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Paper Abstract and Keywords
Presentation 2020-01-17 15:35
Arc movement observation of DC inductive break arcs of AgSnO2 contacts up to 20V-17A under external magnetic field application
Makoto Hasegawa, Seika Tokumitsu (Chitose Inst. of Sci.&Tech.) EMD2019-51 Link to ES Tech. Rep. Archives: EMD2019-51
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) electrical contacts / AgSnO2 contacts / break arc / inductive load / magnetic blowing / arc movement / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 370, EMD2019-51, pp. 17-21, Jan. 2020.
Paper # EMD2019-51 
Date of Issue 2020-01-10 (EMD) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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 EMD2019-51 Link to ES Tech. Rep. Archives: EMD2019-51

Conference Information
Committee EMD  
Conference Date 2020-01-17 - 2020-01-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Rental hall Shonan Hiratsuka 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To EMD 
Conference Code 2020-01-EMD 
Language Japanese 
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.)
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Date Time 2020-01-17 15:35:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # EMD2019-51 
Volume (vol) vol.119 
Number (no) no.370 
Page pp.17-21 
Date of Issue 2020-01-10 (EMD) 

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