Arc extinguishing system and circuit breaker

An arc extinguishing and arc extinguishing grid technology, applied in circuit breaker parts and other directions, can solve problems such as short circuit, failure of breaking test, poor insulation effect, etc.

Pending Publication Date: 2021-06-04
ZHEJIANG TENGEN ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the insulation effect of the dynamic and static contacts is not good, and it is easy to form a short circuit during breaking, which leads to the failure of the breaking test, so as to provide an arc extinguishing system with good insulation effect , and a circuit breaker with this arc extinguishing system

Method used

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  • Arc extinguishing system and circuit breaker
  • Arc extinguishing system and circuit breaker
  • Arc extinguishing system and circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] This embodiment provides a circuit breaker, which is equipped with an arc extinguishing system, including:

[0038] The contact device 1 includes a static contact 11 and a movable contact 12. The static contact 11 has a contact plate 2, a conductive frame 21 and a contact 22 connected in sequence, and the movable contact 12 can be in contact with or separated from the contact 22;

[0039] The arc extinguishing housing 3 has an arc extinguishing chamber 31 for inserting the moving contact 12, and an insulating assembly 4 for separating the conductive frame 21 from the moving contact 12, and the conductive frame 21 is arranged on the arc extinguishing outside the housing 3.

[0040] The above improvements are as follows: Figure 4 and Figure 5As shown: the static contact 11 includes a contact plate 2, a conductive frame 21 and a contact 22 connected in sequence, and the contact 22 is used to connect with the moving contact 12. The point 22 is contacted for electrifica...

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PUM

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Abstract

The invention provides an arc extinguishing system and a circuit breaker. The arc extinguishing system comprises a contact device which comprises a static contact and a moving contact, the static contact is provided with a contact plate, a conductive frame and a contact point which are connected in sequence, and the moving contact can be in contact with or separated from the contact point; the arc extinguishing system further comprises an arc extinguishing shell which is provided with an arc extinguishing chamber for inserting the moving contact and an insulating assembly for separating the conductive frame from the moving contact, and the conductive frame is arranged outside the arc extinguishing shell. The arc extinguishing system can overcome the defects that in the prior art, the insulating effect of the moving contact and the static contact is poor, short circuit is easily formed during breaking, and a breaking test fails.

Description

technical field [0001] The invention relates to the technical field of power distribution, in particular to an arc extinguishing system and a circuit breaker. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break the current under normal circuit conditions and can close and break the current under abnormal circuit conditions within a specified time. The main function is to cut off and connect the load circuit. , And cut off the faulty circuit, prevent the accident from expanding, and ensure safe operation. For the common molded case circuit breaker in the circuit breaker, all the parts are sealed in the plastic case, which can automatically cut off the power supply when the current exceeds the rated value. [0003] The arc extinguishing device of the existing molded case circuit breaker mainly includes the arc extinguishing chamber and the contact system. When the electrical appliance is short-circuited, the circuit bre...

Claims

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Application Information

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IPC IPC(8): H01H73/18
CPCH01H73/18
Inventor 袁辉高腾飞陈丰飞葛世伟令狐绍江范奇文臧卫
Owner ZHEJIANG TENGEN ELECTRIC
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