Title:
VACUUM INTERRUPTER AND METHOD FOR MONITORING STATE OF VACUUM INTERRUPTER
Document Type and Number:
WIPO Patent Application WO/2020/105245
Kind Code:
A9
Abstract:
Disclosed is a vacuum interrupter with which it is possible to determine the operating state at an early stage. This vacuum interrupter (156) is provided with: a vacuum valve; a manipulator for manipulating the opening and closing of the vacuum valve; a plurality of signal contacts, each of which opens and closes in response to the opening and closing of the vacuum valve; and a control device for controlling the opening and closing of the vacuum valve. The control device is provided with: an operating time measurement unit (220) that, on the basis of the opening and closing of the plurality of signal contacts (201-204), measures an input operating time required for the vacuum interrupter to make a transition from an interruption state to an input state and an interruption operating time required for the vacuum interrupter to make a transition from an input state to an interruption state; and a comparison unit (221) for determining an abnormality in the vacuum interrupter on the basis of a comparison between the input operating time and a reference input operating time and a comparison between the interruption operating time and a reference interruption operating time.
Inventors:
SATO TAKASHI (JP)
SATOU KAZUHIRO (JP)
SATOU SHINDAI (JP)
KOBAYASHI MASATO (JP)
YABU MASATO (JP)
SATOU KAZUHIRO (JP)
SATOU SHINDAI (JP)
KOBAYASHI MASATO (JP)
YABU MASATO (JP)
Application Number:
PCT/JP2019/034758
Publication Date:
June 24, 2021
Filing Date:
September 04, 2019
Export Citation:
Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
H01H33/668; H01H9/54; H01H33/66
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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