| Presentation | 2005-12-09 Prediction malfunction area map of telecommunication systems due to lightning surge Tetsuya TOMINAGA, Nobue AOKI, Kimihiro TAJIMA, Hiroshi YAMANE, Ryuichi KOBAYASHI, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | With the increasingly popularity of the Internet, the class of communications machinery has grown to include network appliances, i.e., computer peripherals, etc., as well as conventional telephones. The components of such network appliances become more sensitive to lightning-induced surges as the devices become faster and use broader bandwidths. These communications devices are also connected to home electrical appliances, including dedicated computers, which are connected with the AC power supply. The routes along which lightning-induced surges flow are thus complex. We investigated recent experiences of failures to clarify this problem. We used the results of this investigation in proposing a way of assigning lightning-damage hazard levels to the cells of a 5-km grid. We used this to propose ways in which the efficiency and emphasis of countermeasures could be improved, and to make a map of the hazard levels. We also describe a way to predict daily numbers of lightning-induced faults, which is applicable to the concentrated incidence of lightning-induced failure in summer. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Lightning / Malfunction / Telecommunication equipment |
| Paper # | EMCJ2005-122 |
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| Conference Information | |
| Committee | EMCJ |
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| Conference Date | 2005/12/2(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Electromagnetic Compatibility (EMCJ) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Prediction malfunction area map of telecommunication systems due to lightning surge |
| Sub Title (in English) | |
| Keyword(1) | Lightning |
| Keyword(2) | Malfunction |
| Keyword(3) | Telecommunication equipment |
| 1st Author's Name | Tetsuya TOMINAGA |
| 1st Author's Affiliation | NTT Environment and Energy Labs.() |
| 2nd Author's Name | Nobue AOKI |
| 2nd Author's Affiliation | NTT Environment and Energy Labs. |
| 3rd Author's Name | Kimihiro TAJIMA |
| 3rd Author's Affiliation | NTT Environment and Energy Labs. |
| 4th Author's Name | Hiroshi YAMANE |
| 4th Author's Affiliation | NTT Environment and Energy Labs. |
| 5th Author's Name | Ryuichi KOBAYASHI |
| 5th Author's Affiliation | NTT East Maintenance and Services Operation Department |
| Date | 2005-12-09 |
| Paper # | EMCJ2005-122 |
| Volume (vol) | vol.105 |
| Number (no) | 454 |
| Page | pp.pp.- |
| #Pages | 5 |
| Date of Issue | |