GB1231108A - - Google Patents

Info

Publication number
GB1231108A
GB1231108A GB1231108DA GB1231108A GB 1231108 A GB1231108 A GB 1231108A GB 1231108D A GB1231108D A GB 1231108DA GB 1231108 A GB1231108 A GB 1231108A
Authority
GB
United Kingdom
Prior art keywords
march
wound
core
undisturbed
heading
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
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 filed Critical
Publication of GB1231108A publication Critical patent/GB1231108A/en
Expired 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
    • H01F38/30—Constructions
    • 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
    • G01R15/18—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers
    • G01R15/181—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using inductive devices, e.g. transformers using coils without a magnetic core, e.g. Rogowski coils
    • 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
    • H01F2038/305—Constructions with toroidal magnetic core

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

1,231,108. Current transformers. GENERAL ELECTRIC CO. 13 March, 1969 [20 March, 1968], No. 13209/69. Heading H1T. A current transformer 20 for measuring large currents in a conductor 10, undisturbed by stray magnetic fields from adjacent conductors, consists of a non-magnetic non-conducting core 22 wound with a secondary winding 24 having an even number of layers, each wound over the whole core so that both ends of the complete winding are at A.
GB1231108D 1968-03-20 1969-03-13 Expired GB1231108A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71460568A 1968-03-20 1968-03-20

Publications (1)

Publication Number Publication Date
GB1231108A true GB1231108A (en) 1971-05-12

Family

ID=24870730

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231108D Expired GB1231108A (en) 1968-03-20 1969-03-13

Country Status (5)

Country Link
US (1) US3449703A (en)
CH (1) CH486758A (en)
DE (1) DE1913553A1 (en)
FR (1) FR2004314A1 (en)
GB (1) GB1231108A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE29019E (en) * 1969-01-22 1976-10-26 Yeda Research & Development Co. Ltd. Intruder detection system
US3754223A (en) * 1970-01-21 1973-08-21 Yeda Res & Dev Intruder detection system
US3806798A (en) * 1973-01-29 1974-04-23 Balsbaugh Labor Inc Electrodeless conductivity measuring system
US3867657A (en) * 1974-03-29 1975-02-18 Westinghouse Electric Corp Generator having shielded current transformers positioned therein
FR2471034A1 (en) * 1979-12-04 1981-06-12 Merlin Gerin Inductive current sensor for multipole AC switch - uses toroidal transformer core, carrying disjunction current, and secondary coil wound over insulation of core
FR2564594B1 (en) * 1984-05-21 1986-09-12 Merlin Gerin CURRENT SENSOR WITH AMAGNETIC CORE
AU611126B2 (en) * 1987-02-19 1991-06-06 Westinghouse Electric Corporation Electromagnetic contactor with lightweight wide range current transducer with sintered powdered metal core
US4887029A (en) * 1988-03-18 1989-12-12 Westinghouse Electric Corp. Mutual inductance current transducer, method of making and electric energy meter incorporating same
US5341083A (en) * 1991-09-27 1994-08-23 Electric Power Research Institute, Inc. Contactless battery charging system
US5301096A (en) * 1991-09-27 1994-04-05 Electric Power Research Institute Submersible contactless power delivery system
US5225769A (en) * 1992-02-21 1993-07-06 Zmd Corporation Defibrillation discharge current sensor
FR2712423B1 (en) * 1993-11-08 1996-02-09 Gec Alsthom T & D Sa Rogowski coil usable in an electrical installation with an earthed metal casing and method of manufacturing such a coil.
US5615075A (en) * 1995-05-30 1997-03-25 General Electric Company AC/DC current sensor for a circuit breaker
JPH10214736A (en) * 1997-01-28 1998-08-11 Toyo Denso Co Ltd High voltage generating transformer
US6566994B1 (en) * 1997-03-17 2003-05-20 Fluke Corporation Coil for an AC current sensor
FR2783085B1 (en) * 1998-09-09 2000-10-06 Alstom Technology TORIC COIL WITHOUT MAGNETIC CORE COMPRISING TWO SUPERIMPOSED WINDINGS
TR200905709A2 (en) * 2009-07-23 2009-09-23 Deni̇zoğlu Cemaletti̇n Winding method for eliminating tooth magnetic effects in low power current transformers.
US8957753B2 (en) * 2011-11-22 2015-02-17 Abb Technology Ag Current transformer
CN110676038A (en) * 2018-07-02 2020-01-10 福迪威（上海）工业仪器技术研发有限公司 Current transformer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241127A (en) * 1938-04-14 1941-05-06 Westinghouse Electric & Mfg Co Protective relay
US2975384A (en) * 1954-09-24 1961-03-14 Sprague Electric Co Toroidal inductor combinations
DE1248154B (en) * 1964-04-06 1967-08-24 Siemens Ag Converter combined with a voltage converter
US3299384A (en) * 1964-07-01 1967-01-17 Ibm Wide-band transformer having neutralizing winding
US3353132A (en) * 1965-05-27 1967-11-14 Gen Electric Leakage flux suppressor windings for transformers

Also Published As

Publication number Publication date
DE1913553A1 (en) 1969-10-09
FR2004314A1 (en) 1969-11-21
CH486758A (en) 1970-02-28
US3449703A (en) 1969-06-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees