继电器控制电动机负载的电寿命试验条件  

Electrical Life Test Requirement for Relay Controlling Motor Load

作　　者：杜太行[1] 曲炳锋[1] 王晓义[1] 董志然[1] 

机构地区：[1]河北工业大学电气与自动化学院,天津300130

出　　处：《低压电器》2007年第19期13-17,共5页Low Voltage Apparatus

摘　　要：从电弧理论的角度建立了继电器触点电气特性的数学模型。通过动态特性分析,建立了典型单相双值电容异步电动机的仿真模型。通过仿真与实际测量得出继电器控制该类电动机负载的试验条件。基于I2t能量不变原则,阐述了起动试验电流(6IN)持续时间的计算方法。The mathematical model of relay contact electrical characteristic was established according to the arc theory.By dynamic characteristic analysis,the simulation model of the typical single-phase double value capacity asynchronous motor was established.The test condition of relay controlling this kind of motor load was gotten by simulation and actual survey.Based on the I^2t energy invariability principle,the computational method of start experiment current(6I_N) duration was elaborated.

关 键 词：继电器 试验条件 仿真 单相异步电动机 

分 类 号：TM58[电气工程—电器]