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Paper Abstract and Keywords
Presentation 2007-10-19 10:55
Break Arc Duration at Carbon Contacts in an Inductive Circuit
Keiichi Suhara (TNCT) EMD2007-59
Abstract (in Japanese) (See Japanese page) 
(in English) In order to investigate the effectiveness of the calculation method for break arc as well as the original arc $V$-$I$ characteristics, break arc duration at carbon contacts in an inductive dc circuit was measured and calculated; and the results were compared with each other. Arc duration can be theoretically known by calculating the change of arc current and then estimating the time for the arc current to decrease to arc extinction current. In an inductive circuit, the arc extinction current is less than the generally known minimum arc current; but, in real situation, its value cannot be decided clearly. Fortunately, the minimum arc current of carbon electrode is 0.01 -- 0.03 A; it is less than 1/10 of those of metal electrodes. Although the minimum arc current and arc extinction current are different in general, both values of carbon can be approximated to zero because its minimum arc current is extremely small. Under these circumstances, break arc duration was calculated and the calculation method, including the original arc $V$-$I$ characteristics, was shown to be effective.
Keyword (in Japanese) (See Japanese page) 
(in English) break arc / inductive circuit / arc duration / / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 272, EMD2007-59, pp. 19-24, Oct. 2007.
Paper # EMD2007-59 
Date of Issue 2007-10-12 (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)
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Conference Information
Committee EMD  
Conference Date 2007-10-19 - 2007-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Keio Univ. Hiyoshi Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Tribology, etc 
Paper Information
Registration To EMD 
Conference Code 2007-10-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Break Arc Duration at Carbon Contacts in an Inductive Circuit 
Sub Title (in English)  
Keyword(1) break arc  
Keyword(2) inductive circuit  
Keyword(3) arc duration  
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1st Author's Name Keiichi Suhara  
1st Author's Affiliation Tokyo National College of Technology (TNCT)
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Speaker Author-1 
Date Time 2007-10-19 10:55:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # EMD2007-59 
Volume (vol) vol.107 
Number (no) no.272 
Page pp.19-24 
#Pages 6 
Date of Issue 2007-10-12 (EMD) 

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