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
Other languages
English (en)
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Breakers (AREA)
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 (ja) 1996-07-23 1996-07-23 漏電遮断器

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 (ja)
CN (1) CN1057645C (ja)
FR (1) FR2751800B1 (ja)
SG (1) SG72746A1 (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100349345C (zh) * 2006-02-21 2007-11-14 通领科技集团有限公司 漏电保护装置寿命终止智能检测方法及其设备
AU2008280932B8 (en) * 2007-07-24 2011-02-24 Panasonic Electric Works Co., Ltd. Charging monitor
US7911754B2 (en) * 2008-01-21 2011-03-22 Biosense Webster, Inc. Detection of current leakage through opto-switches
JP5119063B2 (ja) 2008-07-02 2013-01-16 パナソニック株式会社 漏電検出機能付配線器具
CN103066554B (zh) * 2012-12-12 2015-02-25 常州联力自动化科技有限公司 中性点不接地系统单相电源漏电检测电路
CN104953550B (zh) * 2015-05-19 2018-12-14 中国核电工程有限公司 一种电机的漏电保护装置
WO2017108134A1 (en) * 2015-12-23 2017-06-29 Huawei Technologies Co., Ltd. Circuit for detecting electrical shock hazard
CN110632442B (zh) * 2019-10-10 2021-11-23 华东光电集成器件研究所 一种电容老化漏电检测断电保护电路

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1017723B (zh) * 1989-04-11 1992-08-05 中国农业科学院植物保护研究所 细胞分裂素混合粉剂及其制造方法

Also Published As

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

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