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Contact system for circuit breaker

A contact system and circuit breaker technology, which is applied to circuit breaker contacts, circuit breaker components, etc., can solve the problems that arcs cannot be completely extinguished and the safety hazards of circuit breakers, and can meet the requirements of rapid arc extinguishing and enhanced arc extinguishing ability Effect

Pending Publication Date: 2018-09-28
SHANGHAI LIANGXIN ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the arc generated by the circuit breaker cannot be completely extinguished, and it is easy to overflow the arc extinguishing chamber, causing a safety hazard to the use of the circuit breaker

Method used

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  • Contact system for circuit breaker
  • Contact system for circuit breaker
  • Contact system for circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0033] as attached Figure 1a , 1b As shown in and 2, an arc extinguishing system of a circuit breaker includes an arc extinguishing chamber 1 and a contact system 2, and the contact system 2 includes a moving contact system 201 and a static contact system 202, and the moving contact The engagement or breaking of the system 201 and the static contact system 202 controls the on-off of the circuit breaker circuit, wherein:

[0034] as attached Figure 4 As shown, the moving contact system 201 includes a long moving contact assembly 201a, and short moving contact assemblies 201b are arranged on both sides or one side of the long moving contact assembly 201a. The short moving contact assembly 201b is long, and the long moving contact assembly 201a and the short moving contact assembly 201b can rotate around the same rotation center, as shown in the attached Figure 5 As shown, the long moving contact assembly 201a is provided with a front long moving contact 201a01 and a rear lo...

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PUM

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Abstract

The invention discloses a contact system for a circuit breaker, which comprises a contact system (2), wherein the contact system (2) comprises a moving contact system (201) and a stationary contact system (202); the engagement or breaking of the moving contact system (201) and the stationary contact system (202) controls on-off of the circuit breaker circuit. The contact system for the circuit breaker is characterized in that the moving contact system (201) and the stationary contact system (202) are correspondingly provided with two sets of contacts. The contact system of the circuit breakerimproves the structure of the contact system of the circuit breaker, thereby enhancing the arc extinguishing capability of the circuit breaker, and ensuring that the electrical life and breaking capacity of the frame circuit breaker meet the relevant standard requirements.

Description

technical field [0001] The invention belongs to the technical field of low-voltage electrical appliances, and specifically relates to a contact system of a circuit breaker, which is suitable for direct current and alternating current power supply systems. Background technique [0002] The circuit breaker is the most important power distribution equipment in the low-voltage power distribution system. With the continuous improvement of the power supply and power transmission and distribution equipment requirements of the power engineering team, the performance requirements for circuit protection switches are also getting higher and higher, miniaturization, high Performance, modularization, and high reliability are the main development directions of air circuit breakers at this stage. The contact and arc extinguishing system are important components of the circuit breaker. The design of the contact shape and size in the contact system is very critical, which is directly related...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/04H01H73/18
CPCH01H73/04H01H73/18
Inventor 琚纪红杨园李强张亚欣向洪岗于贻鹏
Owner SHANGHAI LIANGXIN ELECTRICAL