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    • 5. 发明专利
    • Opening and closing very time measuring device of power switchgear
    • JP5306144B2
    • 2013-10-02
    • JP2009247681
    • 2009-10-28
    • 三菱電機株式会社
    • 広幸 蔦田一 仲嶋和彦 鷲見
    • H01H33/00G04F10/00H01H9/54H02B3/00H02B13/065
    • PROBLEM TO BE SOLVED: To provide a device for measuring electrode opening/closing time for accurately measuring the electrode opening time and electrode closing time of a power switchgear. SOLUTION: A magnetic sensor 102 sends a magnetic sensor output signal Ss1 indicating the position of a movable contact 203 relative to the axial direction of a contact-side movable shaft 204 of the power switchgear 200 opening and closing power using a fixed contact 202 and the movable contact 203 to the power switchgear 200, a sensor signal measuring unit 103 measures and stores the magnetic sensor output signal Ss1 as a time sequential signal Ssq1 with the input time of a measurement control command signal Sc as a starting point, and an electrode opening/closing time measuring unit 104 detects a time at which an electrode opening point or an electrode closing point of the power switchgear 200 is reached by detecting an inflection point or peak point appearing in the time sequential signal Ssq1 at the electrode opening point or electrode closing point, and measures the electrode opening time from the starting point to a time when the electrode opening point is reached, or the electrode closing time from the starting point to a time when the electrode closing point is reached. COPYRIGHT: (C)2011,JPO&INPIT