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Isolating switch of on-load tap-changer

A technology of on-load tap changer and isolating switch, applied in electric switches, air switch parts, high-voltage/high-current switches, etc., can solve the problems of large sliding friction, affecting the service life of switches, etc. Ensure stable and tight contact and reliable electrical characteristics

Pending Publication Date: 2021-12-03
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a disconnector for an on-load tap changer, aiming to solve the problem that the existing clip-type disconnector has a large sliding friction that will significantly affect the service life of the switch

Method used

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  • Isolating switch of on-load tap-changer
  • Isolating switch of on-load tap-changer
  • Isolating switch of on-load tap-changer

Examples

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Embodiment Construction

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] see Figure 1 to Figure 3 , which shows a preferred structure of the isolating switch of the on-load tap changer provided by the embodiment of the pre...

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Abstract

The invention provides an isolating switch of an on-load tap-changer. The isolating switch comprises: a switch shell; a shifting fork rotating shaft arranged in the switch shell; four static contacts; a switch shifting fork, wherein one end of the switch shifting fork is rotatably arranged on the shifting fork rotating shaft, and the other end of the switch shifting fork is provided with a moving contact; and a dead point spring, wherein the first end of the dead point spring is connected with the switch shell, and the second end of the dead point spring is connected with the switch shifting fork. Parts of parts of the isolating switch are loaded through the switch shell, so that the isolating switch serves as an integral switch structure and serves as an independent component to be installed and designed; the switch shifting fork is rotatably connected to the shifting fork rotating shaft, so that the switch shifting fork swings and drives the moving contact to be in switching contact with the two columns of static contacts, and the transition on-off time sequence of the vacuum envelope is controlled; and meanwhile, the dead point position of the dead point spring is arranged between two static positions where the moving contact is contacted with the two columns of static contacts, so that stable and compact contact between the moving contact and the two columns of static contacts is ensured, and the electrical characteristic is reliable.

Description

technical field [0001] The present invention relates to the field of on-load tap changer technology, in particular to an isolating switch of an on-load tap changer. Background technique [0002] The on-load tap-changer is a special switch used to switch the taps of the primary or secondary windings to adjust the output voltage when the transformer is loaded. [0003] Replacing transitional copper-tungsten contacts in the original on-load tap-changer with vacuum bubbles is a new trend in the development of on-load tap-changer technology in recent years. Maintenance and maintenance, prolong the service life of the switch. In the vacuum on-load tap-changer that uses vacuum bubble transition switching, it is necessary to use an isolating switch to control the on-off sequence of the vacuum bubble. The isolating switch has no fixed structure, but it must meet the electrical performance requirements and the mechanical switching sequence requirements. The existing isolating switch...

Claims

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Application Information

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IPC IPC(8): H01H31/02H01H9/02H01H3/32H01H31/04H01H33/666
CPCH01H31/02H01H9/02H01H3/32H01H31/04H01H33/6661
Inventor 汪可洪军南凯刚张书琦李戈琦李刚杨帆郑文斌赵鼎堂梁宁川李鹏王绍武李金忠程涣超孙建涛刘雪丽徐征宇
Owner CHINA ELECTRIC POWER RES INST
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