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Cabinet-in/out control circuit for multifunctional electricity-verification and grounding trolley for centrally installed switchgear

A technology of grounding trolley and control circuit, which is applied to the grounding device of switchgear, panel/switch station circuit device, electrical components, etc., which can solve the problems of arc fire accidents and arc burns of staff, and achieve convenient operation and high power supply reliability Sexuality, the effect of improving social credibility and recognition

Inactive Publication Date: 2016-05-04
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is very likely to cause arc burns to the staff or cause arc fire accidents
[0005] It can be seen that in the live state, pushing the grounded handcart to cause personal injury and property loss is an inevitable safety accident

Method used

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  • Cabinet-in/out control circuit for multifunctional electricity-verification and grounding trolley for centrally installed switchgear
  • Cabinet-in/out control circuit for multifunctional electricity-verification and grounding trolley for centrally installed switchgear

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Embodiment Construction

[0021] An operation method of a multi-function electric inspection and grounding trolley with a central cabinet, the electric entry and exit of the handcart are controlled by the control circuit for entering and exiting the cabinet, the electric inspection grounding of the handcart, and the electric opening of the grounding switch is controlled by the electric inspection grounding circuit The control circuit for entering and exiting the cabinet includes a motor M2 that drives the movement of the dolly, and the power supply line of the motor M2 is provided with the main contact of the control motor M2 work, parallel contactor KM3, and contactor KM4, and the power supply line is connected with a travel switch S1, The travel switch S1 is connected with a parallel control circuit, the parallel structure of a routing button SB3 in the parallel control circuit and an auxiliary contact of the contactor KM3 is connected in series with a contact of the contactor KM4, the contactor KM3 an...

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Abstract

The invention discloses a cabinet-in / out control circuit for a multifunctional electricity-verification and grounding trolley for centrally installed switchgear. The cabinet-in / out control circuit comprises a motor M2 for driving the trolley to move, wherein the power supply circuit of the motor M2 is provided with main contacts of shunt-wound contactor KM3 and contactor KM4 for controlling the operation of the motor M2; the power supply circuit is connected with a travel switch S1; the travel switch S1 is connected with a shunt-wound control circuit; one circuit of the shunt-wound control circuit is formed by series connection of a shunt-wound structure between a button SB3 and an auxiliary contact of the contactor KM3, and a contact of the contactor KM4, the contactor KM3, and a travel switch S9; and the other circuit of the shunt-wound control circuit is formed by series connection of a shunt-wound structure between a button SB4 and an auxiliary contact of the contactor KM4, and a contact of the contactor KM3, the contactor KM4, and a travel switch S8. The cabinet-in / out control circuit is convenient and safe to operate.

Description

[0001] This application is a divisional application with application number: 201410341290.6, application date: 2014.07.18, and name "Multi-function electrical inspection of central cabinet, operation method of grounding trolley". technical field [0002] The invention relates to an operation method of a multi-functional electric testing and grounding trolley with a central cabinet. Background technique [0003] In recent years, metal-enclosed air-insulated switchgear has been widely used in substations with voltage levels of 550kV, 220kV and below in power systems and other industrial user substations. Switchgear also came into being. Among them, for the convenience and safety of maintenance, the grounded handcart is one of the essential handcart equipment. Its purpose is to prevent electric shock accidents caused by wrong power transmission or misoperation of switchgear during maintenance. At present, the widely used grounding handcart is composed of three simple contact ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B3/00
CPCH02B1/24H02B3/00H02B11/133H02B11/167H02B11/28
Inventor 黄霆徐晓轶钱霜秋袁健华江辉汤向华丁雪峰张敏杨鸣鞠易黄金鑫毛东进江陈桢程亮马青山罗云吴杰朱建国白杨叶颖杰曹锦晖程璐毛艳芳陆春锋韩斌刘彬彬李勇生刘海华周小勇潘静娟周嘉王亮王鹏马月婷胥峥
Owner STATE GRID CORP OF CHINA
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