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    • 3. 发明授权
    • Insulation measurement apparatus
    • 绝缘测量装置
    • US08760172B2
    • 2014-06-24
    • US13315684
    • 2011-12-09
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • G01R31/02
    • G01R27/025G01R31/086G01R31/1272Y04S10/522
    • An insulation measurement apparatus includes a path including a first resistor, a capacitor electrically floated from a ground, and a second resistor between a positive to a negative electrode side of a power supply, a first switching element between the power supply positive electrode side and the capacitor, a second switching element between the capacitor and the power supply negative electrode side, a detection section detecting a charge voltage on the capacitor and determining a power supply insulation state, and a voltage setting section executing a power supply voltage measurement mode controlling the first and second switching elements to charge the capacitor for a predetermined time period, and an insulation voltage measurement mode charging a terminal of a positive or negative electrode side of the capacitor via a resistor between the power supply positive or negative electrode and the ground for a predetermined time period.
    • 一种绝缘测量装置,包括:路径,包括第一电阻器,从地面电浮置的电容器,以及在电源的正极侧和负极侧之间的第二电阻器;电源正极侧和第二电阻器之间的第一开关元件; 电容器,电容器和电源负极侧之间的第二开关元件,检测电容器上的充电电压并确定电源绝缘状态的检测部分,以及执行电源电压测量模式的电压设定部分,控制第一 以及第二开关元件,用于对电容器充电预定时间段,以及绝缘电压测量模式,通过电源正极或负极与地之间的电阻将电容器的正极或负极侧的端子充电至预定的 时间段。
    • 5. 发明授权
    • Insulation measurement apparatus
    • 绝缘测量装置
    • US08106667B2
    • 2012-01-31
    • US12470170
    • 2009-05-21
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • G01R31/02H01H31/12
    • G01R27/025G01R31/086G01R31/1272Y04S10/522
    • An insulation measurement apparatus includes a path including a first resistor, a capacitor electrically floated from a ground, and a second resistor between a positive to a negative electrode side of a power supply, a first switching element between the power supply positive electrode side and the capacitor, a second switching element between the capacitor and the power supply negative electrode side, a detection section detecting a charge voltage on the capacitor and determining a power supply insulation state, and a voltage setting section executing a power supply voltage measurement mode controlling the first and second switching elements to charge the capacitor for a predetermined time period, and an insulation voltage measurement mode charging a terminal of a positive or negative electrode side of the capacitor via a resistor between the power supply positive or negative electrode and the ground for a predetermined time period.
    • 一种绝缘测量装置,包括:路径,包括第一电阻器,从地面电浮置的电容器,以及在电源的正极侧和负极侧之间的第二电阻器;电源正极侧和第二电阻器之间的第一开关元件; 电容器,电容器和电源负极侧之间的第二开关元件,检测电容器上的充电电压并确定电源绝缘状态的检测部分,以及执行电源电压测量模式的电压设定部分,控制第一 以及第二开关元件,用于对电容器充电预定时间段,以及绝缘电压测量模式,通过电源正极或负极与地之间的电阻将电容器的正极或负极侧的端子充电至预定的 时间段。
    • 6. 发明授权
    • Ground fault detection device
    • 接地故障检测装置
    • US06992490B2
    • 2006-01-31
    • US10831829
    • 2004-04-26
    • Yoshikazu NomotoTakafumi TsurumiToshiaki AriyoshiMitsuteru Yano
    • Yoshikazu NomotoTakafumi TsurumiToshiaki AriyoshiMitsuteru Yano
    • G01R31/02
    • B60L3/0023B60L3/0069G01R31/024G01R31/36
    • A control section sets a positive side switching element of a positive side detection section and a negative side switching element of a negative side detection section to ON, thus outputting an ON signal. When the switching elements are set ON, a predetermined current outputted from a positive side constant current source and a negative side constant current source, or a portion of this current, flows through detection resistors. A ground fault decision section decides whether a ground fault has occurred in the positive or the negative side of a direct current power source, based upon the value of an output voltage detected by a positive side voltage detector, or upon the value of an output voltage detected by a negative side voltage detector. Ground faults are accurately detected with a simple structure.
    • 控制部将正侧检测部的正侧开关元件和负侧检测部的负侧开关元件设定为ON,从而输出ON信号。 当开关元件设置为ON时,从正侧恒流源和负侧恒流源输出的预定电流或该电流的一部分流过检测电阻器。 接地故障判定部基于正侧电压检测器检测到的输出电压的值,或根据输出电压的值来判定直流电源的正极侧或负极侧是否发生接地故障 由负侧电压检测器检测。 以简单的结构准确地检测到接地故障。
    • 7. 发明申请
    • INSULATION MEASUREMENT APPARATUS
    • 绝缘测量装置
    • US20090289640A1
    • 2009-11-26
    • US12470170
    • 2009-05-21
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • Yoshihiro KawamuraTakafumi TsurumiShintaro Uchida
    • G01R27/26G01R27/08
    • G01R27/025G01R31/086G01R31/1272Y04S10/522
    • An insulation measurement apparatus includes a path including a first resistor, a capacitor in a state electrically floated from a ground potential, and a second resistor coupled in series sequentially from a positive electrode side of a power supply to a negative electrode side of the power supply, a first switching element provided in a path from the positive electrode side of the power supply to the capacitor, a second switching element provided in a path from the capacitor to the negative electrode side of the power supply, a detection section which detects a charge voltage set to the capacitor and determines an insulation state of the power supply, and a voltage setting section which executes a power supply voltage measurement mode for controlling the first and second switching elements to charge the capacitor by a voltage of the power supply for a predetermined voltage applying time period for measuring the voltage of the power supply, and an insulation voltage measurement mode for charging a terminal of a positive electrode side or a negative electrode side of the capacitor via a resistor between the positive electrode or the negative electrode of the power supply and the ground potential for a predetermined voltage applying time period for measuring a voltage of the insulation resistor.
    • 一种绝缘测量装置,包括:路径,包括第一电阻器,处于从接地电位浮置的状态的电容器,以及从电源的正极侧到电源的负极侧依次串联的第二电阻器 设置在从电源的正极侧向电容器的路径的第一开关元件,设置在从电容器向电源的负极侧的路径的第二开关元件,检测部,其检测电荷 电压设定到电容器并确定电源的绝缘状态;以及电压设定部,其执行用于控制第一和第二开关元件的电源电压测量模式,以通过电源的电压对电容器充电预定的 用于测量电源电压的电压施加时间段和绝缘电压测量模式f 或者通过电源的正极或负极之间的电阻将电容器的正极侧或负极侧的端子充电至用于测量绝缘电压的预定电压施加时间段的接地电位 电阻。