GB1528984A - Alternating current transformers - Google Patents

Alternating current transformers

Info

Publication number
GB1528984A
GB1528984A GB43128/75A GB4312875A GB1528984A GB 1528984 A GB1528984 A GB 1528984A GB 43128/75 A GB43128/75 A GB 43128/75A GB 4312875 A GB4312875 A GB 4312875A GB 1528984 A GB1528984 A GB 1528984A
Authority
GB
United Kingdom
Prior art keywords
current
output
amplifier
controlled
gain
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
GB43128/75A
Other languages
English (en)
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1528984A publication Critical patent/GB1528984A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R21/00—Arrangements for measuring electric power or power factor
    • G01R21/08—Arrangements for measuring electric power or power factor by using galvanomagnetic-effect devices, e.g. Hall-effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/10—Measuring sum, difference or ratio

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Amplifiers (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Measurement Of Current Or Voltage (AREA)
GB43128/75A 1974-11-06 1975-10-21 Alternating current transformers Expired GB1528984A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US521300A US3921069A (en) 1974-11-06 1974-11-06 Variable gain electronic current transformer

Publications (1)

Publication Number Publication Date
GB1528984A true GB1528984A (en) 1978-10-18

Family

ID=24076203

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43128/75A Expired GB1528984A (en) 1974-11-06 1975-10-21 Alternating current transformers

Country Status (7)

Country Link
US (1) US3921069A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5169123A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA1046584A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH600347A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2549315A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2290751A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1528984A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012285A1 (de) * 1978-12-16 1980-06-25 Karl Pfisterer Elektrotechnische Spezialartikel GmbH & Co. KG Vorrichtung zur Abgabe eines optischen Signals abhängig von einer elektrischen Betriebsgrösse eines isolierten Kabels eines Energieversorgungsnetzes
DE9113081U1 (de) * 1991-10-21 1991-12-12 Siemens AG, 8000 München Stromsensor mit integrierter Hallschaltung
RU2329514C1 (ru) * 2007-02-06 2008-07-20 Государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" Устройство для измерения переменного тока

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4278940A (en) * 1979-04-25 1981-07-14 General Electric Company Means for automatically compensating DC magnetization in a transformer
FR2431132A1 (fr) * 1978-07-11 1980-02-08 Westinghouse Electric Corp Compteur d'energie electrique comportant un transducteur de courant a inductance mutuelle
US4435653A (en) 1980-11-26 1984-03-06 Tokyo Shibaura Denki Kabushiki Kaisha In-phase voltage elimination circuit for Hall element
DE3130277A1 (de) * 1981-07-31 1983-02-17 Vacuumschmelze Gmbh, 6450 Hanau Magnetkern aus weichmagnetischem material fuer einen stromsensor mit einem magnetfeldabhaengigen halbleiterelement zur erfassung von gleich- und wechselstroemen
US4467434A (en) * 1981-09-18 1984-08-21 Mcgraw-Edison Co. Solid state watt-hour meter
US4525669A (en) * 1982-12-20 1985-06-25 Sangamo Weston, Inc. Power measurement in an electrical distribution system having three or more wires
US4764720A (en) * 1985-12-05 1988-08-16 Load Controls Incorporated Apparatus and method for measuring variable frequency power
CH677036A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1987-08-06 1991-03-28 Landis & Gyr Betriebs Ag
US5420504A (en) * 1993-07-06 1995-05-30 General Electric Company Noninductive shunt current sensor based on concentric-pipe geometry
US5416408A (en) * 1993-07-06 1995-05-16 General Electric Company Current sensor employing a mutually inductive current sensing scheme with a magnetic field substantially uniform in angular direction
US5446372A (en) * 1993-07-06 1995-08-29 General Electric Company Noninductive shunt current sensor with self-power capability
US5459395A (en) * 1993-07-06 1995-10-17 General Electric Company Reduced flux current sensor
US5453681A (en) * 1993-07-06 1995-09-26 General Electric Company Current sensor employing a mutually inductive current sensing scheme
US5463313A (en) * 1993-09-09 1995-10-31 General Electric Company Reduced magnetic field line integral current sensor
US5438257A (en) * 1993-09-09 1995-08-01 General Electric Company Reduced magnetic flux current sensor
US6026355A (en) * 1996-09-18 2000-02-15 Itron, Inc. Solid state watt-hour meter using GMR sensor
DE10145415A1 (de) 2001-09-14 2003-04-03 Aloys Wobben Messwandler, insbesondere für einen Wechselrichter einer Windenergieanlage
US8587971B2 (en) * 2010-01-13 2013-11-19 Xi'an Hwell Optic-Electric Tech Co., Ltd Electronic current transformer based on complete self-excitation power supply

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3343084A (en) * 1963-06-20 1967-09-19 Westinghouse Electric Corp Hall generator system useful as integrating meter, demand meter and inverse current relay
FR1561156A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1967-12-06 1969-03-28
US3718860A (en) * 1971-08-25 1973-02-27 Us Army Real time digital energy meter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0012285A1 (de) * 1978-12-16 1980-06-25 Karl Pfisterer Elektrotechnische Spezialartikel GmbH & Co. KG Vorrichtung zur Abgabe eines optischen Signals abhängig von einer elektrischen Betriebsgrösse eines isolierten Kabels eines Energieversorgungsnetzes
DE9113081U1 (de) * 1991-10-21 1991-12-12 Siemens AG, 8000 München Stromsensor mit integrierter Hallschaltung
RU2329514C1 (ru) * 2007-02-06 2008-07-20 Государственное унитарное предприятие "Всероссийский электротехнический институт им. В.И. Ленина" Устройство для измерения переменного тока

Also Published As

Publication number Publication date
FR2290751A1 (fr) 1976-06-04
CH600347A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-06-15
JPS5169123A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-06-15
CA1046584A (en) 1979-01-16
US3921069A (en) 1975-11-18
DE2549315A1 (de) 1976-10-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee