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Special short-circuit tool for secondary terminal during withstand voltage test of current transformer

A technology of current transformer and withstand voltage test, which is applied in the direction of instruments, measuring electrical variables, measuring devices, etc., can solve problems such as prolonging engineering operation time, low work efficiency, and high voltage that endangers personal safety, and meets engineering operation requirements , reliable performance and simple structure

Pending Publication Date: 2018-01-23
DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This processing method is cumbersome, prolongs the engineering operation time, and leads to low work efficiency
More importantly, if it is not handled properly, there will be misconnection, missing connection or poor contact, which will also lead to the opening of the secondary circuit of the current transformer, generating high voltage that endangers personal safety, and even burning the current transformer equipment

Method used

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  • Special short-circuit tool for secondary terminal during withstand voltage test of current transformer
  • Special short-circuit tool for secondary terminal during withstand voltage test of current transformer
  • Special short-circuit tool for secondary terminal during withstand voltage test of current transformer

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Embodiment Construction

[0011] The present invention will be further described below in conjunction with accompanying drawing:

[0012] Such as figure 1 As shown, the main conducting wire 1 of this embodiment is connected in series with four shunt conducting wires 5 , and the main conducting wire and the shunting conducting wires are respectively connected by a T-shaped three-way device 4 . The two ends of the main communication line are respectively connected with expandable sockets 2 and 3, wherein the socket 2 is a banana female interface, and the socket 3 is a banana male interface. The end of the shunt conducting wire is also connected with an expandable socket 11, which is the same as the socket 3 and is a banana male interface.

[0013] The structure of plug and play alligator clip 6 is as follows figure 2 As shown, the tail of the alligator clip is provided with a plug 7 to realize plug-in cooperation with the expandable socket at the end of the shunt conducting wire. The alligator clip c...

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PUM

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Abstract

The invention relates to a special short-circuit tool for a secondary terminal during the withstand voltage test of a current transformer. The tool is characterized by comprising a main conduction line, shunting conduction lines, an extensible socket, and a plug-and-play a crocodile clip. The two ends of the main conduction line are respectively connected with a male head interface and a female head interface of the extensible socket. One ends of at least two shunting conducting lines are connected with the main conduction line. The tool of the invention is simple in structure, reliable in performance, strong in expansibility, good in plug-and-play function, and suitable for different types of phoenix terminal rows. As a result, the engineering operation requirements of the AC withstand voltage test of the current transformer can be met.

Description

technical field [0001] The invention relates to a tool for a withstand voltage test of a current transformer in a power system, in particular to a special shorting tool for a secondary terminal used in a withstand voltage test of a current transformer. Background technique [0002] When the current transformer is subjected to external construction frequency withstand voltage test, it is required that the secondary winding must be short-circuited and grounded together with the casing. Before the test starts, the test personnel need to perform a special short-circuit grounding treatment on the secondary current circuit on the Phoenix terminal block in the switch cabinet / combined control cabinet. At present, there is no special tool for short-circuiting the secondary terminals in this operation. The usual method is to use the discarded secondary cables for stripping and then take out the copper wire for winding. This processing method is relatively cumbersome, prolongs the eng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/02G01R1/04
Inventor 戚革庆孔剑虹戚壮李钢刘建国于佳申王文涛李论
Owner DALIAN POWER SUPPLY COMPANY STATE GRID LIAONING ELECTRIC POWER