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| Presentation | 2019-01-18 15:30 Influences of contact opening speeds and external magnetic field on shortening of break arc durations of AgSnO2 contacts in a DC inductive load circuit up to 20V-17A Seika Tokumitsu, Makoto Hasegawa (Chitose Inst. of Science & Technology)  EMD2018-52 Link to ES Tech. Rep. Archives: EMD2018-52 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In a DC inductive (L=5.7mH) load circuit, a AgSnO2 contact pair with applied external magnetic field of about 120mT was operated to break a load current of 14V-12A, 20V-7A or 20V-17A at different contact opening speeds from 1 to 200 mm/s. Voltage and current waveforms of break arcs were measured, and arc movement was observed with a high-speed camera at each condition. With slower contact opening speeds or smaller load current levels, magnetic blowing was not observed even with applied magnetic field. Lorentz force in non-blowing cases were calculated from the observed arc current waveforms, resulting in estimation in which the minimum Lorentz force required to realize magnetic blowing will be around 0.08mN. However, in cases with slower contact opening speeds or smaller load current levels, magnetic field application still resulted in shortenings of break arcs, implying that any factors other than magnetic blowing seem to be involved in break arc shortening due to application of external magnetic field. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Electrical contacts / Break arc / Contact opening speed / Magnetic blowing / AgSnO2 contacts / Metallic phase arc / Gaseous phase arc / | |
| Reference Info. | IEICE Tech. Rep., vol. 118, no. 407, EMD2018-52, pp. 23-28, Jan. 2019. | |
| Paper # | EMD2018-52 | |
| Date of Issue | 2019-01-11 (EMD) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | EMD2018-52 Link to ES Tech. Rep. Archives: EMD2018-52 |
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| Conference Information | |
| Committee | EMD |
| Conference Date | 2019-01-18 - 2019-01-18 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | EMD |
| Conference Code | 2019-01-EMD |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Influences of contact opening speeds and external magnetic field on shortening of break arc durations of AgSnO2 contacts in a DC inductive load circuit 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 |
| Keyword(8) | |
| 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) |
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| Speaker | Author-1 |
| Date Time | 2019-01-18 15:30:00 |
| Presentation Time | 25 minutes |
| Registration for | EMD |
| Paper # | EMD2018-52 |
| Volume (vol) | vol.118 |
| Number (no) | no.407 |
| Page | pp.23-28 |
| #Pages | 6 |
| Date of Issue | 2019-01-11 (EMD) |
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