A ground fault detection apparatus includes a detection capacitor, termination resistors on positive- and negative-electrode sides, bypass resistors on positive- and negative-electrode sides, a bypass twin relay, twin relays on positive- and negative-electrode sides, and a control unit configured to compare a first full-charge voltage obtained with the positive-electrode-side twin relay in a first state, the negative-electrode-side twin relay in a second state and the bypass twin relay in a first state, with a second full-charge voltage obtained with the positive-electrode-side twin relay in a second state, the negative-electrode-side twin relay in a first state and the bypass twin relay in the first state, and determines that negative-electrode-side insulation resistance is lowered when the second full-charge voltage is smaller and when degree of the smallness is great.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Ground fault detection apparatus


    Beteiligte:

    Erscheinungsdatum :

    15.09.2020


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



    GROUND FAULT DETECTION APPARATUS

    ARIMURA MICHIO | Europäisches Patentamt | 2025

    Freier Zugriff

    GROUND FAULT DETECTION APPARATUS

    KAWAMURA YOSHIHIRO | Europäisches Patentamt | 2019

    Freier Zugriff

    Ground fault detection apparatus

    KAWAMURA YOSHIHIRO | Europäisches Patentamt | 2020

    Freier Zugriff

    GROUND FAULT DETECTION APPARATUS

    KAWAMURA YOSHIHIRO | Europäisches Patentamt | 2019

    Freier Zugriff

    Ground fault detection apparatus

    KAWAMURA YOSHIHIRO | Europäisches Patentamt | 2020

    Freier Zugriff