| Presentation | 2010-12-17 A Study on Lifetime and Reliability of Asymmetric Electrical Contact Pair Kazuaki MIYANAGA, Yoshiki KAYANO, Hiroshi INOUE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to develop the electrical contact with high reliability and long lifetime, it is necessary to examine the effects of heat on the phenomena of the arc discharge. Since the shapes of the fixed and moving electrodes of actual electrical relay are not symmetrical structure, the heat transfer on the fixed and moving electrodes have difference. The reliability and lifetime of the contact are influenced by heat transfers. In this paper, firstly, the effect of the number of operations on contact resistance and arc duration are discussed by changing the direction of the current flowing the contact on the electromagnetic relay with asymmetric structure. Secondary, the heat transfer of the moving and fixed electrodes are calculated, and the difference of the heat transfer resulting from the difference of the structure are discussed from the step response of the heat transfer. In the results, the arc duration and the contact resistance are different when the direction of the current is changed. When the high voltage is applied to the fixed electrode, the contact resistance and arc duration become smaller and shorter and have small variation. The response of the heat transfer of moving electrode is faster than that of fixed electrode. It is demonstrated that the contact lifetime becomes shorter when the electrode with small heat capacity is used in the high voltage side electrode. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | electrical contacts / contact resistance / arc discharge / heat conduction / thermal analysis |
| Paper # | EMD2010-131 |
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| Conference Information | |
| Committee | EMD |
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| Conference Date | 2010/12/10(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromechanical Devices (EMD) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Lifetime and Reliability of Asymmetric Electrical Contact Pair |
| Sub Title (in English) | |
| Keyword(1) | electrical contacts |
| Keyword(2) | contact resistance |
| Keyword(3) | arc discharge |
| Keyword(4) | heat conduction |
| Keyword(5) | thermal analysis |
| 1st Author's Name | Kazuaki MIYANAGA |
| 1st Author's Affiliation | Akita University() |
| 2nd Author's Name | Yoshiki KAYANO |
| 2nd Author's Affiliation | Akita University |
| 3rd Author's Name | Hiroshi INOUE |
| 3rd Author's Affiliation | Akita University |
| Date | 2010-12-17 |
| Paper # | EMD2010-131 |
| Volume (vol) | vol.110 |
| Number (no) | 350 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |