When the PFC senses a light load, it cuts the voltage level given to the motor to the minimum needed which in turn reduces current flow and heat loss.
Energy use is regulated according to how many people are on the escalator at any time.
It is estimated that the energy savings are between 30 and 40 percent. The PFC was developed by NASA engineer Frank Nola in the course of NASA's Solar Heating and Cooling Program to curb the waste of power. For more information please enter your email address and click the Request Information button.