Yes, low-frequency drying is especially suitable for large power transformers with a high mass of cellulose insulation, and in fact this is one of the cases where LFD shows its main advantage. Because the windings are heated internally by low-frequency current, the heat is generated directly inside the thick paper layers, where moisture diffusion is slow in conventional ovens. This gives much more uniform and effective drying than external heating. The limitation is time and power availability: for very large units the process can take many days and requires careful temperature control, but technically it is one of the most efficient methods for deep drying of massive insulation systems.