本质安全电路低能电弧放电特性及参数

Low Energy Arc Discharge Characteristic and Parameters of Intrinsically Safe Circuits

实验发现电感性本质安全电路的动态伏安特性为直线，其斜率与电路电感成线性关系，由此推导出放电电压、电流的解析表达式。指出放电时间与电路时间常数以及电感和稳态电流的乘积相关。得到电弧电阻的表达式，为非爆炸方法评价电路本质安全性能提供理论依据。

It is found that are discharge dynamic V-A charateristics of inductive intrinsically safecircuits is a line and the relation betwee its slope and the value of inductance is linearity. The analgticalerpressions of arc discharge current and voltage is then deduced. It points out that arc discharge time isrelated to cireuit time constant and the product of inductance and static crrrent. The analytical. expression isgained which form the theoretical basis for non-explosion assessing intrinsic safety method.