Paper Abstract and Keywords |
Presentation |
2018-11-09 14:25
Characteristics of arc duration at breaking contacts for low DC current with magnetic blow-out effect Kiyoshi Yoshida, Kenta Mano, Koichiro Sawa (NIT), Kenji Suzuki (Fuji Electric FA Components & Systems) EMD2018-43 Link to ES Tech. Rep. Archives: EMD2018-43 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
It is well-known that magnetic blow-out is an very useful method to extinguish quickly arc discharge at interrupting DC load current. Using this method, arc column is pulled out apart from contact gap by Lorentz force and disappears quickly. Therefore, very short contact gap is only needed. However, it is reported that arc duration at small DC current becomes longer than that at larger current.
In this report, we carried out two experiments. The first is about the magnitude of flux density applied and the effect of contact opening speed on arc duration. The second is at the current range of less than 30A the relation between arc duration and closed circuit current is investigated for silver Ag and tungsten W contacts. Consequently, arc duration becomes the minimum value at the current of 10A for Ag and W contacts and magnetic blow-out 10mT. Further the arc duration becomes very long around the current 3A, and in means that the magnetic blow-out is not effective at such low current. On the other hand, with the magnetic blow-out 25mT, the arc duration has the minimum value around 10A, but the difference of arc duration at the range of 1A to 30A is not large and the arc duration is short compared with the case of 10mT. It suggests that the magnetic blow-out is effective at the whole range of tested current. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Electrical contacts / Arc discharge / Arc duration / Arc energy / Magnetic blow-out / DC interruption / / |
Reference Info. |
IEICE Tech. Rep., vol. 118, no. 290, EMD2018-43, pp. 13-19, Nov. 2018. |
Paper # |
EMD2018-43 |
Date of Issue |
2018-11-02 (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) |
Download PDF |
EMD2018-43 Link to ES Tech. Rep. Archives: EMD2018-43 |
Conference Information |
Committee |
EMD |
Conference Date |
2018-11-09 - 2018-11-09 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
The University of Electro-Communications |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
International Session IS-EMD2018 |
Paper Information |
Registration To |
EMD |
Conference Code |
2018-11-EMD |
Language |
English (Japanese title is available) |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Characteristics of arc duration at breaking contacts for low DC current with magnetic blow-out effect |
Sub Title (in English) |
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Keyword(1) |
Electrical contacts |
Keyword(2) |
Arc discharge |
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Arc duration |
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Arc energy |
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Magnetic blow-out |
Keyword(6) |
DC interruption |
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1st Author's Name |
Kiyoshi Yoshida |
1st Author's Affiliation |
Nippon Institute of Technology (NIT) |
2nd Author's Name |
Kenta Mano |
2nd Author's Affiliation |
Nippon Institute of Technology (NIT) |
3rd Author's Name |
Koichiro Sawa |
3rd Author's Affiliation |
Nippon Institute of Technology (NIT) |
4th Author's Name |
Kenji Suzuki |
4th Author's Affiliation |
Fuji Electric FA Components & Systems (Fuji Electric FA Components & Systems) |
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Speaker |
Author-1 |
Date Time |
2018-11-09 14:25:00 |
Presentation Time |
25 minutes |
Registration for |
EMD |
Paper # |
EMD2018-43 |
Volume (vol) |
vol.118 |
Number (no) |
no.290 |
Page |
pp.13-19 |
#Pages |
7 |
Date of Issue |
2018-11-02 (EMD) |
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