摘要
针对触头材料的寿命预测主要基于磨损量和电流的关系,提出一种新的触头材料电寿命诊断预测方法,即通过分合电路操作过程中的电弧电流的时序特征变化来预测剩余寿命。对AgSnO2,AgNi10,AgNi0.15三种触头材料进行了寿命试验,采样了电流、电压信号并分析了分断燃弧时间、接触电阻等参数。
Aiming at that endurance prediction of electric contact is mostly based on the relation between erosion degree and current, a new endurance of electric contact diagnosis and prediction method that contact lifetime was predicted by time sequence characteristic of arc current in the breaking/making process was presented. So endurance tests of three contact materials AgSnO2, AgNi10, AgNi0. 15 were done. Signal of current/voltage were sampled. Arc duration of breaking currents and contact resistance were discussed.
出处
《低压电器》
北大核心
2008年第1期14-17,21,共5页
Low Voltage Apparatus
基金
国家自然科学基金项目资助(50477044)
关键词
电触头
寿命预测
电流波形
electrical contact
endurance prediction
current waveform
