Ec Motor (Ecm) Technology by Rosenberg Fans

about ec technology: ec (electronically commuted, or electronically controlled) motors are electric motors which have permanent magnets on the rotor and use electronics to control the voltage and current applied to the motor. ec motors advantages: ec motors are very high efficiency and maintain a high-efficiency level at part speed. this means that in most cases they use from less than one third to one half of the electricity used by the traditional "shaded pole" induction motors used in the ventilation and refrigeration industries, which in turn translates into lower operating costs and short payback periods. ec motors’ high efficiency also means that the motors run “cool”, and dramatically reduce the amount of waste heat produced. reduced waste heat at the evaporator motor level also typically results in reduced operation at the compressor level, which allows further energy savings. further, running cooler improves the life of highly loaded motor parts like windings and bearings.