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Single Phase Optical Current Transformer
Abstract: Provided is a single phase optical current transformer which reliably measures large electrical currents can be economically manufactured in a compact size and has a simple assembly operation. An installation base is securely attached to part of the outer peripheral surface of a cylindrical container (1) which has an electrical conductive body (2) arranged thereinside and a case which stores a Faraday effect member is detachably secured to the installation base. The Faraday effect member (10) is constructed by using two optical fibers (24A 24B) having prescribed dimensions to provide first and second optical paths (11A 11B) maintained in parallel with a predetermined interval therebetween and arranged so as to intersect the axial direction of the electrical conductive body (2) and by providing a mirror surface (12) which reflects linearly polarized light at one end surface of each optical fiber. Linearly polarized light from the same light source falls incident on each of the first and the second optical paths (11A 11B) and current flowing in the electrical conductive body (2) is measured from the Faraday rotation angle of the linearly polarized light reflected and returned by the mirror surface (12).
Notices, Deadlines & Correspondence
Patent Information
Applicants
HITACHI LTD.
TOKO ELECTRIC CORPORATION
Inventors
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 5405-delnp-2012-Priority Documents-(18-06-2012).pdf | 2012-06-18 |
| 2 | 5405-delnp-2012-Form-2-(18-06-2012).pdf | 2012-06-18 |
| 3 | 5405-delnp-2012-Form-13-(18-06-2012).pdf | 2012-06-18 |
| 4 | 5405-delnp-2012-English Translation-(18-06-2012).pdf | 2012-06-18 |
| 5 | 5405-delnp-2012-Drawing-(18-06-2012)0002.pdf | 2012-06-18 |
| 6 | 5405-delnp-2012-Drawing-(18-06-2012).pdf | 2012-06-18 |
| 7 | 5405-delnp-2012-Description (Complete)-(18-06-2012)0002.pdf | 2012-06-18 |
| 8 | 5405-delnp-2012-Description (Complete)-(18-06-2012).pdf | 2012-06-18 |
| 9 | 5405-delnp-2012-Correspondence Others-(18-06-2012).pdf | 2012-06-18 |
| 10 | 5405-delnp-2012-Claims-(18-06-2012)0002.pdf | 2012-06-18 |
| 11 | 5405-delnp-2012-Claims-(18-06-2012).pdf | 2012-06-18 |
| 12 | 5405-delnp-2012-Abstract-(18-06-2012)0002.pdf | 2012-06-18 |
| 13 | 5405-delnp-2012-Abstract-(18-06-2012).pdf | 2012-06-18 |
| 14 | 5405-DELNP-2012.pdf | 2012-07-09 |
| 15 | 5405-delnp-2012-PCT-(25-07-2012).pdf | 2012-07-25 |
| 16 | 5405-delnp-2012-Correspondence Others-(25-07-2012).pdf | 2012-07-25 |
| 17 | 5405-delnp-2012-Form-1-(25-10-2012).pdf | 2012-10-25 |
| 18 | 5405-delnp-2012-Correspondence-Others-(25-10-2012).pdf | 2012-10-25 |
| 19 | 5405-delnp-2012-Form-3-(27-11-2012).pdf | 2012-11-27 |
| 20 | 5405-delnp-2012-Correspondence Others-(27-11-2012).pdf | 2012-11-27 |
| 21 | 5405-delnp-2012-GPA.pdf | 2013-06-04 |
| 22 | 5405-delnp-2012-Form-5.pdf | 2013-06-04 |
| 23 | 5405-delnp-2012-Form-2.pdf | 2013-06-04 |
| 24 | 5405-delnp-2012-Form-18.pdf | 2013-06-04 |
| 25 | 5405-delnp-2012-Form-13.pdf | 2013-06-04 |
| 26 | 5405-delnp-2012-Form-1.pdf | 2013-06-04 |
| 27 | 5405-delnp-2012-Correspondence-Others.pdf | 2013-06-04 |
| 28 | 5405-delnp-2012-Form-3-(02-08-2013).pdf | 2013-08-02 |
| 29 | 5405-delnp-2012-Correspondence Others-(02-08-2013).pdf | 2013-08-02 |
| 30 | 5405-delnp-2012-Assignment-(02-08-2013).pdf | 2013-08-02 |
| 31 | 5405-delnp-2012-Correspondence-Others-(14-03-2014).pdf | 2014-03-14 |
| 32 | 5405-DELNP-2012-FER.pdf | 2017-12-20 |
| 33 | 5405-DELNP-2012-FORM 4(ii) [07-06-2018(online)].pdf | 2018-06-07 |
| 34 | 5405-DELNP-2012-AbandonedLetter.pdf | 2019-01-24 |
Search Strategy
| 1 | 5405DELNP2012Searchstratgy_12-05-2017.pdf |