Application of frequency method for analysis of power auto transformers

Article presents experimental analyses of power transformers by two frequency methods. The first part of article deals with the possibilities of diagnostics for power transformers. The second part of article deals use method of frequency domain spectroscopy (FDS) for condition analyse of equipment. Finally, the article presents experimental measurements of diagnostics for analysis of four identical power autotransformers 231/121/10.6 kV.