塑壳断路器可靠性理论与验证试验方法

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摘要塑壳断路器是广泛使用的低压电器之一, 其可靠性对用电设备和电网有重要影响。根据塑壳断路器的工作特点, 提出采用操作失效率、过载保护成功率、瞬动保护成功率作为其可靠性的考核指标, 并确定了采用失效率、成功率的两参数验证试验方案作为塑壳断路器的可靠性验证试验方案。本文分析了塑壳断路器操作可靠性试验、瞬动保护可靠性试验和过载保护可靠性试验, 提出过载保护可靠性试验应在规定的环境温度下进行, 以保证试验结果的准确性和一致性。分析了塑壳断路器可靠性试验时试品的检测内容, 特别是详细规定了试验中试品的检测方法和试验内容。介绍了塑壳断路器可靠性验证试验程序, 并结合实例, 确定了可靠性验证试验方案、试品数等。

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	陆俭国
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关键词 ：塑壳断路器, 可靠性验证试验, 验证试验程序

Abstract：Molded case circuit-breakers (MCCB) is one of the widely used low-voltage electric apparatus and its reliability has great influence on the electric equipment and the power grid. The operation reliability test, instantaneous protection reliability test and overload protection reliability test are analyzed in this paper. The reliability compliance test plan of MCCB is drawn out according to λ_max, β or R_min、β. That the overload protection test should be conducted under specified ambient temperature to ensure the accuracy and consistency of the test results is put forward. The test items of the sample in the reliability test of MCCB are analyzed and especially the test method and test items in the reliability test are specified. The test procedure of reliability test of MCCB is presented, and the reliability compliance test plan, the test sample numbers and so on are determined combined with practical examples.

Key words： Molded case circuit-breaker reliability compliance test procedure of compliance test

收稿日期: 2011-02-18 出版日期: 2014-03-20

PACS:

TM501.1

作者简介: 陆俭国男, 1936年生, 教授, 博士生导师, 主要研究方向为电器理论、电器可靠性理论、电器试验与检测技术。李奎男, 1965年生, 教授, 博士生导师, 主要研究方向为电器可靠性理论、电器试验与检测技术、电器智能化理论。

引用本文:

陆俭国, 李奎, 杜太行, 季慧玉. 塑壳断路器可靠性理论与验证试验方法[J]. 电工技术学报, 2012, 27(5): 180-185. Lu Jianguo, Li Kui, Du Taihang, Ji Huiyu. Reliability Theory and Test Methods of Moulded Case Circuit-Breakers. Transactions of China Electrotechnical Society, 2012, 27(5): 180-185.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I5/180

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