摘要
直流电弧的静态电压电流特性是研究触点最小燃弧电压、最小燃弧电流、燃弧时间和触点开距的重要依据。本文首先阐述了电弧稳定燃烧点的确定方法,并分析了负载电阻、电动势及电感元件等因素对电弧电压电流特性及稳定燃烧点的影响,为全面掌握开关电器熄弧原理与熄弧条件奠定了基础。
The voltage-current characteristics of the stationary DC arc could be used for determination of the minimum arc voltage,the minimum arc current,arc durations and contact gap.In this paper,the method for determination of the stable arcing point is presented,and the effect of contact resistance,electric potential and the inductance on the V-I characteristics and the stable point are analyzed.It is the valuable in understanding the arc quenching theory and conditions for electric apparatus.
出处
《电气电子教学学报》
2010年第S1期41-43,共3页
Journal of Electrical and Electronic Education
基金
哈尔滨市科技创新人才研究专项资金项目(2008RFQXG043)
哈尔滨工业大学优秀青年教师培养计划资助HITQNJS.2009.024
关键词
直流电弧
稳定燃烧点
静态电压电流特性
熄弧
DC arc
stable arcing point
stationary voltage-current characteristics
arc quenching
