现有一台AEG电机（Motor Data TYPE AM 400 LP6）控制对象为风机，AEG电机上有2个铭牌，参数如下： 1)Main Operation: Pn = 400 kW Un = 380 V In = 715 A Nn = 994 rpm Fn = 50 Hz Ia/In = 5.8 Io = 215 A 2)Convert Operation: P = 350 kW Umax = 380 V I = 670 A Nmin = 100 rpm Nmax = 990 rpm Fmin = 5 Hz Fmax = 50 Hx 请教上述2个参数的意义，另外是否可选西门子6SE71系列400KW变频器（电流为690A）的产品。