc-extinguishing performance. Background technique [0002] During the breaking process of the circuit breaker, the longer the arc exists, the more serious the burning damage to the contacts will be, which will cause damage to the circuit system and personal safety. The arc extinguishing system is the core component of the circuit breaker. Its cutting and extinguishing of the arc will directly affect the success of the circuit breaker in breaking the fault circuit and its own life. [0003] Based on this, in order to effectively improve the arc extinguishing performance of the circuit breaker, it is necessary to install more grids in the arc extinguishing chamber, but as the number of grids increases, how to effectively improve the utilization of the grids so that each grid Can successfully cut electric arc and become the pr...

Claims

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Application Information

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IPC IPC(8): H01H71/02H01H73/04H01H73/18
CPCH01H71/0207H01H73/04H01H73/18
Inventor 邱广庭张海燕胡义琴李杰
Owner EATON HUINENG LOW-VOLTAGE ELECTRICAL (JIANGSU) CO LTD
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