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Paper Abstract and Keywords
Presentation 2022-02-10 16:00
Break arcs magnetically blown-out in a 48VDC/300A resistive circuit at constant opening speeds
Haruko Yazaki, Junya Sekikawa (Shizuoka Univ.) R2021-46 EMD2021-14
Abstract (in Japanese) (See Japanese page) 
(in English) Dependences of arc length just before extinction L and contact gap at arc extinction d on contact opening speed v are studied for break arcs generated in a 48VDC resistive circuit and blown-out by transverse magnetic field. Circuit current when electrical contacts were closed I0 was changed from 50A to 300A. The opening speed v is varied over a wide range from 0.05 to 0.5m/s. Magnetic flux density Bx were changed to 5 to 100mT. Following results were obtained. For each I0 and v, The L decreased with increasing the Bx. For each Bx, The L was almost constant with increasing the v for each current I0 when the I0 was lower than 200A. However, the L became shorter when the v was 0.5m/s at I0=200A and 300A.When v=0.5m/s, For each Bx, the L tended to increase with increasing the I0. However, the L was almost constant when the Bx was 50mT and 100mT at I0=200A and 300A. For each I0 and v, The d decreased with increasing the Bx. For each Bx, The d was almost constant with increasing the v when the I0 was lower than 200A.When I0=200A and 300A, the d tended to become longer when the v was slower.When v=0.5m/s, For each Bx, the d tended to increase with increasing the I0. However, the d was almost constant at I0=50A and 100A.
Keyword (in Japanese) (See Japanese page) 
(in English) Break arc / Electrical contacts / High-speed camera / / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 369, EMD2021-14, pp. 18-23, Feb. 2022.
Paper # EMD2021-14 
Date of Issue 2022-02-03 (R, EMD) 
ISSN Online edition: ISSN 2432-6380
Copyright
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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 R2021-46 EMD2021-14

Conference Information
Committee R EMD  
Conference Date 2022-02-10 - 2022-02-10 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2022-02-R-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Break arcs magnetically blown-out in a 48VDC/300A resistive circuit at constant opening speeds 
Sub Title (in English)  
Keyword(1) Break arc  
Keyword(2) Electrical contacts  
Keyword(3) High-speed camera  
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1st Author's Name Haruko Yazaki  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Junya Sekikawa  
2nd Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Speaker Author-1 
Date Time 2022-02-10 16:00:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # R2021-46, EMD2021-14 
Volume (vol) vol.121 
Number (no) no.368(R), no.369(EMD) 
Page pp.18-23 
#Pages 6 
Date of Issue 2022-02-03 (R, EMD) 

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