漏電検出装置

Apparatus for detecting ground leakage

Abstract

<P>PROBLEM TO BE SOLVED: To detect ground leakage and determine the location at which the ground leakage occurs in a ground leakage detecting apparatus for detecting the ground leakage of a power supply apparatus, using an AC power generator as a power supply. <P>SOLUTION: The ground leakage detecting apparatus is provided with a detection point forming circuit 8A for forming a detection point connected to three-phase output lines of the AC power generator 2 through resistors, a voltage detecting circuit 8B for detecting a voltage between the detection point and the ground, a ground leakage detecting means 8D for detecting the existence of the ground leakage from the voltage detected by the voltage-detecting circuit 8B, and a ground leakage occurring location determining means 8E for determining the location, at which the ground leakage occurs from a period of the voltage between the detection point and the ground. <P>COPYRIGHT: (C)2006,JPO&NCIPI
【課題】交流発電機を電源として用いる電源装置の漏電を検出する漏電検出装置において、漏電の検出と漏電発生箇所の判定とを行うことができるようにする。 【解決手段】交流発電機2の3相の出力線に抵抗器を通して結合された検出点を形成する検出点形成回路8Aと、検出点と接地間の電圧を検出する電圧検出回路8Bと、電圧検出回路8Bにより検出される電圧から漏電の有無を検出する漏電検出手段8Dと、検出点と接地間の電圧の周期から漏電発生箇所を判定する漏電発生箇所判定手段8Eとを設けた。 【選択図】 図2

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    CN-102818973-ADecember 12, 2012武汉大学一种基于相序电压幅值比较的故障选相方法及其装置
    DE-102015207456-B3September 22, 2016Bender Gmbh & Co. KgIsolationsüberwachungsgerät mit Spannungsüberwachung und zugrunde liegendes Verfahren
    EP-2309280-A1April 13, 2011Hitachi Automotive Systems, Ltd.Dispositif de détection de défaut de terre
    US-8355226-B2January 15, 2013Hitachi Automotive Systems, Ltd.Ground fault sensing device