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GB825137A - Improvements in or relating to an electrical current measuring apparatus - Google Patents

Improvements in or relating to an electrical current measuring apparatus

Info

Publication number
GB825137A
GB825137A GB22007/56A GB2200756A GB825137A GB 825137 A GB825137 A GB 825137A GB 22007/56 A GB22007/56 A GB 22007/56A GB 2200756 A GB2200756 A GB 2200756A GB 825137 A GB825137 A GB 825137A
Authority
GB
United Kingdom
Prior art keywords
current
conductor
july
measuring apparatus
magnetic field
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
Application number
GB22007/56A
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.)
Siemens Schuckertwerke AG
Siemens Corp
Original Assignee
Siemens Schuckertwerke AG
Siemens Corp
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 Siemens Schuckertwerke AG, Siemens Corp filed Critical Siemens Schuckertwerke AG
Publication of GB825137A publication Critical patent/GB825137A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

825,137. Current measurement. SIEMENSSCHUCKERTWERKE A.G. July 16, 1956 [July 14, 1955], No. 22007/56. Addition to 759,047 and modified by 767,542. Class 37. Current measuring apparatus utilizing semiconductor members exhibiting Hall effect in response to a magnetic field developed by the current as in the parent Specification, comprises a magnetic circuit 3, 4 (Figs. 1a, 1b) of material having a linear magnetization characteristic curve surrounding a conductor 5 carrying the current, with at least two air gaps and disposed therein semi-conducting Hall plates 1, 2 of an AIII, Bv compound as defined in the above Specification. The latter are traversed by the field in the magnetic circuit proportional to the conductor current and by stabilized constant auxiliary direct currents I s1 , I s2 in a direction normal thereto, while direct measurement voltages U h1 , U h2 appear across electrodes whose axes are normal to the axes of the magnetic field and the auxiliary current feed plate, which are screened across load resistors 9, 10 for application to a measuring instrument (not shown) indicating the current in conductor 5. The apparatus is stated to be free from errors due to stray fields from neighbouring current conductors.
GB22007/56A 1955-07-14 1956-07-16 Improvements in or relating to an electrical current measuring apparatus Expired GB825137A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE825137X 1955-07-14

Publications (1)

Publication Number Publication Date
GB825137A true GB825137A (en) 1959-12-09

Family

ID=6747455

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22007/56A Expired GB825137A (en) 1955-07-14 1956-07-16 Improvements in or relating to an electrical current measuring apparatus

Country Status (1)

Country Link
GB (1) GB825137A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5041780A (en) * 1988-09-13 1991-08-20 California Institute Of Technology Integrable current sensors
EP1752776A1 (en) * 2005-08-12 2007-02-14 Liaisons Electroniques-Mecaniques Lem S.A. Three phase current sensor
WO2014025265A1 (en) * 2012-08-07 2014-02-13 Hts-110 Limited Improved magnetic field control
EP2860535A1 (en) * 2013-10-02 2015-04-15 Rockwell Automation Technologies, Inc. Hall effect sensor core with multiple air gaps
WO2018100399A1 (en) * 2016-12-02 2018-06-07 Cambridge Medical Robotics Limited Sensing motor current
CN108594114A (en) * 2018-05-25 2018-09-28 明阳智慧能源集团股份公司 A kind of large size half-direct-drive wind driven generator shaft current measurement sensor
CN112462125A (en) * 2020-11-14 2021-03-09 武汉启亦电气有限公司 Clamp-on ammeter with double breath
EP4124869A1 (en) * 2021-07-31 2023-02-01 LEM International SA Current transducer

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5041780A (en) * 1988-09-13 1991-08-20 California Institute Of Technology Integrable current sensors
EP1752776A1 (en) * 2005-08-12 2007-02-14 Liaisons Electroniques-Mecaniques Lem S.A. Three phase current sensor
WO2007020500A1 (en) * 2005-08-12 2007-02-22 Liaisons Electroniques-Mecaniques Lem S.A. Three-phase current sensor
US7821252B2 (en) 2005-08-12 2010-10-26 Liasons Electroniques-Mecaniques Lem SA Three-phase current sensor
CN101238378B (en) * 2005-08-12 2011-11-30 机电联合股份有限公司 Three-phase current sensor
US9666343B2 (en) 2012-08-07 2017-05-30 Hts-110 Limited Magnetic field control
WO2014025265A1 (en) * 2012-08-07 2014-02-13 Hts-110 Limited Improved magnetic field control
EP2860535A1 (en) * 2013-10-02 2015-04-15 Rockwell Automation Technologies, Inc. Hall effect sensor core with multiple air gaps
US9285437B2 (en) 2013-10-02 2016-03-15 Rockwell Automation Technologies, Inc. Hall effect sensor core with multiple air gaps
WO2018100399A1 (en) * 2016-12-02 2018-06-07 Cambridge Medical Robotics Limited Sensing motor current
US11353481B2 (en) 2016-12-02 2022-06-07 Cmr Surgical Limited Sensing motor current
US11747368B2 (en) 2016-12-02 2023-09-05 Cmr Surgical Limited Sensing motor current
US10976353B2 (en) 2016-12-02 2021-04-13 Cmr Surgical Limited Sensing motor current
CN108594114A (en) * 2018-05-25 2018-09-28 明阳智慧能源集团股份公司 A kind of large size half-direct-drive wind driven generator shaft current measurement sensor
CN112462125A (en) * 2020-11-14 2021-03-09 武汉启亦电气有限公司 Clamp-on ammeter with double breath
EP4124869A1 (en) * 2021-07-31 2023-02-01 LEM International SA Current transducer
WO2023011916A1 (en) * 2021-07-31 2023-02-09 Lem International Sa Current transducer
CN117642641A (en) * 2021-07-31 2024-03-01 莱姆国际股份有限公司 Current sensor
CN117642641B (en) * 2021-07-31 2024-09-03 莱姆电子(中国)有限公司 Current Sensors
US12203963B2 (en) 2021-07-31 2025-01-21 Lem International Sa Current transducer

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