Electronically Commutated (EC) means a fan that has a brushless, permanent magnet Dc motor with onboard electronics available for controlling a fan rotor. EC Technology stands for Electronically Commutated and combines AC and DC voltages, which is essentially a fan with a brushless DC motor, bringing the best of both technologies. The EC motor is running on a DC voltage but with a single phase 230 Volts AC supply (115 Volts option).
An electronically commutated (EC) fan design delivers the combined benefits of AC and DC Fans. The EC fan’s power comes from a brushless DC motor, but it offers the control that AC induction fans have over the fan rotor through a printed circuit board. The EC (electronically commutated) motor is a synchronous motor powered by an inverter with permanent magnets in an external rotor design. The stator is driven by electronic switches controlled by a microcontroller.
Ultimately, EC fans are the more efficient fan technology. Cooling Unit Type VSDs are particularly well-suited for larger systems with ducted upflow cooling units that require higher static pressures, while EC fans are better suited for downflow units. Maintenance In terms of maintenance, EC fans offer an advantage.
