| Reliability testing and reliability analysis of the over-load protective relay |
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| 作者姓名： | ZHAO Jing-ying CHEN Hong-jian LIU Guo-jin ZHANG Yong WU Pin-hua |
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| 作者单位： | ZHAO Jing-ying1，2，CHEN Hong-jian2，LIU Guo-jin1，2，ZHANG Yong1，WU Pin-hua1 (1Postdoctoral Research Work Station，Delixi Group Co.，Ltd，Wenzhou 325604，China) (2Electrical Apparatus Institute，Hebei University of Technology，Tianjin 300130，China) |
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| 基金项目： | Project (No. E2005000039) supported by the Natural Science Foun-dation of Hebei Province, China |
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| 摘 要： | The over-load protective relay is widely used for motor protection. The reliability of the over-load protective relay directly affects the safe running of a motor. The reliability testing and reliability analysis of the over-load protective relay is an important way to improve the reliability of products. In this paper, the reliability test method of the over-load protective relay is studied, and the reliability tests of the typical products are carried out on a reliability tester developed by authors. In terms of the testing results, the reliability analysis is finished. The failure reasons are found and the measures are put forward to improve the reliability of the products.
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| 关 键 词： | 超负荷保护继电器 防护成功分析比率 可靠性测试 电子技术 |
| 收稿时间： | 2006-12-19 |
| 修稿时间： | 2007-01-05 |
Reliability testing and reliability analysis of the over-load protective relay |
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| ZHAO Jing-ying CHEN Hong-jian LIU Guo-jin ZHANG Yong WU Pin-hua.Reliability testing and reliability analysis of the over-load protective relay[J].Journal of Zhejiang University Science,2007,8(3):475-480. |
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| Authors: | Jing-ying Zhao Hong-jian Chen Guo-jin Liu Yong Zhang Pin-hua Wu |
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| Institution: | (1) Postdoctoral Research Work Station, Delixi Group Co., Ltd, Wenzhou, 325604, China;(2) Electrical Apparatus Institute, Heibei University of Technology, Tianjin, 300130, China |
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| Abstract: | The over-load protective relay is widely used for motor protection. The reliability of the over-load protective relay directly affects the safe running of a motor. The reliability testing and reliability analysis of the over-load protective relay is an important way to improve the reliability of products. In this paper, the reliability test method of the over-load protective relay is studied, and the reliability tests of the typical products are carried out on a reliability tester developed by authors. In terms of the testing results, the reliability analysis is finished. The failure reasons are found and the measures are put forward to improve the reliability of the products. |
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| Keywords: | Over-load protective relay Protective success ratio Sampling and checking plan Reliability testing Reliability analysis |
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