Power system dynamics are very difficult to quantitatively evaluate due to a variety of power system dynamics that can add to the harmful effects of dV/dt. Such components as line capacitance, parasitic capacitance, induced voltages and the like can intensify the voltage distortion on the line and contribute to the degradation of the motors insulation system. The V1K filter does an outstanding job of controlling these elements and bringing the distortion voltage down to a level that can be supported by the motors insulation system. Even standard electric motors can be used on drives with the V1K output filter.