Short-circuit apparatus for handcart type switch cabinet CT current-rising test

A handcart-type switch and test technology, applied in switchgear, electrical components and other directions, can solve the problems of increasing the difficulty of up-current work, inconvenient disassembly and installation, narrow cable room space, etc., so as to reduce work intensity and safety hazards. , labor saving and operation, the effect of simple structure

Inactive Publication Date: 2018-01-12
广西电网有限责任公司桂林供电局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the narrow space of the cable room behind the switchgear, it is inconvenient to disassemble and install. It takes about 20 minutes to complete each interval. It will take a lot of time to complete the up-current test of all intervals, which not only affects the acceptance progress, but also increases the up-current difficulty of work

Method used

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  • Short-circuit apparatus for handcart type switch cabinet CT current-rising test
  • Short-circuit apparatus for handcart type switch cabinet CT current-rising test

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Embodiment Construction

[0016] The content of the present invention will be further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited thereto.

[0017] refer to figure 1 , a handcart type switchgear CT ascending current test shorting device, including test clip 7, copper nose 6, two copper wires 4, contact plate 1, movable joint 2 and fixed joint 3.

[0018] One end of the two copper wires 4 is aligned and overlapped with one of the clamp handles of the test clip 7 and fixedly connected through the copper wire nose 6, and the copper wire nose 6 is used to compress the two copper wires 4; the other end of the first copper wire 4-1 One end is connected to the contact plate 1, the movable joint 2 is arranged on one side of the contact plate 1, the diameter of the contact plate 1 is equal to the inner diameter of the movable joint 2, and the inner wall of the movable joint 2 is provided with internal threads; the second copper wire 4-2...

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Abstract

The invention discloses a short-circuit apparatus for a handcart type switch cabinet CT current-rising test. The short-circuit apparatus comprises a test clamp, a copper wire lug, two copper wires, acontact plate, a movable joint and a fixed joint; wherein one ends of the two copper wires are aligned and overlapped and fixedly connected with one clamp handle of the test clamp, the copper wire lugis used for tightly pressing the two copper wires, the other end of the first copper wire is connected with the contact plate, the movable joint is arranged on one side of the contact plate, the diameter of the contact plate is equal to the inner diameter of the movable joint, an inner thread is arranged on the inner wall of the movable joint, the other end of the second copper wire is connectedwith the fixed joint, an outer thread is arranged on the outer wall of the fixed joint, the movable joint and the fixed joint are matched and assembled to connect two short-circuit apparatuses. The apparatus is simple in structure, can replace manual wire clamping, and achieves safe, labor-saving and reliable operation. The acceptance, the calibration and the first-aid repair efficiency of the relay protection professional CT is improved. The working intensity and potential safety risk of workers are reduced.

Description

technical field [0001] The invention relates to a data and power transmission device, in particular to a short circuit device for CT up-current test of a handcart type switch cabinet. Background technique [0002] Most of the high-voltage rooms of existing substations use rows of switch cabinets as the low-voltage side intervals (including the main transformer low-voltage side, capacitors, station transformers, line outlets, etc., each outlet is also called "outlet interval"), and very few parts are 35kV The medium voltage measurement also adopts the form of switchgear outlets. Taking the 10kV low-voltage side switchgear as an example, for a substation with multi-branch wiring on the low-voltage side, for each additional section of 10kV bus, the corresponding outlet will increase 6-8 outlet intervals, and each Each outlet interval has an independent current transformer (abbreviated as CT), and each CT includes at least three windings for protection, measurement and metering....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02B3/00
Inventor 张志文刘铝秦华锟龙跃达
Owner 广西电网有限责任公司桂林供电局
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