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Paper Abstract and Keywords
Presentation 2010-11-11 08:30
Dependence of the Break arcs Driven by Transverse Magnetic Field on the Contact Opening Speed in a DC High-voltage Resistive Circuit
Tomohiro Atsumi, Junya Sekikawa, Takayoshi Kubono (Shizuoka Univ.) EMD2010-67 Link to ES Tech. Rep. Archives: EMD2010-67
Abstract (in Japanese) (See Japanese page) 
(in English) Break arcs are generated between pure silver electrical contacts in a DC high-voltage resistive circuit. The break arc is driven by the external transverse magnetic field of a permanent magnet. Electrical contacts are separated at constant opening speed at 25, 50, 75mm/s. The maximum supply voltage is 300V. The maximum circuit current when electrical contacts are closed is 20A. The maximum output power of the supply is limited to 6kW. The gap between the contacts and the magnet is defined as x. The gap x is 2.5mm. The magnetic flux density at the center of the magnet Bc is 121mT. The break arc is observed with a high-speed camera. The effect of the magnetic field on the arc duration is examined. The effect when the contacts opening speed is varied is examined. As a result, the arc duration shortened extremely by the transverse magnetic field using the permanent magnet. The arc duration decreased with increase of the opening speed. Just before lengthening of the break arcs between the contacts, in this experimental condition, the arc length is constant and the Lorentz force is proportional to the arc current.
Keyword (in Japanese) (See Japanese page) 
(in English) break arc / electrical contact / magnetic field / high-speed camera / contact opening speed / / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 270, EMD2010-67, pp. 1-4, Nov. 2010.
Paper # EMD2010-67 
Date of Issue 2010-11-04 (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 EMD2010-67 Link to ES Tech. Rep. Archives: EMD2010-67

Conference Information
Committee EMD  
Conference Date 2010-11-11 - 2010-11-12 
Place (in Japanese) (See Japanese page) 
Place (in English) Xi'an Jiaotong University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) IS-EMD2010 (10th International Session in Electro-Mechanical Devices) 
Paper Information
Registration To EMD 
Conference Code 2010-11-EMD 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Dependence of the Break arcs Driven by Transverse Magnetic Field on the Contact Opening Speed in a DC High-voltage Resistive Circuit 
Sub Title (in English)  
Keyword(1) break arc  
Keyword(2) electrical contact  
Keyword(3) magnetic field  
Keyword(4) high-speed camera  
Keyword(5) contact opening speed  
1st Author's Name Tomohiro Atsumi  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Junya Sekikawa  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
3rd Author's Name Takayoshi Kubono  
3rd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Date Time 2010-11-11 08:30:00 
Presentation Time 15 
Registration for EMD 
Paper # IEICE-EMD2010-67 
Volume (vol) IEICE-110 
Number (no) no.270 
Page pp.1-4 
#Pages IEICE-4 
Date of Issue IEICE-EMD-2010-11-04 

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