Variable Frequency Drives, DC drives, SCR drives and Rectifier drives for motors are some of the names for devices that require Line Reactors. These are grouped together and termed Adjustable Speed Drives (ASDs) to encompass any type of drive for a motor which changes the output speed. This happens because the current waveform is changed, creating a non-sinusoidal waveform. Our Line Reactors are sized so that they can be used on the input and the output side of drives.