Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于关键试验的断路器质量改进方法研究

来源:电工电气发布时间:2019-11-19 11:19 浏览次数:539
基于关键试验的断路器质量改进方法研究
 
丛林1,范学铭2,信天1,赵毅1
(1 山东省产品质量检验研究院,山东 济南 250102;2 中国质量认证中心,北京 100070)
 
    摘 要:塑料外壳式断路器(MCCB)广泛应用于输配电和供电用电系统中,起保护作用。在GB/T 14048.2—2008国家标准中,规定了断路器的基本要求和试验方法,介绍了MCCB的脱扣极限和特性及额定极限短路分断能力两个关键试验,结合产品质量监督抽查检验结果,对断路器质量问题进行了分析,绘制了用于质量改进方法研究的排列图,为进行断路器质量改进和性能优化及其可靠性研究提供了理论依据,实例验证表明,该方法是有效可行的。
    关键词:断路器;脱扣极限和特性;额定极限短路分断能力;质量改进;排列图
    中图分类号:TM561     文献标识码:A     文章编号:1007-3175(2019)11-0049-04
 
Research on Circuit Breaker Quality Improvement Method Based on Critical Test
 
CONG Lin1, FAN Xue-ming2, XIN Tian1, ZHAO Yi1
(1 Shandong Institute of Inspection on Product Quality, Jinan 250102, China;2 China Quality Certification Center, Beijing 100070, China)
 
    Abstract: MCCB is widely used in power transmission and distribution of electricity and power supply system. It is the main component of circuit protection. GB/T 14048.2-2008 provides the basic requirements and test methods for circuit breaker. This paper focused on two key tests of tripping limit and characteristics, rated limit and short-circuit breaking capacity of MCCB. The quality problems were analyzed according to the inspection results of product quality supervision and spot check. A pareto diagram for the study of quality improvement method was presented, which provides a theoretical basis for the quality improvement, performance optimization and reliability study of the circuit breaker. An example shows that this method is effective and feasible.
    Key words: circuit breaker; trip limit and characteristic; rated ultimate short-circuit breaking capacity; quality improvement; pareto diagram
 
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