Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A circuit breaker with quick opening contact structure

A circuit breaker and contact technology, applied in circuit breaker parts, circuit breaker contacts, protection switch operation/release mechanisms, etc., can solve the problems of arc voltage rise, limitation, limited opening distance, etc. Improve and improve the short-circuit breaking capacity and reduce the effect of let-through energy

Active Publication Date: 2016-05-11
上海天毅行智能电气有限公司 +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For some current-limiting circuit breakers, before the actual fault short-circuit current of the line reaches the peak value of the expected short-circuit current of the line, the moving contacts will be repulsed under the action of electric repulsion to generate an arc, thereby limiting the further increase of the short-circuit current
[0003] When a general circuit breaker passes a short-circuit current, only the moving contact can be repelled to generate an arc and limit the short-circuit current. Due to the limited opening distance of the moving contact, the increase of the arc voltage will also be limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A circuit breaker with quick opening contact structure
  • A circuit breaker with quick opening contact structure
  • A circuit breaker with quick opening contact structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Combine now figure 1 , figure 2 , image 3 To further illustrate the present invention, a circuit breaker with a quick-opening contact structure includes a base 1, a static contact assembly 2, a rotatable moving contact assembly 3 and an operating mechanism 4, which is characterized in that the The base 1 is provided with a static contact bracket 21, the static contact assembly 2 is hinged on the static contact bracket 21, the moving contact assembly 3 is provided with a moving contact bracket 32, and the moving contact assembly 3 is provided with a moving contact bracket 32. The contact assembly 3 is hinged on the moving contact bracket 32, and an elastic member 24 is also provided between the static contact assembly 2 and the static contact bracket 21 and the moving contact assembly 3 and the moving contact bracket 32. A hook 25 is provided on the static contact bracket 21 , and the elastic member 24 is snapped onto the hook 25 . The bottom of the elastic member 2...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a breaker with a contact structure capable of being quickly opened. Before short circuit current reaches an expected maximum value, moving contacts can be repulsed by electro-dynamic repulsion force, fixed contacts also can be repulsed synchronously to generate electric arcs, voltage of the electric arcs ascends quickly, ascendance of the short circuit current is effectively restrained, after a mechanism is tripped, under the effect of a connection rod, the fixed contacts still stay at a repulsion position, a large open distance between the contacts is guaranteed, let-through energy of the breaker is effectively reduced, and short circuit breaking capacity of the breaker is improved.

Description

technical field [0001] The invention relates to the technical field of low-voltage circuit breakers, in particular to a circuit breaker with a quick-opening contact structure in which moving and static contacts can be simultaneously separated and broken under short-circuit current. Background technique [0002] Low-voltage circuit breakers can be used for short-circuit current protection of lines. For some current-limiting circuit breakers, before the actual fault short-circuit current of the line reaches the peak value of the expected short-circuit current of the line, the moving contacts will be repulsed under the action of electric repulsion to generate an arc, thereby limiting the further increase of the short-circuit current . [0003] When a general circuit breaker passes a short-circuit current, only the moving contact can be repelled to generate an arc and limit the short-circuit current. Due to the limited opening distance of the moving contact, the rise of the arc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/04H01H71/10
CPCH01H1/50H01H71/10H01H73/04
Inventor 丁国辉陆俊谦
Owner 上海天毅行智能电气有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products