Visit www.sesk-u.com to learn more about SESK University! So to put a simply a VFD is a type of motor controller that drives a three phase electric motor, and it can control the motor by varying, not only the frequency but the voltage that's being supplied to the electric motor. Okay? So one of the coolest things about VFD's is that their automatic. You don't have to sit there and monkey around with them and adjust them when you need certain things to happen, they sense the load requirements and then they increase or decrease the motor speed accordingly. So this helps out in a couple of different ways. It helps reduce operating temperature of the equipment. It also helps reduce stress on the mechanical components.

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