AC Drives (VFD-Variable Freq Drive) are used to control speed of motors. Speed control of motor may be necessity of process or it is done for energy saving. These are used for speed control of Pumps, Blower, Agitator, Conveyors etc. AC Drive panels are properly ventilated to take out heat generated by VFDs. Proper size chokes are provided on input & output side ofVFD as required.