Diagnostics of Difference Parameters of Transformer Winding in Time and Frequency Domain

In the 1-st part of article is presented theory about diagnostic methods for transformer construction (winding, taps and feromagnetic core). In the 2-nd part of article is presented experimental analysis of fault in winding of transformer by means of method of impact test and frequency response analysis (SFRA). For transformer diagnostics and analysis of winding quality are very important these methods by measurement in time and frequency domain using by impact test and method SFRA. Differences between measured frequency curves are analyzed by value of relative factor Rxy.