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
Authority
CN
China
Prior art keywords
shield
shielding
current transformer
hour meter
watt
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
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
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.)
Filing date
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 (https=)
EP (1) EP2458599B1 (https=)
JP (1) JP2012112947A (https=)
CN (1) CN102479609B (https=)
ES (1) ES2496416T3 (https=)

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

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SE01 Entry into force of request for substantive examination
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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
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Granted publication date: 20161207

Termination date: 20181124