Paper Abstract and Keywords |
Presentation |
2013-03-01 15:35
Damage shape evaluation system of electrical contacts and investigation of material transfer and erosion phenomena Keisuke Takahashi, Daichi Kawamura, Yuya Hirano, Makoto Hasegawa (Chitose Inst. of Science and Tech.) EMD2012-118 Link to ES Tech. Rep. Archives: EMD2012-118 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Contact surfaces of mechanical relays and switches are often damaged by arc discharges and/or mechanical wear during switching operations. Conventionally, erosion and transfer characteristics of various contact materials under different load conditions have been mainly studied based on observation and evaluation of contact surfaces after switching operation tests. On the other hand, a further detailed study will become possible if we can observe and numerically evaluate a changing process of surface damages (especially, growth of a crater and/or a pip) on contact surfaces during switching operations. For that purpose, an evaluation system of contact surface damages which employs an optical cross-section method is being constructed. In this paper, Ag contacts and AgSnO2 contacts were operated to break a DC inductive 14V-2A or 3A load current for 50,000 operations, and changes of contact surface shapes were observed and numerically evaluated with this system during the switching operations. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Optical cross-section method / electrical contacts / arc discharge / material transfer / erosion / / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 453, EMD2012-118, pp. 37-40, March 2013. |
Paper # |
EMD2012-118 |
Date of Issue |
2013-02-22 (EMD) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
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EMD2012-118 Link to ES Tech. Rep. Archives: EMD2012-118 |