| Presentation | 2007-07-27 A Measurement of Electromagnetic Noise up to Gigahertz Frequency Generated by Slowly Breaking Silver Contact (Part 5) : Effect of Operation Numbers on Noise Waveform Yoshiki KAYANO, Tatsuya NAKAMURA, Kazuaki MIYANAGA, Hiroshi INOUE, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | An arc discharge generated by breaking electrical contact is considered as a main source of an undesired electromagnetic (EM) noise. Since the EM noise disturbs other electric devices, EMC, as well as lifetime and reliability, are important parameters for evaluation of the electrical contact. In order to clarify effect of operation numbers on EM noise quantitatively, current and radiation noise up to gigahertz frequency generated by slowly breaking Ag is measured and discussed in this paper. The contact current at first operation is rapidly changed at the extinction of the arc discharge. Thus, peak of current noise arises at the extinction. On the other hand, as operation numbers increase, arc duration becomes longer rapidly. The contact voltage for the "long arc duration case" is the highest at beginning of metallic phase. Amplitude of current noise decreases 20dBμA at third operation number after arc duration becomes long. Then, current noise increases at fourth operation, and again decreases at fifth operation. So, effect of operation numbers is not a simple reduction. Arc discharge with long duration may cause much deterioration of surface of contact, and degree of deterioration is varied. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Current noise / operation number / Arc discharge / GHz band / Slow break |
| Paper # | EMCJ2007-38,EMD2007-24 |
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| Conference Information | |
| Committee | EMD |
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| Conference Date | 2007/7/20(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 Measurement of Electromagnetic Noise up to Gigahertz Frequency Generated by Slowly Breaking Silver Contact (Part 5) : Effect of Operation Numbers on Noise Waveform |
| Sub Title (in English) | |
| Keyword(1) | Current noise |
| Keyword(2) | operation number |
| Keyword(3) | Arc discharge |
| Keyword(4) | GHz band |
| Keyword(5) | Slow break |
| 1st Author's Name | Yoshiki KAYANO |
| 1st Author's Affiliation | Faculty of Engineering and Resource Science, Akita University() |
| 2nd Author's Name | Tatsuya NAKAMURA |
| 2nd Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| 3rd Author's Name | Kazuaki MIYANAGA |
| 3rd Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| 4th Author's Name | Hiroshi INOUE |
| 4th Author's Affiliation | Faculty of Engineering and Resource Science, Akita University |
| Date | 2007-07-27 |
| Paper # | EMCJ2007-38,EMD2007-24 |
| Volume (vol) | vol.107 |
| Number (no) | 168 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |