摘要
求解了国际电工委员会 (IEC)火花试验装置电极间的分离速度 ,得到了开断电极间的电弧长度 ,用数值方法确定了电感性本质安全电路的动态伏安特性参数 .结果表明 ,在电感性本质安全电路的放电时间范围内 ,电极间的实际分离速度按正弦规律上升 ,最大可达 2 0 0 0 cm/s,而不是 2 5cm/s固定不变 .此外 ,还得到了电弧电阻的一种表达形式 ,以便用计算机模拟这种电路的弧光放电过程 .
The separating speed between two electrodes of International Electrotechnical Commission (IEC) spark-test apparatus was calculated, and the arc length between two separating electrodes was confirmed. Parameters of dynamic V-A characteristics of intrinsically safe (IS) circuits were determined by numerical method. The results show that in the scope of arc discharge time of IS circuits the separating speed between two electrodes increases sinusoidally, which has a maximum value of 2000 cm/s other than a constant value of 25 cm/s. Besides, a new type expression of arc resistance was established in order to simulate the course of arc discharge by using computer.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2001年第3期265-267,共3页
Journal of China University of Mining & Technology
基金
国家自然科学基金!资助项目 (5 0 0 770 2 2 )
