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Short-circuit impedance tester

A technology of short-circuit impedance and tester, which is applied in the field of tester to achieve the effect of improving power supply reliability, reducing the time with full station load, and shortening the connection time

Inactive Publication Date: 2010-06-09
SHANGHAI BOFAN ENTERPRISE DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The transformer short-circuit impedance test is a routine test item in the transformer pre-test. In view of the current situation that the test time is too long, it is of practical significance to study how to reduce the short-circuit impedance test time and improve the test efficiency.

Method used

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with accompanying drawing.

[0011] see figure 1 , the figure shows a short-circuit impedance tester of the present invention, including a short-circuit impedance tester body 1, the instrument surface of the short-circuit impedance tester body 1 is provided with a grounding interface 12, a power supply interface 13, a power switch 14, A-phase, B-phase, C-phase wiring port 15 is also provided with a calculator 2, a voltage changeover switch 3, a short-circuit changeover switch 4, a voltmeter 5, an ammeter 6, an overvoltage indicator light 7, an overcurrent indicator light 8, an overvoltage indicator light Setting window 9 , overcurrent setting window 10 , voltage adjustment button 11 .

[0012] The invention transforms the voltmeter, ammeter and voltage regulator required for testing into one instrument, the wiring mode is fixed, no manual wiring is required for the connecting lines between the instrum...

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Abstract

The invention discloses a short-circuit impedance tester, which comprises a short-circuit impedance tester main body. The surface of the short-circuit impedance tester main body is provided with a counter, a voltage change-over switch, a short-circuit change-over switch, a voltmeter, an ampere meter, an over-voltage indicator lamp, an over-current indicator lamp, an over-voltage setting window, an over-current setting window and a voltage regulator button. The short-circuit impedance tester has the advantages of simple structure and fixed connecting lines, can reduce the climbing times for the transformer, shorten the climbing time, improve the test safety, and the shorten wiring time.

Description

technical field [0001] The invention relates to a tester, in particular to a short-circuit impedance tester. technical background [0002] The transformer short-circuit impedance test is a routine test item in the transformer pre-test. In view of the current situation that the test time is too long, it is of certain practical significance to study how to reduce the short-circuit impedance test time and improve the test efficiency. [0003] At present, when testing the short-circuit impedance of a transformer, it is necessary to combine a control box, an ammeter, and a voltmeter into a test device. There are two test lines, and a total of five connecting lines are required. There are 6 test terminals. The shortcoming of many connection lines; In addition, the transformer short-circuit impedance test currently requires testers to climb up and change the test lines many times, resulting in unsafe factors for the testers. How to overcome the shortcomings of the prior art is an u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/02
Inventor 沈伟周亮周青李春华
Owner SHANGHAI BOFAN ENTERPRISE DEV
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