Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker

A technology of breaking device and circuit breaker, which is applied to high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problem of unavoidable opening overvoltage, etc., and achieves large rated current, convenient installation and use, and wide application range. Effect

Inactive Publication Date: 2008-12-10
王光顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the contact can only be connected to the closing resistor when closing, which can avoid closing overvoltage. When it is applied to a long line, it cannot avoid opening overvoltage.

Method used

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  • Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker
  • Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker
  • Multi-stage arc suppressing breaking device for extra-high voltage circuit breaker

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Embodiment Construction

[0023] As shown in the drawings, the UHV circuit breaker multi-stage arc extinguishing and breaking device according to the present invention includes a housing 1, an insulating cylinder 7 installed in the housing 1, and static contacts and moving contacts arranged in the insulating cylinder 7 . There is an air chamber 77 between the shell 1 and the insulating cylinder 7, and the air chamber 77 can be filled with insulating gas such as SF6 to improve the insulation effect. In addition, for the convenience of installation, the insulating cylinder 7 is designed as a structure that can be installed in sections. The insulating cylinder 7 includes an outer cylinder and an inner cylinder sleeved in the outer cylinder. The inner cylinder has a segmented structure, and the horizontally arranged components such as the insulating guide plate 34, the inner insulating support plate 72 and the outer insulating support plate 73 are installed on each segment of the inner cylinder. Junction....

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Abstract

This invention relates to electric equipment using extra high voltage breaker multilevel arc extinction breaking device. The main contact, arc extinction contact and resistance contact set in the insulating barrel and using spring floating connecting form static contact to execute switch on and off action. The main contact, arc extinction moving contact and resistance form the moving contact. The problem of electric arc burning the main contact can be avoided because of the minimum interstice between the main contacts, the small interstice between the arc extinctions and the maximum between resistances, and the main contacts separate first and last joint in feed motion. Switching on over voltage can also be avoided because of ahead connection of on and off resistance during on and off process.

Description

technical field [0001] The invention relates to a multi-stage arc extinguishing and breaking device for an ultra-high voltage circuit breaker used in electric power equipment. Background technique [0002] Power equipment switches need to have breaking contacts. When used as high-voltage or extra-high voltage circuit breakers, the faster the breaking speed and the shorter the time, the better, because it is easy for the moving contacts and static contacts of high-voltage electrical equipment to close. The faster the arc is generated, the shorter the time for arc generation and the less damage to the equipment. In addition, a long-distance live line with no load or a small load will form a very high overvoltage in the power grid when it is opened and closed. If these overvoltages are not limited by a special device, then transitional insulation measures must be taken in the UHV power grid, which will inevitably increase the cost significantly. An effective way to limit over...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H33/04H01H33/12H01H33/16
Inventor 王光顺
Owner 王光顺
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