| Presentation | 2020-01-17 Arc movement observation of DC inductive break arcs of AgSnO2 contacts up to 20V-17A under external magnetic field application Makoto Hasegawa, Seika Tokumitsu, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | AgSnO2 contacts were operated to break an inductive DC load circuit of 14V-7A, 14V-12A, 20V-7A, or 20V-17A with an applied external magnetic field of about B=120mT at contact opening speeds in the range of 1mm/s to 200mm/s. During the break operations, arc voltage and current waveforms were measured, and in addition, arc movements were observed and recorded by means of a high-speed camera. In the cases with slower contact opening speeds and smaller load current levels, the measured arc voltage waveforms indicated shortening in the arc durations, while apparent magnetic blowing phenomena were not observed. In such cases, arc movement observations revealed that break arcs were likely to be moved in the direction opposite to the Lorentz force direction. Such phenomena were repeatedly observed, although any physical mechanism which can explain the phenomena are still unknown. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | electrical contacts / AgSnO2 contacts / break arc / inductive load / magnetic blowing / arc movement |
| Paper # | EMD2019-51 |
| Date of Issue | 2020-01-10 (EMD) |
| Conference Information | |
| Committee | EMD |
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| Conference Date | 2020/1/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Rental hall Shonan Hiratsuka |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Chair | Shinichi Wada(TMC System) |
| Vice Chair | Yoshiki Kayano(Univ. of Electro-Comm.) |
| Secretary | Yoshiki Kayano(Fuji Electric) |
| 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) | Arc movement observation of DC inductive break arcs of AgSnO2 contacts up to 20V-17A under external magnetic field application |
| Sub Title (in English) | |
| Keyword(1) | electrical contacts |
| Keyword(2) | AgSnO2 contacts |
| Keyword(3) | break arc |
| Keyword(4) | inductive load |
| Keyword(5) | magnetic blowing |
| Keyword(6) | arc movement |
| 1st Author's Name | Makoto Hasegawa |
| 1st Author's Affiliation | Chitose Institute of Science and Technology(Chitose Inst. of Sci.&Tech.) |
| 2nd Author's Name | Seika Tokumitsu |
| 2nd Author's Affiliation | Chitose Institute of Science and Technology(Chitose Inst. of Sci.&Tech.) |
| Date | 2020-01-17 |
| Paper # | EMD2019-51 |
| Volume (vol) | vol.119 |
| Number (no) | EMD-370 |
| Page | pp.pp.17-21(EMD), |
| #Pages | 5 |
| Date of Issue | 2020-01-10 (EMD) |