Miniature circuit breaker current limiter

A technology of small circuit breakers and current limiting devices, applied in circuit breaker parts, electromagnetic release switches, protection switch operation/release mechanisms, etc. good effect

Inactive Publication Date: 2011-05-18
徐浩明 +2
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned background technology, the hydraulic electromagnetic...

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
  • Miniature circuit breaker current limiter
  • Miniature circuit breaker current limiter
  • Miniature circuit breaker current limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to be able to understand the technical content of the present invention more clearly, the following is further described in conjunction with the embodiments:

[0028] See Figure 1 ~ Figure 4 As shown, the current limiting device of the miniature circuit breaker of the present invention includes an electric repulsion mechanism, an operating system, and a hydraulic electromagnetic trip unit. The electric repulsion mechanism includes a static contact 5 and a moving contact 6 arranged in opposite but parallel current directions. , The moving contact 6 and the static contact 5 are in contact with each other, and the opening and closing of the moving contact 6 and the static contact 5 is controlled by the operating system including the toggle link lock 4, so The movable contact 5 is electrically connected to the current coil 15 of the hydraulic electromagnetic trip unit, the operating system and the hydraulic electromagnetic trip unit share the toggle link lock 4, and ...

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 miniature circuit breaker current limiter. An electric repulsion mechanism of the miniature circuit breaker current limiter comprises a static contact and a moving contact which have opposite current direction, are parallel to each other and contact mutually. The separation and reunion of the static contact and the moving contact are controlled by an operating system comprising a toggle type connection rod lock catch of an energy storage device, the moving contact is electrically connected with the current coil of a hydraulic electromagnetic release, the operating system and the hydraulic electromagnetic release share the toggle type connection rod lock catch, and the hydraulic electromagnetic release pushes the toggle type connection rod lock catch to unlock to make the circuit breaker break. Preferentially, the static contact is provided with a magnetic iron sheet and an arc guide plate; the moving contact is provided with an arc angle, the toggle type connection rod lock catch comprises a tripper, a lock catch, a connection plate, a support piece and a pull rod, or the toggle type connection rod lock catch comprises a connection rod, a toggle, a mandril, a support piece and a pull rod, and the hydraulic electromagnetic release comprises a support, a pole shoe, an armature and an oil damper. The miniature circuit breaker current limiter has the advantages of unique design, simple structure, rapid action, strong circuit breaking capacity, good stability, safety and energy saving, thereby being suitable for large-scale popularization and application.

Description

Technical field [0001] The present invention relates to the technical field of circuit control, in particular to the technical field of circuit breakers, and more specifically to a current limiting device for small circuit breakers. Background technique [0002] The existing miniature circuit breakers have been widely used in buildings and residential distribution boxes as the overload and short circuit protection of electrical circuits. However, the overload protection of these circuit breakers uses bimetallic thermal elements and the short-circuit current protection uses electromagnetic trippers. This is because the bimetallic thermal element causes the bimetallic sheet to overheat and bend excessively during the short-circuit current. After the fault is eliminated, the bimetallic sheet will not return to the original position, which will change the breaking characteristics, in order to change the traditional tripping In 1957, ABB company invented the "current-limiting" miniat...

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
IPC IPC(8): H01H71/24H01H73/36H01H73/18
Inventor 徐浩明梁淑青
Owner 徐浩明
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap