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Paper Abstract and Keywords
Presentation 2019-03-01 10:35
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 (Chitose Inst. of Science & Technology) EMD2018-59 Link to ES Tech. Rep. Archives: EMD2018-59
Abstract (in Japanese) (See Japanese page) 
(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) 
(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. 462, EMD2018-59, pp. 1-6, March 2019.
Paper # EMD2018-59 
Date of Issue 2019-02-22 (EMD) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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 EMD2018-59 Link to ES Tech. Rep. Archives: EMD2018-59

Conference Information
Committee EMD  
Conference Date 2019-03-01 - 2019-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2019-03-EMD 
Language Japanese 
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  
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
Date Time 2019-03-01 10:35:00 
Presentation Time 20 
Registration for EMD 
Paper # IEICE-EMD2018-59 
Volume (vol) IEICE-118 
Number (no) no.462 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-EMD-2019-02-22 


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