JPS5139348B1 - - Google Patents

Info

Publication number
JPS5139348B1
JPS5139348B1 JP45109866A JP10986670A JPS5139348B1 JP S5139348 B1 JPS5139348 B1 JP S5139348B1 JP 45109866 A JP45109866 A JP 45109866A JP 10986670 A JP10986670 A JP 10986670A JP S5139348 B1 JPS5139348 B1 JP S5139348B1
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP45109866A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP45109866A priority Critical patent/JPS5139348B1/ja
Priority to US00203704A priority patent/US3745375A/en
Publication of JPS5139348B1 publication Critical patent/JPS5139348B1/ja
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
    • H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
    • H02H3/34—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors of a three-phase system

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Measurement Of Current Or Voltage (AREA)
JP45109866A 1970-12-09 1970-12-09 Pending JPS5139348B1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP45109866A JPS5139348B1 (ja) 1970-12-09 1970-12-09
US00203704A US3745375A (en) 1970-12-09 1971-12-01 Phase unbalance or open-phase detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45109866A JPS5139348B1 (ja) 1970-12-09 1970-12-09

Publications (1)

Publication Number Publication Date
JPS5139348B1 true JPS5139348B1 (ja) 1976-10-27

Family

ID=14521168

Family Applications (1)

Application Number Title Priority Date Filing Date
JP45109866A Pending JPS5139348B1 (ja) 1970-12-09 1970-12-09

Country Status (2)

Country Link
US (1) US3745375A (ja)
JP (1) JPS5139348B1 (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5283127A (en) * 1975-12-31 1977-07-11 Fujitsu Ltd Instantaneous power cut detecting circuit
US4333119A (en) * 1980-04-28 1982-06-01 Purex Corporation Power monitor system
US4600961A (en) * 1983-09-01 1986-07-15 Westinghouse Electric Corp. Protective relay apparatus for detecting high-impedance ground faults
US4775924A (en) * 1987-02-27 1988-10-04 Asea Power Systems, Inc. Inverter commutation failure prevention method and apparatus
KR980004898A (ko) * 1996-06-29 1998-03-30 김광호 비디오 테이프의 잔량검출방법
US6436116B1 (en) * 1997-10-06 2002-08-20 Smith & Nephew, Inc. Methods and apparatus for removing veins
US6602203B2 (en) * 2000-10-13 2003-08-05 Ethicon Endo-Surgery, Inc. Remote thumbwheel for a surgical biopsy device
JP4300571B2 (ja) * 2003-07-30 2009-07-22 株式会社安川電機 ３相コンバータの電源欠相検出方法
KR101769649B1 (ko) * 2013-09-02 2017-08-18 엘에스산전 주식회사 인버터 시스템에서 전력 케이블의 상태 검출 방법
FR3026489B1 (fr) * 2014-09-29 2016-12-09 Schneider Electric Ind Sas Procede d'estimation d'une tension et dispositif permettant une telle estimation

Also Published As

Publication number Publication date
US3745375A (en) 1973-07-10

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