The EDFT results of power spectrum, power spectrum density and relative frequency resolutions of stator currents on time-frequency analysis have also been used for motor condition classification in this experiment. Fig. 8 shows The EDFT results of power spectrum on time-frequency analysis from broken rotor bars (Fig. 8-A) and 15 turn short circuit (Fig. 8B). Based on the experiment, the color shade from power spectrum, power spectrum density and relative frequency resolutions is difficult to transform to color indexes. Hence it is difficult to differentiate the motor condition.