JPS5667915A - Current sensor for electronic circuit - Google Patents

Current sensor for electronic circuit

Info

Publication number
JPS5667915A
JPS5667915A JP14352279A JP14352279A JPS5667915A JP S5667915 A JPS5667915 A JP S5667915A JP 14352279 A JP14352279 A JP 14352279A JP 14352279 A JP14352279 A JP 14352279A JP S5667915 A JPS5667915 A JP S5667915A
Authority
JP
Japan
Prior art keywords
magnetic permeability
current
range
iron cores
iron core
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
JP14352279A
Other languages
Japanese (ja)
Inventor
Koreyuki Takeya
Yasumasa Umesato
Seiji Komatsu
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP14352279A priority Critical patent/JPS5667915A/en
Publication of JPS5667915A publication Critical patent/JPS5667915A/en
Pending legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

PURPOSE:To widen a measurement range of a flux passing through a window of an iron core by a method wherein a common secondary coil is wound round two iron cores which are arranged adjacent to each other forming respective independent magnetic circuit and have each different magnetic permeability. CONSTITUTION:Iron cores 5, 6 which are formed into an annular shape with magnetic material having respective different magnetic permeability are placed side by side in coupling holding a space 7 between them. And common secondary coil 8 is wound round both iron cores 5 and 6. A current of an electric power system to be monitored is run penetrating through the window 9 of these iron cores 5, 6. The material of the iron core 5 is made of a material having high magnetic permeability in a small current range for example such as permalloy silicon steel etc. and the material of the iron core 6 is made of a material which has a low magnetic permeability, however, has a high saturation flux density in a large current range such as permendur. With this, a quick rise is obtained in a small current range and a linear characteristic is obtained in a high tension current range thus, making a current sensor applicable for a wide range of current fields available.
JP14352279A 1979-11-06 1979-11-06 Current sensor for electronic circuit Pending JPS5667915A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14352279A JPS5667915A (en) 1979-11-06 1979-11-06 Current sensor for electronic circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14352279A JPS5667915A (en) 1979-11-06 1979-11-06 Current sensor for electronic circuit

Publications (1)

Publication Number Publication Date
JPS5667915A true JPS5667915A (en) 1981-06-08

Family

ID=15340688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14352279A Pending JPS5667915A (en) 1979-11-06 1979-11-06 Current sensor for electronic circuit

Country Status (1)

Country Link
JP (1) JPS5667915A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844799B2 (en) * 2001-04-10 2005-01-18 General Electric Company Compact low cost current sensor and current transformer core having improved dynamic range
JP2005317681A (en) * 2004-04-27 2005-11-10 Fuji Electric Fa Components & Systems Co Ltd Through type current transformer and power receiving/distributing facility provided therewith

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844799B2 (en) * 2001-04-10 2005-01-18 General Electric Company Compact low cost current sensor and current transformer core having improved dynamic range
US7002440B2 (en) * 2001-04-10 2006-02-21 General Electric Company Compact low cost current sensor and current transformer core for circuit breakers having improved dynamic range
JP2005317681A (en) * 2004-04-27 2005-11-10 Fuji Electric Fa Components & Systems Co Ltd Through type current transformer and power receiving/distributing facility provided therewith
JP4636360B2 (en) * 2004-04-27 2011-02-23 富士電機機器制御株式会社 Power distribution facilities

Similar Documents

Publication Publication Date Title
EP0645641B1 (en) Improvements in or relating to MRI magnets
ES8304701A1 (en) Laminated grid and web magnetic cores
KR840006019A (en) Method for manufacturing grain-oriented electrical steel sheet with high magnetic flux density
GB747736A (en) Improvements in or relating to devices comprising a circuit of highly-permeable material and a permanent magnet for producing a pre-magnetizing field in said circuit
GB658355A (en) Improvements in and relating to magnetic cores
US4331919A (en) Apparatus for magnetic testing ferromagnetic sheet or strip material using rectangular coils
JPS57143808A (en) Wound core for stationary electrical equipment
JPS5667915A (en) Current sensor for electronic circuit
JPS5743483A (en) Magnetoelectric transducer
JPS5646516A (en) Inductor for power supply line filter
JPS5776811A (en) Composite core for transformer
GB1272888A (en) Improved electromagnetic apparatus
SU557874A1 (en) Mold for ring annular anisotropic magnets
GB1189410A (en) A direct-current to direct-current converter or a direct voltage to direct voltage convertor
SU697906A1 (en) Eddy-current transducer
JPS55138602A (en) Detection of wire rope position
Morris et al. The magnetic field
US3253242A (en) Cross-field control of transducers
GB942558A (en) Improvements in magnetic-cord inductors with variable magnetization and resonant circuits including such conductors
JPS55105309A (en) High tension transformer
JPS56132558A (en) Electromagnetic ultrasonic wave probe
JPS54148224A (en) Zero-phase-sequence current transformer
GB774508A (en) Improvements in or relating to saturable closed magnetic cores
JPS5593524A (en) Multi-channel magnetic head
Hutchinson et al. External field produced by a cylindrical electromagnet