This article evaluates a 3-5 kHz electrothermal method for removing ice from AC-240/39 overhead-line conductors and validates the corresponding transient model against experimental data. The approach applies a frequency- dependent current through a coupling and filtering subsystem so that heat is generated near the conductor surface and at the conductor-ice interface. The governing formulation combines Joule heating, convective and radiative heat losses, conductor and ice thermal inertia, and latent heat during phase change. Validation was performed for ice thicknesses of 5, 10, 15, and 20 mm and for ambient temperatures from -5 to -15 °C. For five temperature-validation conditions, the model produced an RMSE of 0.127 °C, an average absolute relative error of 4.49%, and R²=0.990. For predicted de-icing time, the RMSE was 1.47 min, the mean absolute percentage error was 4.11%, and R²=0.990. The measured de-icing duration increased from 13 min at 5 mm to 52.5 min at 20 mm.
The results demonstrate close agreement within the investigated conditions. The reported energy comparison is interpreted cautiously because cycle energy depends on treated line length, generator duty cycle, coupling efficiency, and the definition of complete ice removal.