... important part in EC Motor? motor driverElectronically commutated motors can be connected direct to AC mains and have little ... , hall-free, power,etc.Applications: External rotor motor, centrifugal fan, centrifugal blower, axial fan in HVAC,Tele-communication, refrigeration, clean room, ... , hall-free, power,etc. power,etc. 230V AC three phase electronically commutated ec fan motor driver controller