Title:
DC INSULATION RESISTANCE MONITORING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2024/079922
Kind Code:
A1
Abstract:
The present invention comprises: an insulation capacitor that is opened and closed by the neutral-point switch of a transformer for a ground-type gauge; a DC power supply that charges the insulation capacitor; a DC power supply switch that opens and closes the connection between the DC power supply and the insulation capacitor; an open/close control unit that controls the open/close state of each of the neutral-point switch and the DC power supply switch; and a voltage measurement unit that measures the voltage signal of the insulation capacitor.
Inventors:
SATO TAKASHI (JP)
ISHIZAKI SHINICHI (JP)
SATOU SHINDAI (JP)
WATANABE YOSHIYASU (JP)
ISHIZAKI SHINICHI (JP)
SATOU SHINDAI (JP)
WATANABE YOSHIYASU (JP)
Application Number:
PCT/JP2023/007584
Publication Date:
April 18, 2024
Filing Date:
March 01, 2023
Export Citation:
Assignee:
HITACHI IND EQUIPMENT SYSTEMS CO LTD (JP)
International Classes:
G01R31/52; G01R27/02; H02H3/00
Attorney, Agent or Firm:
SEIRYO I.P.C. (JP)
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