| Presentation | 2019-03-01 A study in influences of external magnetic field on break arc characteristics of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A up to 20V-17A Seika Tokumitsu, Makoto Hasegawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For the purpose of investigating influences of application of an external magnetic field on shortenings of break arc durations and arc plasma movements, a AgSnO2 contact pair was operated to break a load current of 14V-7A, 14V-12A, 20V-7A or 20V-17A in a DC inductive (L=5.7mH) load circuit at different contact opening speeds from 1 to 200 mm/s with an external magnetic field applied in different directions. Voltage and current waveforms of break arcs were measured, while simultaneously observing arc movements with a high-speed camera. Reductions of break arc durations were similarly observed with both directions of the applied magnetic field. With slower contact opening speeds or smaller load current levels, magnetic blowing was not observed even with application of external magnetic field, although break arcs became shorter. In the cases of no magnetic blowing, the arc plasma was moved in a direction opposite to the expected Lorentz force direction. The arc current level immediately prior to the arc plasma movement was found to be smaller in the cases with no magnetic blowing, as compared to those in the cases with magnetic blowing. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Electrical contacts / Break arc / Contact opening speed / Magnetic blowing / AgSnO2 contacts / Metallic phase arc / Gaseous phase arc |
| Paper # | EMD2018-59 |
| Date of Issue | 2019-02-22 (EMD) |
| Conference Information | |
| Committee | EMD |
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| Conference Date | 2019/3/1(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Wada(TMC System) |
| Vice Chair | Yoshiki Kayano(Univ. of Electro-Comm.) |
| Secretary | Yoshiki Kayano(Muroran Inst. of Tech.) |
| Assistant | Yuichi Hayashi(ＮＡＩＳＴ) |
| Paper Information | |
| Registration To | Technical Committee on Electromechanical Devices |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A study in influences of external magnetic field on break arc characteristics of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A up to 20V-17A |
| Sub Title (in English) | |
| Keyword(1) | Electrical contacts |
| Keyword(2) | Break arc |
| Keyword(3) | Contact opening speed |
| Keyword(4) | Magnetic blowing |
| Keyword(5) | AgSnO2 contacts |
| Keyword(6) | Metallic phase arc |
| Keyword(7) | Gaseous phase arc |
| 1st Author's Name | Seika Tokumitsu |
| 1st Author's Affiliation | Chitose Institute of Science and Technology(Chitose Inst. of Science & Technology) |
| 2nd Author's Name | Makoto Hasegawa |
| 2nd Author's Affiliation | Chitose Institute of Science and Technology(Chitose Inst. of Science & Technology) |
| Date | 2019-03-01 |
| Paper # | EMD2018-59 |
| Volume (vol) | vol.118 |
| Number (no) | EMD-462 |
| Page | pp.pp.1-6(EMD), |
| #Pages | 6 |
| Date of Issue | 2019-02-22 (EMD) |