JP2012112947A - 電子電力量計の変流器の磁気シールド - Google Patents
電子電力量計の変流器の磁気シールド Download PDFInfo
- Publication number
- JP2012112947A JP2012112947A JP2011252144A JP2011252144A JP2012112947A JP 2012112947 A JP2012112947 A JP 2012112947A JP 2011252144 A JP2011252144 A JP 2011252144A JP 2011252144 A JP2011252144 A JP 2011252144A JP 2012112947 A JP2012112947 A JP 2012112947A
- Authority
- JP
- Japan
- Prior art keywords
- shield
- current transformer
- hour meter
- electronic watt
- electronic
- 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.)
- Pending
Links
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Regulation Of General Use Transformers (AREA)
Abstract
【解決手段】電子電力量計102に動作可能に結合される変流器104と変流器104の第1の側部に第1のシールド110と変流器の第2の側部に第2のシールド120を備え、第2の側部は第1の側部に実質的に平行であり、第1のシールド110および第2のシールド120は、実質的に透磁性かつ伝導性の金属をそれぞれ含んでいる。
【選択図】図5
Description
103 電子電力量計基部
104 変流器
105 サージサプレッサ
106 ポテンシャルリンク
107 変流器ケーブル
108 外部磁石
109 計測回路ブラケット
110、210、310 第1のシールド
111 第1の側部
112、212、312 縁部
113 厚さ
114、214、314 開口
115 外部磁石磁界
116 変流器磁界
117 変流器電流流れ
119 巻線
120 第2のシールド
121 第2の側部
122 ポテンシャルリンク電流流れ
128 第3のシールド
129 第3の側部
130 第3のシールド間隙
132 端部
216、316 間隙
218、318 側部
Claims (9)
- 電子電力量計(102)であって、
前記電子電力量計(102)に動作可能に結合される変流器(104)と、
前記変流器(104)の第1の側部(111)の第1のシールド(110)と、
前記変流器(104)の第2の側部(121)の第2のシールド(120)と
を備え、
前記第2の側部(121)が前記第1の側部(111)に実質的に平行であり、
前記第1のシールド(110)および前記第2のシールド(120)が、実質的に透磁性かつ伝導性の金属をそれぞれ含む、
電子電力量計(102)。 - 前記変流器(104)の第3の側部(129)の一部に第3のシールド(128)をさらに備え、前記第3のシールド(128)が、前記第1のシールド(110)および前記第2のシールド(120)に実質的に垂直であり、
前記第3のシールド(128)が実質的に透磁性かつ伝導性の金属を含む、
請求項1記載の電子電力量計(102)。 - 前記第3のシールド(128)が、実質的に曲線の平面形状を有する、請求項2記載の電子電力量計(102)。
- 前記第1のシールド(110)および前記第2のシールド(120)が、実質的にディスク形である、請求項1記載の電子電力量計(102)。
- 前記実質的に透磁性かつ伝導性の金属が、低炭素鋼を含む、請求項1記載の電子電力量計(102)。
- 前記低炭素鋼の炭素含有量が、約0.26%未満である、請求項5記載の電子電力量計(102)。
- 前記変流器(104)の形状が、実質的にトロイド状である、請求項1記載の電子電力量計(102)。
- 前記第1のシールド(110)および前記第2のシールド(120)のうちの一方が、前記第1のシールド(110)および前記第2のシールド(120)のうちの他方よりも厚い、請求項1記載の電子電力量計(102)。
- 前記第1のシールド(110)および前記第2のシールド(120)のうちの少なくとも一方が、実質的に、外部磁石(108)から約5000ガウスまで遮蔽する、請求項1記載の電子電力量計(102)。
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 |
US12/953,713 | 2010-11-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012112947A true JP2012112947A (ja) | 2012-06-14 |
JP2012112947A5 JP2012112947A5 (ja) | 2014-12-25 |
Family
ID=45062954
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011252144A Pending JP2012112947A (ja) | 2010-11-24 | 2011-11-18 | 電子電力量計の変流器の磁気シールド |
Country Status (5)
Country | Link |
---|---|
US (1) | US8664935B2 (ja) |
EP (1) | EP2458599B1 (ja) |
JP (1) | JP2012112947A (ja) |
CN (1) | CN102479609B (ja) |
ES (1) | ES2496416T3 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019505090A (ja) * | 2015-12-11 | 2019-02-21 | アモグリーンテック カンパニー リミテッド | 磁気遮蔽型変流器 |
Families Citing this family (3)
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 |
JP6132043B1 (ja) | 2016-02-23 | 2017-05-24 | オムロン株式会社 | 電力開閉装置 |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50125034U (ja) * | 1974-03-28 | 1975-10-14 | ||
JPS5946558A (ja) * | 1982-04-05 | 1984-03-15 | ハネウエル・インコ−ポレ−テツド | 電力計 |
JPH03134140A (ja) * | 1989-10-19 | 1991-06-07 | Sumitomo Metal Ind Ltd | 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 |
JPH1022149A (ja) * | 1996-06-28 | 1998-01-23 | Tokin Corp | 零相変流器 |
US5828282A (en) * | 1996-12-13 | 1998-10-27 | General Electric Company | Apparatus and method for shielding a toroidal current sensor |
JP2009085620A (ja) * | 2007-09-27 | 2009-04-23 | Panasonic Electric Works Co Ltd | 電流センサ |
WO2009139521A1 (en) * | 2008-05-13 | 2009-11-19 | Taehwatrans Co., Ltd. | Clamp type current sensor with rogowski coil |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US4295112A (en) | 1978-08-30 | 1981-10-13 | Mitsubishi Denki Kabushiki Kaisha | Residual current transformer |
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 |
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 |
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 |
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 |
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 |
-
2010
- 2010-11-24 US US12/953,713 patent/US8664935B2/en not_active Expired - Fee Related
-
2011
- 2011-11-16 ES ES11189418.4T patent/ES2496416T3/es active Active
- 2011-11-16 EP EP11189418.4A patent/EP2458599B1/en not_active Not-in-force
- 2011-11-18 JP JP2011252144A patent/JP2012112947A/ja active Pending
- 2011-11-24 CN CN201110414347.7A patent/CN102479609B/zh not_active Expired - Fee Related
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50125034U (ja) * | 1974-03-28 | 1975-10-14 | ||
JPS5946558A (ja) * | 1982-04-05 | 1984-03-15 | ハネウエル・インコ−ポレ−テツド | 電力計 |
US4504787A (en) * | 1982-04-05 | 1985-03-12 | Honeywell Inc. | Electronic watthour meter |
JPH03134140A (ja) * | 1989-10-19 | 1991-06-07 | Sumitomo Metal Ind Ltd | 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 |
JPH1022149A (ja) * | 1996-06-28 | 1998-01-23 | Tokin Corp | 零相変流器 |
US5828282A (en) * | 1996-12-13 | 1998-10-27 | General Electric Company | Apparatus and method for shielding a toroidal current sensor |
JP2009085620A (ja) * | 2007-09-27 | 2009-04-23 | Panasonic Electric Works Co Ltd | 電流センサ |
WO2009139521A1 (en) * | 2008-05-13 | 2009-11-19 | Taehwatrans Co., Ltd. | Clamp type current sensor with rogowski coil |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019505090A (ja) * | 2015-12-11 | 2019-02-21 | アモグリーンテック カンパニー リミテッド | 磁気遮蔽型変流器 |
US10600563B2 (en) | 2015-12-11 | 2020-03-24 | Amogreentech Co., Ltd. | Magnetic-shield-type converter |
JP2020191466A (ja) * | 2015-12-11 | 2020-11-26 | アモグリーンテック カンパニー リミテッド | 磁気遮蔽型変流器 |
JP7090928B2 (ja) | 2015-12-11 | 2022-06-27 | アモグリーンテック カンパニー リミテッド | 磁気遮蔽型変流器 |
Also Published As
Publication number | Publication date |
---|---|
EP2458599B1 (en) | 2014-07-23 |
EP2458599A1 (en) | 2012-05-30 |
CN102479609A (zh) | 2012-05-30 |
ES2496416T3 (es) | 2014-09-19 |
US8664935B2 (en) | 2014-03-04 |
CN102479609B (zh) | 2016-12-07 |
US20120126787A1 (en) | 2012-05-24 |
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