CH486758A - Electricity transformer - Google Patents

Electricity transformer

Info

Publication number
CH486758A
CH486758A CH399169A CH399169A CH486758A CH 486758 A CH486758 A CH 486758A CH 399169 A CH399169 A CH 399169A CH 399169 A CH399169 A CH 399169A CH 486758 A CH486758 A CH 486758A
Authority
CH
Switzerland
Prior art keywords
electricity transformer
transformer
electricity
Prior art date
Application number
CH399169A
Other languages
German (de)
Inventor
Lester Steen Floyd
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of CH486758A publication Critical patent/CH486758A/en

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)
CH399169A 1968-03-20 1969-03-17 Electricity transformer CH486758A (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
CH486758A true CH486758A (en) 1970-02-28

Family

ID=24870730

Family Applications (1)

Application Number Title Priority Date Filing Date
CH399169A CH486758A (en) 1968-03-20 1969-03-17 Electricity transformer

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
GB1231108A (en) 1971-05-12
US3449703A (en) 1969-06-10

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Legal Events

Date Code Title Description
PL Patent ceased