ac evaporator YWF axial fan motor from YWF250 to YWF710 1)Volt:220V/380V 2)Frequency:50/60Hz 3)speed:1300/1550RPM ac evaporator YWF axial fan motorYWF250,YWF300,YWF350,YWF400,YWF450,YWF500,YWF630,YWF7101)220/380V,50/60HZ,1320-1380RPM2)Single phase,three phase.3)sucking or blowing.4)2 poles,4 poles,6 poles