CN102479609B - 用于电子瓦时表中的电流互感器的磁屏蔽 - Google Patents

用于电子瓦时表中的电流互感器的磁屏蔽 Download PDF

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Publication number
CN102479609B
CN102479609B CN201110414347.7A CN201110414347A CN102479609B CN 102479609 B CN102479609 B CN 102479609B CN 201110414347 A CN201110414347 A CN 201110414347A CN 102479609 B CN102479609 B CN 102479609B
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CN
China
Prior art keywords
shielding
current transformer
hour meter
watt
electronics
Prior art date
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.)
Expired - Fee Related
Application number
CN201110414347.7A
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English (en)
Chinese (zh)
Other versions
CN102479609A (zh
Inventor
B·D·肖
D·W·因格拉姆
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General Electric Co
Original Assignee
General Electric Co
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.)
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Publication date
Application filed by General Electric Co filed Critical General Electric Co
Publication of CN102479609A publication Critical patent/CN102479609A/zh
Application granted granted Critical
Publication of CN102479609B publication Critical patent/CN102479609B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/366—Electric or magnetic shields or screens made of ferromagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F38/00—Adaptations of transformers or inductances for specific applications or functions
    • H01F38/20—Instruments transformers
    • H01F38/22—Instruments transformers for single phase AC
    • H01F38/28—Current transformers
    • H01F38/30—Constructions

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Regulation Of General Use Transformers (AREA)
CN201110414347.7A 2010-11-24 2011-11-24 用于电子瓦时表中的电流互感器的磁屏蔽 Expired - Fee Related CN102479609B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/953,713 US8664935B2 (en) 2010-11-24 2010-11-24 Magnetic shield for current transformer in electronic watt-hour meter
US12/953713 2010-11-24

Publications (2)

Publication Number Publication Date
CN102479609A CN102479609A (zh) 2012-05-30
CN102479609B true CN102479609B (zh) 2016-12-07

Family

ID=45062954

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201110414347.7A Expired - Fee Related CN102479609B (zh) 2010-11-24 2011-11-24 用于电子瓦时表中的电流互感器的磁屏蔽

Country Status (5)

Country Link
US (1) US8664935B2 (cg-RX-API-DMAC7.html)
EP (1) EP2458599B1 (cg-RX-API-DMAC7.html)
JP (1) JP2012112947A (cg-RX-API-DMAC7.html)
CN (1) CN102479609B (cg-RX-API-DMAC7.html)
ES (1) ES2496416T3 (cg-RX-API-DMAC7.html)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522068B (en) * 2014-01-14 2016-10-19 Thales Holdings Uk Plc Electric field screening
EP2996121A1 (en) 2014-09-09 2016-03-16 Core Elektronik Ticaret ve Sanayi Ltd. Sti. Improved current transformer shield for an electronic watt-hour meter
KR101966749B1 (ko) 2015-12-11 2019-04-08 주식회사 아모그린텍 자기차폐형 변류기
JP6132043B1 (ja) 2016-02-23 2017-05-24 オムロン株式会社 電力開閉装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828282A (en) * 1996-12-13 1998-10-27 General Electric Company Apparatus and method for shielding a toroidal current sensor
CN201497772U (zh) * 2009-05-31 2010-06-02 潘兴华 用于仪表计量的*型电流传感器结构

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GB542861A (en) 1940-12-02 1942-01-29 Ferranti Ltd Improvements in or relating to electrical highly-inductive apparatus such as power transformers and chokes
GB846362A (en) 1958-05-24 1960-08-31 Cornigliano Societa Per Azioni Improvements in or relating to thin ferro-magnetic sheet of low coercive force and high permeability
US3366907A (en) 1965-10-22 1968-01-30 Westinghouse Electric Corp Core-form transformer pressure ring wound from magnetic material
DE2348397B2 (de) 1973-09-24 1979-01-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Induktiver Spannungswandler
JPS50125034U (cg-RX-API-DMAC7.html) * 1974-03-28 1975-10-14
US4295112A (en) 1978-08-30 1981-10-13 Mitsubishi Denki Kabushiki Kaisha Residual current transformer
US4504787A (en) * 1982-04-05 1985-03-12 Honeywell Inc. Electronic watthour meter
US4760333A (en) 1984-12-13 1988-07-26 Kanto Seiki Co., Ltd. Crossed coil meter having concentrically wound magnetic shield
US4646045A (en) 1985-03-25 1987-02-24 General Electric Company Aperture sized disc shaped end caps of a ferromagnetic shield for magnetic resonance magnets
JPH0611903B2 (ja) * 1989-10-19 1994-02-16 住友金属工業株式会社 磁気シールド用電磁鋼板およびその製造方法
US5079462A (en) 1990-02-27 1992-01-07 Sundstrand Corporation Brushless electrical power generator with reduced harmonics
FR2687477B1 (fr) 1992-02-14 1996-06-07 Abb Petercem Capteur de courant.
JPH06302451A (ja) 1993-04-15 1994-10-28 Seiko Epson Corp 希土類永久磁石の製造方法
US5853300A (en) * 1994-03-22 1998-12-29 Ekstrom Industries, Inc. Watthour socket adapter with improved electrical connections
US5486755A (en) 1994-12-27 1996-01-23 General Electric Company Electronic meter having anti-tampering magnetic shield
JPH1022149A (ja) * 1996-06-28 1998-01-23 Tokin Corp 零相変流器
US5926014A (en) 1997-03-17 1999-07-20 General Electric Company Magnetic shield for plastic molded electricity meter frames
DE10003638A1 (de) * 2000-01-28 2001-08-09 Vacuumschmelze Gmbh Kompensationsstromsensor
US6605937B2 (en) 2001-06-01 2003-08-12 General Electric Company Modular meter with base barrier
US7267729B2 (en) 2003-12-18 2007-09-11 Kobe Steel, Ltd. Soft magnetic low-carbon steel excellent in machinability and magnetic characteristic, method of manufacturing the same and method of manufacturing soft magnetic low-carbon part
DE202004000642U1 (de) 2004-01-16 2004-03-18 Vogt Electronic Aktiengesellschaft Abgeschirmte Induktivität
US7265532B2 (en) 2004-06-02 2007-09-04 General Electric Company Electronic electricity meter and method of assembly
JP5069978B2 (ja) * 2007-08-31 2012-11-07 株式会社ダイヘン 電流・電圧検出用プリント基板および電流・電圧検出器
JP4965402B2 (ja) * 2007-09-27 2012-07-04 パナソニック株式会社 電流センサ
KR100965818B1 (ko) * 2008-05-13 2010-06-24 태화트랜스 주식회사 로고스키코일을 구비하는 분할클램프식 전류센서
JP5332374B2 (ja) * 2008-07-25 2013-11-06 サンケン電気株式会社 半導体装置
US8401469B2 (en) 2008-09-26 2013-03-19 Hewlett-Packard Development Company, L.P. Shield for use with a computing device that receives an inductive signal transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5828282A (en) * 1996-12-13 1998-10-27 General Electric Company Apparatus and method for shielding a toroidal current sensor
CN201497772U (zh) * 2009-05-31 2010-06-02 潘兴华 用于仪表计量的*型电流传感器结构

Also Published As

Publication number Publication date
ES2496416T3 (es) 2014-09-19
US20120126787A1 (en) 2012-05-24
EP2458599A1 (en) 2012-05-30
JP2012112947A (ja) 2012-06-14
EP2458599B1 (en) 2014-07-23
US8664935B2 (en) 2014-03-04
CN102479609A (zh) 2012-05-30

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Granted publication date: 20161207

Termination date: 20181124

CF01 Termination of patent right due to non-payment of annual fee