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Checking auxiliary device for handcart type current transformer and checking system and method

A technology of transformer calibration and calibration device, which is applied in the field of auxiliary devices for handcart type transformer calibration, which can solve the problems of personal and equipment safety hazards, inability to guarantee wiring errors, increase working time, etc., and save wiring time , reduce the quantity, improve the effect of work efficiency

Pending Publication Date: 2019-03-08
STATE GRID CORP OF CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method needs to open the secondary wiring baffle of the handcart, and then untie all the wiring of the secondary terminal that was connected before the calibration can be performed. After the calibration is completed, the wiring needs to be reconnected. Increased working time, reduced work efficiency, and the repeated disassembly and assembly of the secondary wiring due to calibration, cannot guarantee the wiring errors caused by the negligence of the calibration personnel, and wrong wiring will bring many safety hazards to people and equipment

Method used

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  • Checking auxiliary device for handcart type current transformer and checking system and method
  • Checking auxiliary device for handcart type current transformer and checking system and method
  • Checking auxiliary device for handcart type current transformer and checking system and method

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Embodiment Construction

[0028] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0029] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0030] As introduced in the background technology, the wiring work in the existing handcart-type transformer cal...

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Abstract

The invention relates to a checking auxiliary tool for a handcart type current transformer, and a checking system and method, the checking auxiliary tool comprises a panel and an aviation socket matched with an aviation plug of a handcart type current transformer to be calibrated, the wiring terminal of the aviation socket is connected with a binding post arranged on the panel through a secondaryside current conducting wire, the binding post is used for being connected with a checking device, the auxiliary tool is used, the verification wiring work time is greatly shortened, time and labor are saved, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of transformer calibration equipment, in particular to an auxiliary device for calibration of a handcart-type transformer, a calibration system and a method. Background technique [0002] To check the handcart-type transformer, it is first necessary to conduct an appearance inspection. The appearance of the inspected transformer should be intact, and the nameplate and signs should meet the requirements of the regulations. Then carry out the wiring work before the calibration. The next step is to conduct an insulation test. Use a 2.5kV megohmmeter to measure the insulation resistance of the transformer. The power frequency withstand voltage test uses a sinusoidal voltage with a frequency of 50Hz±0.5Hz and a distortion of no more than 5%. Then use the polarity indication function or error measurement function of the calibrator to determine the polarity of the transformer. Finally, error measurement, stabilit...

Claims

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Application Information

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IPC IPC(8): G01R35/02
CPCG01R35/02
Inventor 李伟孙维杰孙涛徐杰孙荣光任增田林向东王庆刘明义宋昆孔德怀段海军李成睿孟平李爱国张祥坤李峰张玉宏
Owner STATE GRID CORP OF CHINA