JPS6449973A - Optical current transformer - Google Patents

Optical current transformer

Info

Publication number
JPS6449973A
JPS6449973A JP62205221A JP20522187A JPS6449973A JP S6449973 A JPS6449973 A JP S6449973A JP 62205221 A JP62205221 A JP 62205221A JP 20522187 A JP20522187 A JP 20522187A JP S6449973 A JPS6449973 A JP S6449973A
Authority
JP
Japan
Prior art keywords
planes
storage case
effect material
faraday effect
gap
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
JP62205221A
Other languages
Japanese (ja)
Inventor
Takeshi Sawa
Kiyoshi Kurosawa
Hiroshi Murase
Hitoshi Okubo
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.)
Toshiba Corp
Tokyo Electric Power Co Holdings Inc
Original Assignee
Toshiba Corp
Tokyo Electric Power Co Inc
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 Toshiba Corp, Tokyo Electric Power Co Inc filed Critical Toshiba Corp
Priority to JP62205221A priority Critical patent/JPS6449973A/en
Publication of JPS6449973A publication Critical patent/JPS6449973A/en
Pending legal-status Critical Current

Links

Landscapes

  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

PURPOSE:To prevent mechanical stress from being applied to a Faraday effect material and to hold an optical axis invariably constant by arranging elastic bodies on only three planes of the internal surface of a storage case and pressing the Faraday effect material against other three planes. CONSTITUTION:Two planes of the Faraday effect material 1 including an incidence surface 2 and a projecting surface 3 for light are brought into contact with the internal surface of the storage case 4. A gap is formed between other two planes parallel to said two planes and the internal surface of the storage case 4 and the gap is filled with elastic bodies 14a and 14b formed of silicone rubber, etc., and plates 15a and 15b made of rigid bodies. A hole part is provided at part of the storage case on the side where the gap is formed and elastic bodies 16a, 16b, 16c, 16d, 16e, and 16f made of metallic springs, etc., are arranged in the hole part and fixed with pressure plates 17a and 17b. Then a conductor 18 where a current to be measured flows is provided at the center part of the Faraday effect material 1.
JP62205221A 1987-08-20 1987-08-20 Optical current transformer Pending JPS6449973A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62205221A JPS6449973A (en) 1987-08-20 1987-08-20 Optical current transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62205221A JPS6449973A (en) 1987-08-20 1987-08-20 Optical current transformer

Publications (1)

Publication Number Publication Date
JPS6449973A true JPS6449973A (en) 1989-02-27

Family

ID=16503417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62205221A Pending JPS6449973A (en) 1987-08-20 1987-08-20 Optical current transformer

Country Status (1)

Country Link
JP (1) JPS6449973A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613017A1 (en) * 1993-02-22 1994-08-31 GEC ALSTHOM T & D BALTEAU Device for optically measuring current intensity
EP0650066A1 (en) * 1993-10-21 1995-04-26 Fuji Electric Co. Ltd. Optical current transducer
US5973492A (en) * 1997-04-16 1999-10-26 Ma; Xianyun High accuracy optical current transducer thta eliminates birefringence

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0613017A1 (en) * 1993-02-22 1994-08-31 GEC ALSTHOM T & D BALTEAU Device for optically measuring current intensity
EP0650066A1 (en) * 1993-10-21 1995-04-26 Fuji Electric Co. Ltd. Optical current transducer
US5488291A (en) * 1993-10-21 1996-01-30 Fuji Electric Co., Ltd. Optical current transformer
US5973492A (en) * 1997-04-16 1999-10-26 Ma; Xianyun High accuracy optical current transducer thta eliminates birefringence

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