这是三相电动机保护模块程序，采用电能计量芯片采集三相电流有效值，能判断电动机启动和运行过程中的缺相、过载、轻载故障，运用了反时限算法，能很好的保护三相电机，也可以运用于其它电力参数的监控保护。(This is a three-phase motor protection module program, using electric energy metering chip collecting effective value of the three-phase current, can judge the motor starting and running process of the missing phase, overload, light load fault, using the inverse time algorithm to three-phase motor good protection, monitoring and protection can also be applied to the power parameters.)