WEG Electric Motors has developed a new control regimen for standard totally-enclosed fan-cooled (TEFC) induction motors. Called OptimalFlux technology, the new regimen is ideal for use in driving loads that require constant torque over variable speeds, such as those encountered with compressors and conveyor belts. It enables a standard TEFC motor, powered by a WEG variable frequency drive, to operate at a much cooler temperature across its entire speed range -- particularly at low speeds where the integral fan no longer provides efficient cooling. OptimalFlux operation is now available as an option within any standard WEG CFW09 variably frequency drive and can be used with standard WEG NHE or NPE motors rated from 1 to 300 hp. The motor/drive combination is fully tested to meet all operating parameters before they leave the factory.