Back door interlock of high voltage switchgear

A high-voltage switchgear and back door technology, applied in the direction of electric switches, substation/switch layout details, electrical components, etc., to achieve the effect of preventing casualties

Inactive Publication Date: 2011-12-21
国网河南栾川县供电公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above two requirements are sometimes not required to be in the same cabinet but to be implemented between cabinets. At this time, a single mechanical interlock often cannot meet the requirements.

Method used

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  • Back door interlock of high voltage switchgear
  • Back door interlock of high voltage switchgear
  • Back door interlock of high voltage switchgear

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] The present invention can be explained in more detail by the following examples, and the present invention is not limited to the following examples;

[0020] combined with figure 1 , 2 Or the rear door interlocking of the high-voltage switchgear described in 3, including a lock structure for preventing mis-opening; a safety protection structure for preventing mis-locking; the described locking structure for preventing mis-opening includes a door frame 1, a door 28 , lock A2, lock B5, anti-mis-opening plate 31, movable lock 3, vertical connecting rod 7, horizontal connecting rod 24, angular plate 23, circuit breaker opening and closing operating lever 26 and circuit breaker 27, in the door frame 1 The middle part is provided with an upper and lower structure through the groove 4, and the door 28 side of the lower part of the through groove 4 is connected to the sharp surface of the middle part of the anti-mis-opening plate 31 through the shaft. The anti-mis-opening plat...

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PUM

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Abstract

A rear door interlocking of a high-voltage switchgear, which relates to an interlocking device, which not only realizes the prevention of mis-opening of live high-voltage switchgears, but also prevents the high-voltage switchgear from being locked by mistake At the same time, the weight of the human body makes the bottom plate sink, and the pressure column drives the fan-shaped plate, horizontal connecting rod and circuit breaker to make the high-voltage switchgear unable to be energized, realizing the double insurance to prevent casualties.

Description

【Technical field】 [0001] The invention relates to an interlocking device, in particular to an interlocking double-safe rear door of a high-voltage switch cabinet. 【Background technique】 [0002] The "interlocking" of high-voltage switchgear is an important measure to ensure the safe operation of the power grid, ensure equipment and personal safety, and prevent misuse; GB3906-1991 "3-35 kV AC metal-enclosed switchgear" clearly stipulates this; general The "interlock" is described as: preventing mis-opening and closing of the circuit breaker; preventing load opening and closing of the isolating switch; The above-mentioned five items to prevent electrical misoperation are referred to as "five preventions"; "five preventions" devices can generally be divided into three categories: mechanical, electrical and comprehensive; at present, there are many types of high-voltage switches on the market, and most of them are There are relatively complete interlocking methods; however, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B1/00H02B1/26H01H9/22
Inventor 吴新立段建伟王小宝郝鹏辉
Owner 国网河南栾川县供电公司
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