公开(公告)号：US08779776B2

公开(公告)日：2014-07-15

申请号：US12312628

申请日：2007-11-23

Applicant: Karl Nathan Edwards

Inventor： Karl Nathan Edwards

IPC: G01R31/02 ,  H02H3/32 ,  G01R31/04 ,  H02H3/38 ,  H02H11/00 ,  H01H83/14 ,  H02H5/10

CPC classification number: G01R31/42 ,  G01R31/021 ,  G01R31/024 ,  G01R31/025 ,  G01R31/04 ,  G01R31/041 ,  H01H83/14 ,  H02H3/32 ,  H02H3/38 ,  H02H3/50 ,  H02H5/105 ,  H02H11/001 ,  H02H11/002 ,  H02H11/005

Abstract: A method for detecting predetermined fault conditions associated with the supply of AC electrical power to a consumer, the supply having an active conductor and a neutral conductor with the neutral conductor being connected to earth. The method comprises providing a first current detector associated with the active conductor, providing a second current detector associated with the neutral conductor; providing a voltage detector to detect voltage between the active conductor and the neutral conductor, and checking a current ratio of neutral current to active current whereby the current ratio is indicative of a predetermined fault condition. Also disclosed is a method of checking the condition of supply line active and neutral conductors in a consumer's supplied premises including determining the impedance of the active conductor and the impedance of the neutral conductor to indicate the condition of each of the active and neutral conductors.

Abstract translation: 用于检测与向消费者提供AC电力相关联的预定故障状况的方法，所述电源具有有源导体和中性导体，所述中性导体连接到地球。 该方法包括提供与有源导体相关联的第一电流检测器，提供与中性导体相关联的第二电流检测器; 提供电压检测器来检测有源导体和中性导体之间的电压，并且检查中性点电流与有功电流的电流比，由此电流比指示预定的故障状态。 还公开了一种检查消费者提供的场所中供电线有源和中性导体的状况的方法，包括确定有源导体的阻抗和中性导体的阻抗，以指示每个有源和中性导体的状态。

公开(公告)号：US20100102826A1

公开(公告)日：2010-04-29

申请号：US12312628

申请日：2007-11-23

Applicant: Karl Nathan Edwards

Inventor： Karl Nathan Edwards

IPC: G01R31/14

CPC classification number: G01R31/42 ,  G01R31/021 ,  G01R31/024 ,  G01R31/025 ,  G01R31/04 ,  G01R31/041 ,  H01H83/14 ,  H02H3/32 ,  H02H3/38 ,  H02H3/50 ,  H02H5/105 ,  H02H11/001 ,  H02H11/002 ,  H02H11/005

Abstract: A method for detecting predetermined fault conditions associated with the supply of AC electrical power to a consumer, the supply having an active conductor and a neutral conductor with the neutral conductor being connected to earth. The method comprises providing a first current detector associated with the active conductor, providing a second current detector associated with the neutral conductor; providing a voltage detector to detect voltage between the active conductor and the neutral conductor, and checking a current ratio of neutral current to active current whereby the current ratio is indicative of a predetermined fault condition. Also disclosed is a method of checking the condition of supply line active and neutral conductors in a consumer's supplied premises including determining the impedance of the active conductor and the impedance of the neutral conductor to indicate the condition of each of the active and neutral conductors.

Abstract translation: 用于检测与向消费者提供AC电力相关联的预定故障状况的方法，所述电源具有有源导体和中性导体，所述中性导体连接到地球。 该方法包括提供与有源导体相关联的第一电流检测器，提供与中性导体相关联的第二电流检测器; 提供电压检测器来检测有源导体和中性导体之间的电压，并且检查中性点电流与有功电流的电流比，由此电流比指示预定的故障状态。 还公开了一种检查消费者提供的场所中供电线有源和中性导体的状况的方法，包括确定有源导体的阻抗和中性导体的阻抗，以指示每个有源和中性导体的状态。