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1. (WO2018201593) LEAKAGE OVERVOLTAGE TEST CIRCUIT, LEAKAGE OVERVOLTAGE TESTER AND TEST METHOD

Pub. No.:    WO/2018/201593    International Application No.:    PCT/CN2017/090056
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Tue Jun 27 01:59:59 CEST 2017
IPC: G01R 31/02
G01R 19/06
G01R 19/165
Applicants: TIANJIN ZHONGLING SHINENG TECHNOLOGY CO., LTD.
中领世能(天津)科技有限公司
Inventors: MA, Jian
马健
MA, Ji
马骥
Title: LEAKAGE OVERVOLTAGE TEST CIRCUIT, LEAKAGE OVERVOLTAGE TESTER AND TEST METHOD
Abstract:
A leakage overvoltage test circuit and a leakage overvoltage tester, relating to the technical field of leakage detection. The leakage overvoltage test circuit comprises: a transformer circuit (11), a rectifier filter circuit (12), a comparison circuit (13), an output circuit (14), and a voltmeter. The transformer circuit is used for transforming a leakage voltage and outputting the transformed leakage voltage to the rectifier filter circuit. The rectifier filter circuit is used for rectifying and filtering the transformed leakage voltage. The comparison circuit is used for comparing the rectified and filtered leakage voltage with a reference voltage, and outputting a comparison result to the output circuit. The output circuit displays the comparison result. The voltmeter is disposed at an input end of the transformer circuit, the rectifier filter circuit, the comparison circuit or the output circuit. The invention solves the problem in the prior art that there is no way to simultaneously determine if a current leakage voltage is an overvoltage and the type of leakage, and achieves the technical effect of automatically indicating that an active leakage voltage is an overvoltage.