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Contact system of circuit breaker

A contact system and circuit breaker technology, applied in the directions of circuit breaker contacts, circuit breaker parts, contacts, etc., to avoid electrical damage, reduce ablation and welding, and stabilize contact resistance.

Pending Publication Date: 2021-07-23
武汉长海电气科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The contact system of the existing circuit breaker is usually difficult to meet the above requirements well

Method used

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  • Contact system of circuit breaker
  • Contact system of circuit breaker
  • Contact system of circuit breaker

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Embodiment Construction

[0037] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the following will further explain how the present invention is implemented in conjunction with the accompanying drawings and specific implementation methods.

[0038] refer to Figure 1-Figure 3 As shown, the present invention provides a contact system of a circuit breaker, including a first current-carrying copper bar 1, a second current-carrying copper bar 2, a static main contact 3, a moving main contact 4, and a static arc contact 5 , moving arc contact assembly 6, moving contact rod 9, spring mechanism 10 and soft connection mechanism 11; the first current-carrying copper bar 1 and the second current-carrying copper bar 2 are fixedly installed on the frame of the circuit breaker; the static main The contact 3 and the static arc contact 5 are fixedly installed on the first current-carrying copper bar 1, and the static arc contact 5 is loc...

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Abstract

The invention discloses a contact system of a circuit breaker. The contact system comprises a first current-carrying copper bar, a second current-carrying copper bar, a static main contact, a moving main contact, a static arc contact, a moving arc contact assembly, a moving contact rod, a spring mechanism and a flexible connection mechanism, wherein the first current-carrying copper bar and the second current-carrying copper bar are fixedly installed on the frame of a circuit breaker, the static main contact and the static arc contact are fixedly installed on the first current-carrying copper bar, the static arc contact is located above the static main contact, one end of the spring mechanism is rotatably connected with the frame of the circuit breaker, the other end is rotatably connected with the moving contact rod; the moving main contact is fixedly installed on the side face of the top end of the moving contact rod, the moving arc contact assembly is installed at the top end of the moving contact rod, the moving arc contact assembly is electrically connected with the second current-carrying copper bar through the flexible connection mechanism, the moving arc contact assembly comprises a moving arc contact, the moving arc contact can move within a certain range, and is located above the moving main contact, and the moving main contact and the moving arc contact can move along with the rotation of the moving contact rod.

Description

technical field [0001] The invention relates to the field of switchgear, in particular to a contact system of a circuit breaker. Background technique [0002] For circuit breakers, the contact system is the core component. In order to ensure the stable and reliable operation of the circuit breaker for a long time, it must be done: 1) When the contact system passes the rated current for a long time, the temperature rise does not exceed the value specified in the national standard, and the temperature rise remains stable for a long time; 2) The contact system passes the setting When the short-circuit current is below the tripping value, the contact part of the contact does not weld or relax; 3) During the breaking process of the circuit breaker, the loss of the contact material should be as small as possible; 4) During the closing process of the circuit breaker, the contact contact There should be no fusion welding that cannot be broken, and the contact surface should not be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H1/50H01H9/38
CPCH01H1/50H01H9/38H01H73/04
Inventor 刘哲李宝明李明雷元黄炜杨鹏
Owner 武汉长海电气科技开发有限公司
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