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    • 82. 发明专利
    • Device and method for detection of circuit fault
    • 用于检测电路故障的装置和方法
    • JP2011141163A
    • 2011-07-21
    • JP2010001319
    • 2010-01-06
    • Yamatake Corp株式会社山武
    • ISHII SHIGEKIYAMAGISHI SATORU
    • G01R31/02H02H3/00
    • H02H3/162F24D13/02F24D19/1096G01R31/025Y02B30/26
    • PROBLEM TO BE SOLVED: To provide a device and method for detection of a circuit fault, capable of accurately detecting insulation failure of a load circuit. SOLUTION: A detector 11 is connected between power supply lines L1 and L2 and an electric heater (load circuit) 20 to detect a detection voltage Vd (detection value) according to the magnitude of a leakage current Id flowing through the power supply lines L1 and L2 and the electric heater 20 via the ground GND. A determiner 12 determines the presence or absence of insulation degradation of the electric heater 20 to the ground GND on the basis of a detection value acquired when relay contacts 21 and 22 are opened. COPYRIGHT: (C)2011,JPO&INPIT
    • 要解决的问题:提供一种用于检测电路故障的装置和方法,能够精确地检测负载电路的绝缘故障。 解决方案:检测器11连接在电源线L1和L2与电加热器(负载电路)20之间,以根据流过电源的漏电流Id的大小来检测检测电压Vd(检测值) 线路L1和L2以及电加热器20经由地GND。 确定器12基于当继电器触点21和22被打开时获取的检测值来确定电加热器20到地GND的绝缘劣化的存在或不存在。 版权所有(C)2011,JPO&INPIT
    • 90. 发明专利
    • Earth leakage breaker and image forming apparatus
    • 地震泄漏断路器和图像形成装置
    • JP2014107238A
    • 2014-06-09
    • JP2012261560
    • 2012-11-29
    • Kyocera Document Solutions Inc京セラドキュメントソリューションズ株式会社
    • SUEISHI NAOKI
    • H01H83/02G03G21/00
    • H02H3/162G03G15/55H02H1/06H02H3/33H02M7/06H02M2001/0006H02M2001/0048Y02B70/1491
    • PROBLEM TO BE SOLVED: To achieve power saving and secure safety of an earth leakage breaker provided to an electronic apparatus such as an image forming apparatus.SOLUTION: An earth leakage breaker 2 includes: a switching unit 21 that is provided on an electrical circuit between an AC power source 30 and a rectification unit 23 to switch supply and break of a power from the AC power source 30; the rectification unit 23 that rectifies the power from the AC power source 30 to be converted into a DC power; a leakage detection unit 24 that is provided between the AC power source 30 and a load 50; and a control unit 25 that causes the rectification unit 23 to perform half-wave rectification until the leakage detection unit 24 detects leakage, and causes the rectification unit 23 to perform full-wave rectification when the leakage detection unit 24 has detected leakage.
    • 要解决的问题:为了实现对设置在诸如图像形成装置之类的电子装置的漏电断路器的省电和安全的保护。解决方案:漏电断路器2包括:开关单元21,设置在电路之间, 交流电源30和整流单元23,用于切换来自AC电源30的电力供应和断开; 整流单元23,将来自交流电源30的电力整流为直流电; 设置在交流电源30和负载50之间的泄漏检测单元24; 以及控制单元25,其使整流单元23进行半波整流,直到泄漏检测单元24检测到泄漏,并且在泄漏检测单元24检测到泄漏时使整流单元23进行全波整流。