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