GB1436302A - Digital magneto-optical current-measuring instruments - Google Patents

Digital magneto-optical current-measuring instruments

Info

Publication number
GB1436302A
GB1436302A GB2198274A GB2198274A GB1436302A GB 1436302 A GB1436302 A GB 1436302A GB 2198274 A GB2198274 A GB 2198274A GB 2198274 A GB2198274 A GB 2198274A GB 1436302 A GB1436302 A GB 1436302A
Authority
GB
United Kingdom
Prior art keywords
polarizer
digit
light
faraday
devices
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
GB2198274A
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.)
Siemens Corp
Original Assignee
Siemens 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 Siemens Corp filed Critical Siemens Corp
Publication of GB1436302A publication Critical patent/GB1436302A/en
Expired 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
    • G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
    • G01R15/245—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect
    • G01R15/246—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices using magneto-optical modulators, e.g. based on the Faraday or Cotton-Mouton effect based on the Faraday, i.e. linear magneto-optic, effect
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F7/00—Optical analogue/digital converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/34—Analogue value compared with reference values

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Optics & Photonics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
  • Measuring Magnetic Variables (AREA)
GB2198274A 1973-06-29 1974-05-17 Digital magneto-optical current-measuring instruments Expired GB1436302A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2333242A DE2333242C2 (de) 1973-06-29 1973-06-29 Digitaler magnetooptischer Meßwandler für Hochspannung

Publications (1)

Publication Number Publication Date
GB1436302A true GB1436302A (en) 1976-05-19

Family

ID=5885526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2198274A Expired GB1436302A (en) 1973-06-29 1974-05-17 Digital magneto-optical current-measuring instruments

Country Status (6)

Country Link
US (1) US3906343A (enExample)
JP (1) JPS5039180A (enExample)
CH (1) CH584412A5 (enExample)
DE (1) DE2333242C2 (enExample)
FR (1) FR2235369B1 (enExample)
GB (1) GB1436302A (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4334781A (en) * 1979-06-08 1982-06-15 Tokyo Shibaura Denki Kabushiki Kaisha Optical sensing system
DE3375950D1 (en) * 1983-05-16 1988-04-14 Elektroprojekt Anlagenbau Veb Measuring transducer based on the magneto-optical effect
US4683421A (en) * 1985-03-29 1987-07-28 Westinghouse Electric Corp. Drift compensation technique for a magneto-optic current sensor
US5124634A (en) * 1989-03-14 1992-06-23 Square D Company Ring optical current transducer
US5973492A (en) * 1997-04-16 1999-10-26 Ma; Xianyun High accuracy optical current transducer thta eliminates birefringence

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1268665A (fr) * 1959-07-30 1961-08-04 Thomson Houston Comp Francaise Transducteur arithmétique
GB1219268A (en) * 1968-01-26 1971-01-13 Mullard Ltd Electric current measurer
DE1955403C3 (de) * 1969-10-30 1974-04-25 Siemens Ag, 1000 Berlin U. 8000 Muenchen Digitale Meßeinrichtung für Ströme in Hochspannungsleitern
CH520321A (de) * 1970-05-26 1972-03-15 Bbc Brown Boveri & Cie Verfahren und Anordnung zur Umformung des Signalflusses in einer lichtelektrischen Messeinrichtung
FR2110625A5 (enExample) * 1970-10-23 1972-06-02 Alsthom Savoisienne
FR2116732A5 (enExample) * 1970-12-04 1972-07-21 Alsthom Savoisienne

Also Published As

Publication number Publication date
FR2235369B1 (enExample) 1978-03-31
DE2333242B1 (de) 1974-05-09
US3906343A (en) 1975-09-16
DE2333242C2 (de) 1974-12-05
CH584412A5 (enExample) 1977-01-31
FR2235369A1 (enExample) 1975-01-24
JPS5039180A (enExample) 1975-04-11

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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