VACUUM CIRCUIT BREAKER SYSTEM AND ABNORMALITY DIAGNOSIS METHOD FOR VACUUM CIRCUIT BREAKER

WIPO Patent Application WO/2020/136931

A1

The present invention provides a vacuum circuit breaker system for measuring the capacitance of a power supply capacitor that supplies power to a vacuum circuit breaker in a relatively short time. This vacuum circuit breaker system is characterized by comprising: a vacuum circuit breaker comprising a power supply capacitor, an electromagnet that is driven by the power supply capacitor, and a voltage sensor that measures the voltage of the power supply capacitor; and a state monitoring device comprising an operating time measurement unit that measures the capacitor charging time of the power supply capacitor on the basis of the voltage of the power supply capacitor, which has been measured by the voltage sensor, and a comparison unit that compares the capacitor charging time of the power supply capacitor, which has been measured by the operating time measurement unit, and the initial capacitor charging time of the power supply capacitor, which has been previously measured, and determines the presence or absence of abnormality of the power supply capacitor.

GOTOH KENGO (JP)
SATO TAKASHI (JP)
SATOU KAZUHIRO (JP)
SATOU SHINDAI (JP)
YABU MASATO (JP)

PCT/JP2019/017239

July 02, 2020

April 23, 2019

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HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

H01H33/666; G01R31/00; H01H33/00; H02B3/00

WO2010150599A1

2010-12-29

JP2007202298A	2007-08-09
JP2002098725A	2002-04-05
JPH0829465A	1996-02-02
JP2018147642A	2018-09-20
JP2010272296A	2010-12-02

POLAIRE I.P.C. (JP)

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