公开(公告)号：US20160377670A1

公开(公告)日：2016-12-29

申请号：US14902434

申请日：2014-10-28

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Taichiro TAMIDA ,  Masayuki UEMATSU ,  Akira TANABE ,  Yoshitomo HAYASHI ,  Yoji TSUTSUMISHITA ,  Kosuke TSUJIKAWA

IPC: G01R31/12 ,  G01R31/02

CPC classification number: G01R31/12 ,  G01R27/025 ,  G01R27/18 ,  G01R31/02 ,  G01R31/025 ,  G01R31/34 ,  G01R31/343

Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor. A capacitance value of the intra-insulation detector capacitor is a value negligible in the measurement of the insulation resistance compared with a capacitance value of the intra-apparatus capacitor.

Abstract translation: 一种绝缘检测器，用于以简单的结构高精度地检测或测量负载或设备对地面或壳体的绝缘电阻并连接到包括设备内电容器和电池中的一个或两者的电气设备， 绝缘检测电容器，检测绝缘内检测电容器的电压的电压检测单元，以及用于连接地面或壳体的电流通路形成开关，装置内电容器和内部 - 绝缘检测器电容器串联并形成包括电气设备的绝缘电阻的电流路径。 绝缘检测器通过测量绝缘检测电容器的电压变化的时间常数来测量绝缘电阻。 与设备内电容器的电容值相比，绝缘检测电容器的电容值在绝缘电阻的测量中是可忽略的值。

公开(公告)号：US20180340971A1

公开(公告)日：2018-11-29

申请号：US16056600

申请日：2018-08-07

Applicant: Mitsubishi Electric Corporation

Inventor： Taichiro TAMIDA ,  Masayuki UEMATSU ,  Akira TANABE ,  Yoshitomo HAYASHI ,  Yoji TSUTSUMISHITA ,  Kosuke TSUJIKAWA

IPC: G01R31/12 ,  G01R31/02

Abstract: An insulation detector for highly accurately detecting or measuring, with a simple configuration, insulation resistance of a load or an apparatus to a ground or a housing and connected to an electric apparatus including one or both of an intra-apparatus capacitor and a battery, the insulation detector including an intra-insulation detector capacitor, a voltage detecting unit that detects a voltage of the intra-insulation detector capacitor, and a current-path forming switch for connecting the ground or the housing, the intra-apparatus capacitor, and the intra-insulation detector capacitor in series and forming a current path including insulation resistance of the electric apparatus. The insulation detector measures the insulation resistance by measuring a time constant of a change in the voltage of the intra-insulation detector capacitor. A capacitance value of the intra-insulation detector capacitor is a value negligible in the measurement of the insulation resistance compared with a capacitance value of the intra-apparatus capacitor.