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Paper Abstract and Keywords
Presentation 2019-03-01 14:00
Contact reliability of electrical contacts by continuous make/break test of electromagnetic contactor
Ikarashi Masanari, Ogaki Asuka, Koichiro Sawa, Kiyoshi Yoshida (NIT) EMD2018-67 Link to ES Tech. Rep. Archives: EMD2018-67
Abstract (in Japanese) (See Japanese page) 
(in English) In this research, we conducted 5 million times of opening and closing experiments with contacts under minute load conditions (DC 5 V, 3 mA). Then, change in contact resistance was measured. Two pairs of single contacts used for the main circuit and two pairs of twin contacts used as auxiliary contacts were attached to the electromagnetic contactor for the test contacts. Microscope and 3D laser microscope were used for observation of the contact surface after the experiment. Furthermore, 1 million times of opening and closing experiments were conducted to confirm the reproducibility of the experiment. As a result, the change in contact resistance was small in the opening and closing experiment of 5 million times. In both experiments, the contact resistance was as low as several tens mΩ even though it was high, and it was stable low. In one million experiments, experiments were conducted without polishing the surface. As a result, the contact resistance was lower and the contact resistance was lower in the 5 million times experiment with which the surface was polished. It was expected that the effect of initial contact surface condition will be large for micro loads without arc generation. Also, from the observation of the surface of the 3D laser microscope, it was confirmed that the contact surface was consumed due to collision by opening and closing both electrode.
Keyword (in Japanese) (See Japanese page) 
(in English) Electrical contact / Electromagnetic contactor / Single contact / Twin contact / Contact resistance / Auxiliary contact / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 462, EMD2018-67, pp. 41-46, March 2019.
Paper # EMD2018-67 
Date of Issue 2019-02-22 (EMD) 
ISSN Print edition: ISSN 0913-5685  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 EMD2018-67 Link to ES Tech. Rep. Archives: EMD2018-67

Conference Information
Committee EMD  
Conference Date 2019-03-01 - 2019-03-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EMD 
Conference Code 2019-03-EMD 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Contact reliability of electrical contacts by continuous make/break test of electromagnetic contactor 
Sub Title (in English)  
Keyword(1) Electrical contact  
Keyword(2) Electromagnetic contactor  
Keyword(3) Single contact  
Keyword(4) Twin contact  
Keyword(5) Contact resistance  
Keyword(6) Auxiliary contact  
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Keyword(8)  
1st Author's Name Ikarashi Masanari  
1st Author's Affiliation Nippon Institute of Technology (NIT)
2nd Author's Name Ogaki Asuka  
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 Kiyoshi Yoshida  
4th Author's Affiliation Nippon Institute of Technology (NIT)
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Speaker
Date Time 2019-03-01 14:00:00 
Presentation Time 15 
Registration for EMD 
Paper # IEICE-EMD2018-67 
Volume (vol) IEICE-118 
Number (no) no.462 
Page pp.41-46 
#Pages IEICE-6 
Date of Issue IEICE-EMD-2019-02-22 


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