JPS57128854A - Current transformer - Google Patents

Current transformer

Info

Publication number
JPS57128854A
JPS57128854A JP56016038A JP1603881A JPS57128854A JP S57128854 A JPS57128854 A JP S57128854A JP 56016038 A JP56016038 A JP 56016038A JP 1603881 A JP1603881 A JP 1603881A JP S57128854 A JPS57128854 A JP S57128854A
Authority
JP
Japan
Prior art keywords
hall
current transformer
errors
elements
hall element
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
Application number
JP56016038A
Other languages
Japanese (ja)
Inventor
Shunei Kodama
Yoshiaki Tomaki
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP56016038A priority Critical patent/JPS57128854A/en
Publication of JPS57128854A publication Critical patent/JPS57128854A/en
Pending 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

PURPOSE:To obtain an electric current transformer that can reduce errors in high frequency measurement by connecting a pair of Hall elements in such a way that the induced voltages are subtracted thereby eliminating Hall element errors substantially. CONSTITUTION:A Hall element which forms an electric current transformer together with an annular iron core providd with a gap part enclosing a bus or the like to be measured, detects the magnetic flux generated in proportion to the current flowing in the bus and outputs the corresponding hall voltage via load 7 is constituted of a pair of Hall elements 8a, 8b. If such elements 8a, 8b, etc. are installed mutually opposite in the front and rear or the like, the Hall voltage components are added and the induction voltage components induced by electromagnetic induction are subtracted, whereby Hall element errors are substantially eliminated, and the current transformer which reduces errors in high frequency measurement is obtained.
JP56016038A 1981-02-02 1981-02-02 Current transformer Pending JPS57128854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56016038A JPS57128854A (en) 1981-02-02 1981-02-02 Current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56016038A JPS57128854A (en) 1981-02-02 1981-02-02 Current transformer

Publications (1)

Publication Number Publication Date
JPS57128854A true JPS57128854A (en) 1982-08-10

Family

ID=11905406

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56016038A Pending JPS57128854A (en) 1981-02-02 1981-02-02 Current transformer

Country Status (1)

Country Link
JP (1) JPS57128854A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253264A (en) * 1987-04-09 1988-10-20 Fujitsu Ltd Current detector
WO1996028738A1 (en) * 1995-03-16 1996-09-19 Horstmann Timers & Controls Limited Electricity measurement apparatus
WO2000060366A1 (en) * 1999-03-31 2000-10-12 Aeg Niederspannungstechnik Gmbh & Co. Kg Current meter
WO2007068221A1 (en) * 2005-12-14 2007-06-21 Siemens Aktiengesellschaft Measuring device for forming a current measured value
JP2008002876A (en) * 2006-06-21 2008-01-10 Fuji Electric Systems Co Ltd Current sensor and electronic watthour meter
JP2008145352A (en) * 2006-12-12 2008-06-26 Jeco Co Ltd Current sensor and current detecting method
WO2013161496A1 (en) * 2012-04-27 2013-10-31 アルプス・グリーンデバイス株式会社 Current sensor
JP2015232445A (en) * 2014-06-09 2015-12-24 日産自動車株式会社 Magnetic sensor and motor having the same
CN107561336A (en) * 2017-07-19 2018-01-09 中国科学院合肥物质科学研究院 A kind of Hall slice mounting structure based on Zero-flux hall large-current sensor
CN107741518A (en) * 2017-11-15 2018-02-27 国网辽宁省电力有限公司鞍山供电公司 A kind of cable shaft earth current test device of more opening joint testing currents

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871681A (en) * 1971-12-28 1973-09-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871681A (en) * 1971-12-28 1973-09-27

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63253264A (en) * 1987-04-09 1988-10-20 Fujitsu Ltd Current detector
WO1996028738A1 (en) * 1995-03-16 1996-09-19 Horstmann Timers & Controls Limited Electricity measurement apparatus
WO2000060366A1 (en) * 1999-03-31 2000-10-12 Aeg Niederspannungstechnik Gmbh & Co. Kg Current meter
WO2007068221A1 (en) * 2005-12-14 2007-06-21 Siemens Aktiengesellschaft Measuring device for forming a current measured value
JP2008002876A (en) * 2006-06-21 2008-01-10 Fuji Electric Systems Co Ltd Current sensor and electronic watthour meter
JP2008145352A (en) * 2006-12-12 2008-06-26 Jeco Co Ltd Current sensor and current detecting method
WO2013161496A1 (en) * 2012-04-27 2013-10-31 アルプス・グリーンデバイス株式会社 Current sensor
JP2015232445A (en) * 2014-06-09 2015-12-24 日産自動車株式会社 Magnetic sensor and motor having the same
CN107561336A (en) * 2017-07-19 2018-01-09 中国科学院合肥物质科学研究院 A kind of Hall slice mounting structure based on Zero-flux hall large-current sensor
CN107741518A (en) * 2017-11-15 2018-02-27 国网辽宁省电力有限公司鞍山供电公司 A kind of cable shaft earth current test device of more opening joint testing currents
CN107741518B (en) * 2017-11-15 2023-12-19 国网辽宁省电力有限公司鞍山供电公司 Cable well grounding current testing device for multi-opening combined current testing

Similar Documents

Publication Publication Date Title
US4278940A (en) Means for automatically compensating DC magnetization in a transformer
ES2002960A6 (en) Current converter for measuring current flowing in an electric conductor.
JPS57128854A (en) Current transformer
JPS6470031A (en) Magnetic resonance apparatus including improved coil system for inclined magnetic field
ATE59480T1 (en) TRANSFORMER FOR MEASURING THE CURRENT FLOWING IN AN ELECTRICAL CONDUCTOR.
YU26890A (en) STATIC ELECTRIC METER
DE3470223D1 (en) An apparatus for sensing and measuring a current on a power transmission line
JPS6430206A (en) Superconducting electromagnet
DE3366747D1 (en) Methods of investigating ground faults particularly on induction furnaces
GB1488775A (en) Current measuring apparatus
GB1255691A (en) Induction meter having light-load adjuster
JPS55125688A (en) Hall effect device
JPS5776451A (en) Measuring circuit for eddy current magnetic field
BR8203362A (en) INDUCTION METER INCLUDING MAGNETIC VOLTAGE AND CURRENT SECTIONS
SU789833A1 (en) Current meter
JPS57156563A (en) Electromagnetic current meter
JPS5759311A (en) Air-core type shunt reactor
GB886455A (en) Improvements in or relating to ammeters
SU1183905A1 (en) Contactless converter of large direct currents
GB640400A (en) Improvements in and relating to electric induction meters
JPS6481685A (en) Current detection circuit
SU1164604A1 (en) Meter of velocity of non-magnetic current-conducting bodies
SU834552A1 (en) Device for measuring direct current
GB1108084A (en) Measurement of thickness and/or electrical resistivity of conductive sheet
GB1221188A (en) Induction electricity meters