SG72746A1 - Earth leakage-current protection device - Google Patents

Earth leakage-current protection device

Info

Publication number
SG72746A1
SG72746A1 SG1997002472A SG1997002472A SG72746A1 SG 72746 A1 SG72746 A1 SG 72746A1 SG 1997002472 A SG1997002472 A SG 1997002472A SG 1997002472 A SG1997002472 A SG 1997002472A SG 72746 A1 SG72746 A1 SG 72746A1
Authority
SG
Singapore
Prior art keywords
protection device
earth leakage
current protection
leakage
earth
Prior art date
Application number
SG1997002472A
Inventor
Eietu Satou
Yukihide Yamada
Kouichi Yokoyama
Kazuya Aihara
Toshihiro Sekiguchi
Hidetaka Fujita
Makio Watanabe
Original Assignee
Hitachi Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=16302039&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=SG72746(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Publication of SG72746A1 publication Critical patent/SG72746A1/en

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
    • H02H3/33—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 using summation current transformers
SG1997002472A 1996-07-23 1997-07-16 Earth leakage-current protection device SG72746A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19308896A JP3452445B2 (en) 1996-07-23 1996-07-23 Earth leakage breaker

Publications (1)

Publication Number Publication Date
SG72746A1 true SG72746A1 (en) 2000-05-23

Family

ID=16302039

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1997002472A SG72746A1 (en) 1996-07-23 1997-07-16 Earth leakage-current protection device

Country Status (4)

Country Link
JP (1) JP3452445B2 (en)
CN (1) CN1057645C (en)
FR (1) FR2751800B1 (en)
SG (1) SG72746A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100349345C (en) * 2006-02-21 2007-11-14 通领科技集团有限公司 Intelligent detecting method and appliance for service stop of electricity leakage protector
WO2009014143A1 (en) * 2007-07-24 2009-01-29 Panasonic Electric Works Co., Ltd. Charge monitoring device
US7911754B2 (en) * 2008-01-21 2011-03-22 Biosense Webster, Inc. Detection of current leakage through opto-switches
JP5119063B2 (en) 2008-07-02 2013-01-16 パナソニック株式会社 Wiring equipment with leakage detection function
CN103066554B (en) * 2012-12-12 2015-02-25 常州联力自动化科技有限公司 Single-phase source leakage detection circuit for isolated neutral system
CN104953550B (en) * 2015-05-19 2018-12-14 中国核电工程有限公司 A kind of earth leakage protective device of motor
WO2017108134A1 (en) * 2015-12-23 2017-06-29 Huawei Technologies Co., Ltd. Circuit for detecting electrical shock hazard
CN110632442B (en) * 2019-10-10 2021-11-23 华东光电集成器件研究所 Capacitor aging leakage detection power-off protection circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1017723B (en) * 1989-04-11 1992-08-05 中国农业科学院植物保护研究所 Mixed powders of cytokinin and production process thereof

Also Published As

Publication number Publication date
FR2751800B1 (en) 2001-10-12
CN1174436A (en) 1998-02-25
FR2751800A1 (en) 1998-01-30
JPH1042457A (en) 1998-02-13
CN1057645C (en) 2000-10-18
JP3452445B2 (en) 2003-09-29

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