JPS6453169A - Optical current transformer - Google Patents
Optical current transformerInfo
- Publication number
- JPS6453169A JPS6453169A JP62208358A JP20835887A JPS6453169A JP S6453169 A JPS6453169 A JP S6453169A JP 62208358 A JP62208358 A JP 62208358A JP 20835887 A JP20835887 A JP 20835887A JP S6453169 A JPS6453169 A JP S6453169A
- Authority
- JP
- Japan
- Prior art keywords
- light
- conductor
- periphery
- current transformer
- quadrilateral shape
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 4
- 239000004020 conductor Substances 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 230000010354 integration Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000013307 optical fiber Substances 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
Abstract
PURPOSE:To obtain the high-accuracy optical current transformer even in environment of temperature variation and vibration by arranging four columnar Faraday effect materials at the periphery of a conductor in a quadrilateral shape, allowing light to make one round, and measuring a phase difference based upon Faraday effect. CONSTITUTION:The four columnar Faraday effect materials 1 are arranged at the periphery of the conductor 3 in the quadrilateral shape and the light guided by an optical fiber is received by an optical head part 10 equipped with a lens and a polarizer and allowed to make one round, the light is photodetected by a head part 10 equipped with an analyzer and a lens, and this turn-around integration type optical current transformer measures the current of the conductor 3 according to a Faraday rotary polarization angle. Prisms 4 are placed at three corners of the quadrilateral shape and one corner is an entrance and exit for the light. The whole body is fixed flexibly in a storage case 2 and transparent liquid fills the periphery. The current can be measured with high accuracy even in the environment of temperature variation and vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208358A JPS6453169A (en) | 1987-08-24 | 1987-08-24 | Optical current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208358A JPS6453169A (en) | 1987-08-24 | 1987-08-24 | Optical current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6453169A true JPS6453169A (en) | 1989-03-01 |
Family
ID=16554969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62208358A Pending JPS6453169A (en) | 1987-08-24 | 1987-08-24 | Optical current transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6453169A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
1987
- 1987-08-24 JP JP62208358A patent/JPS6453169A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS62285081A (en) | Magneto-optic current transformer device | |
| NO169256C (en) | MEASURING DEVICE FOR AA DETERMINING CHARACTERISTICAL MEASUREMENT DATA UNDER OPTICAL SINGLE MODE FIBER | |
| RU2086988C1 (en) | Fiber-optic device for measurement of current strength | |
| JPS6453169A (en) | Optical current transformer | |
| JPS6491075A (en) | Magnetic field distribution measuring apparatus | |
| JPS6423126A (en) | Multiple light source polarization analyzing method | |
| US3580681A (en) | Apparatus for automatically measuring the properties of elliptically polarized light | |
| JPS557654A (en) | Measuring unit for variance of refractive index | |
| SU1264084A1 (en) | Current measuring method | |
| SU1506412A1 (en) | Balance circuit for polarometric measurements | |
| JPS5744823A (en) | Fourier spectroscope device | |
| CN85103001A (en) | Combined measuring instrument of magneto-optical effect | |
| JPS5935156A (en) | Optical current transformer | |
| JPS55125420A (en) | Device for measuring quantity of extinction | |
| JPS5667764A (en) | Voltage/current measurement device by light beam | |
| RU2042142C1 (en) | Device for testing magnetic field | |
| CN85105751A (en) | The manufacture method of ac-dc fiber voltage (electric field) meter | |
| SU454511A1 (en) | Magneto-optical probe for measuring magnetic induction | |
| SU461338A1 (en) | Magneto-optical analyzer | |
| RU62713U1 (en) | INFORMATION AND MEASURING DEVICE FOR MAGNETIC FIELD AND ELECTRIC CURRENT CONTROL | |
| JPS5714744A (en) | Apparatus for measuring differential fluorescence | |
| SU970236A1 (en) | Electric field strength meter | |
| JPS5535216A (en) | Detector for break point of optical fiber | |
| JPS6069573A (en) | Magnetic field measuring device and optical frequency modulator | |
| SU1269037A1 (en) | Device for contactless measuring of strength of current |