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Paper Abstract and Keywords
Presentation 2026-08-27 13:05
Influence of Geometrical Variations of Electrical Contacts with an Airflow-Blowing Structure on Break Arc Duration
Yosei Terazawa, Junya Sekikawa (Shizuoka Univ.) R2026-18 EMD2026-9 CPM2026-21 OPE2026-51 LQE2026-10
Abstract (in Japanese) (See Japanese page) 
(in English) In a resistive load circuit with a DC supply voltage of 100 – 250 V and a circuit current of 10 A, a pair of silver contacts equipped with an airflow-blowing mechanism was separated at a constant speed of 1 m/s to generate break arcs. Experiments were conducted with supply voltages of 100, 150, 200, and 250 V. In addition, two types of anode contacts with different airflow outlet geometries were used. The arc duration, arc voltage waveform, and arc motion characteristics observed by two high-speed cameras were investigated, and the following results were obtained. For both contact geometries, the airflow-blowing effect reduced the arc duration at supply voltages of 100 and 150 V. At 200 V, no reduction effect was observed for Contact A, whereas a reduction in arc duration was obtained in some cases for Contact B. At 250 V, no reduction effect was observed for either contact geometry. The cathode spot of the break arc moved from the contact surface to the side surface of the contact owing to the airflow blowing effect.
Keyword (in Japanese) (See Japanese page) 
(in English) Break arc / Electrical contacts / High-speed camera / / / / /  
Reference Info. IEICE Tech. Rep., vol. 126, no. 152, EMD2026-9, pp. 1-6, Aug. 2026.
Paper # EMD2026-9 
Date of Issue 2026-08-20 (R, EMD, CPM, OPE, LQE) 
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 R2026-18 EMD2026-9 CPM2026-21 OPE2026-51 LQE2026-10

Conference Information
Committee EMD R LQE OPE CPM  
Conference Date 2026-08-27 - 2026-08-28 
Place (in Japanese) (See Japanese page) 
Place (in English) Muroran Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Photodetectors, Modulators, Optical Electrical device packaging and reliability 
Paper Information
Registration To EMD 
Conference Code 2026-08-EMD-R-LQE-OPE-CPM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Influence of Geometrical Variations of Electrical Contacts with an Airflow-Blowing Structure on Break Arc Duration 
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 Yosei Terazawa  
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 2026-08-27 13:05:00 
Presentation Time 25 minutes 
Registration for EMD 
Paper # R2026-18, EMD2026-9, CPM2026-21, OPE2026-51, LQE2026-10 
Volume (vol) vol.126 
Number (no) no.151(R), no.152(EMD), no.153(CPM), no.154(OPE), no.155(LQE) 
Page pp.1-6 
#Pages 6 
Date of Issue 2026-08-20 (R, EMD, CPM, OPE, LQE) 

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