How Variable Transformers Eliminate Harmonic Distortion from the Input Source
A variable transformer is a simple, rugged method of controlling electrical voltage, current, and power. This type of power regulator operates by absorbing utility line voltage and providing continuously adjustable output voltage. Typically, a variable transformer is used to obtain AC voltages different from the average 120 or 240 volts (single or three-phase supply), or to deliver test voltages from lines where the voltage fluctuates above or below the norm. No matter the application, your variable transformer should provide a specified power level to the load with minimal loss to the primary frequency.
Superior Electric POWERSTAT® Variable Transformers are designed with the technology to prevent it from “adding” or “eliminating” harmonic distortion, a feature that is ideal when applied to test equipment. No matter what THD (total harmonic distortion) is on the input source in your application, the POWERSTAT variable transformer will produce that same value in the output. The POWERSTAT variable transformer is a low impedance device, popular for features such as efficiency, versatility with various PF (power factor) loads, and it’s the ability not to affect your system’s harmonics.