| 6kV电机四星带间隙组合式过电压保护器的选型与试验 |
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| 引用本文： | 董国华.6kV电机四星带间隙组合式过电压保护器的选型与试验[J].电瓷避雷器,2006(5):39-41. |
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| 作者姓名： | 董国华 |
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| 作者单位： | 阳江核电有限公司,广东,阳江,529500 |
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| 摘 要： | 从真空开关操作过电压导致高压电动机绝缘损坏的机理着手,分析了过电压保护器应具备的条件,确定了较常用的带串联间隙四星形过电压保护器的选型、安装、定期试验方法及注意事项。认为,避雷器额定电压的选择应不小于9.94kV;避雷器持续运行电压的选择应大于最高运行线电压即7.2kV,并小于工频放电电压值;避雷器残压值的选择应低于15.9kV;工频放电电压的选择值根据负载不同,应在9.3kV～12.48kV。
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| 关 键 词： | 带串联间隙四星形过电压保护器 避雷器额定电压 避雷器持续运行电压 避雷器工频放电电压 |
| 文章编号： | 1003-8337(2006)05-0039-03 |
| 收稿时间： | 2006-07-06 |
| 修稿时间： | 2006年7月6日 |
The Designing and Experiments for 6 kV Four-star Shaped Surge Protector with Series Gap for Motor Protection |
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| DONG Guo-hua.The Designing and Experiments for 6 kV Four-star Shaped Surge Protector with Series Gap for Motor Protection[J].Insulators and Surge Arresters,2006(5):39-41. |
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| Authors: | DONG Guo-hua |
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| Affiliation: | Yangjiang Nuclear Power Corperation, Yangjiang 529500, China |
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| Abstract: | Based on mechanism of HV motor insulation fault due to surges caused by vacuum switch,the specification for surge protection(SP) was evaluated and the guidance for designing,election,periodic maintenance for popular four-star shaped surge protector with series gap was determined.It is considered that the SP rating shall be 9.94 kV,Ucov shall be 7.2 kV,more than maximum line-to-line operating voltage and lower than power frequency flashover voltage,residual voltage of SP shall be less than 15.9 kV,and the power frequency spark-over voltage being 9.3 kV～12.48 kV depending on different duty. |
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| Keywords: | four-star shaped surge protector with series gap SP rating residual voltage PF sparkover voltage |
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