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Multifunctional proofing and grounding handcart for centrally installed switchgear

A grounding trolley, multi-functional technology, applied to the grounding device of switchgear, electrical components, switchgear, etc., can solve the problems of arc fire accidents and arc burns of staff, and achieve convenient operation, high power supply reliability, and reduced planning The effect of external blackout probability

Inactive Publication Date: 2016-06-08
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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  • Multifunctional proofing and grounding handcart for centrally installed switchgear
  • Multifunctional proofing and grounding handcart for centrally installed switchgear

Examples

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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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PUM

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Abstract

The invention discloses a multifunctional proofing and grounding handcart for a centrally installed switchgear. The handcart comprises a coming in and out control circuit for controlling electrical coming in and out of a handcart, and a proofing and grounding circuit for controlling electrical opening of a proofing and grounding switch of the handcart. The handcart is convenient and safe to operate. Due to reliable operation of the grounding handcart, safety can be brought to maintainers, and the probability of unplanned outage can be effectively reduced, so that high power supply reliability is provided to users, economic benefit is brought to clients indirectly, and social credibility and recognition can be improved for operation of the electrical power system.

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): H02B11/28H02B11/167H02B3/00
CPCH02B11/28H02B3/00H02B11/167
Inventor 徐晓轶黄霆钱霜秋汤向华江辉丁雪峰袁健华张敏杨鸣鞠易黄金鑫毛东进江陈桢程亮程璐毛艳芳陆春锋韩斌刘彬彬李勇生刘海华周小勇马青山罗云吴杰朱建国白杨叶颖杰曹锦晖潘静娟周嘉王亮王鹏马月婷胥峥
Owner STATE GRID CORP OF CHINA
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