... 3.CCC,CE,VDE,RoHS 1,YWF series axial fan motors are external rotor fan motors with the characteristics of compact structure, ... 2,They are divided into singlephrase asynchronous capacitor fan motor and threephrases asynchronous fan motor which are widely used in condenser, evaporator ... cycle areas. 3,The insulation class of the YWF series axial fan motors is B, and the protection class of that ...