小型断路器过电流试验温度过高改善  

Improvement of Miniature Circuit Breaker's Overcurrent Experiment

作　　者：罗宪庆 

机构地区：[1]松下信息仪器(上海)有限公司,上海201108

出　　处：《电器与能效管理技术》2014年第22期16-17,43,共3页Electrical & Energy Management Technology

摘　　要：某型号小型断路器在过电流脱扣特性试验中,由于温度过高,导致断路器内塑料件熔化,不能正常使用,严重影响产品性能。通过对产品进行过电流温度试验及分析,在控制产品成本不变的情况下,提出减小接触电阻的方案,改善温升过高。In an overcurrent tripping charateristic experiment of some miniature circuit breaker, high temperature often causes the melt of the plastic parts inside the breaker, so the breaker can not be used normally. It seriously affects the product＇ s performance. Based on the products overeurrent temperature experiment and its analysis,under the condition of unchanging the product cost, a scheme of reducing contact resistance was put forward which can prevent the product from overheating.

关 键 词：小型断路器 过电流脱扣特性试验 引弧角 静触头 动触头 接触电阻 

分 类 号：TM561[电气工程—电器]