What is Sweep Frequency Response Analysis Test ?SFRA Test DefinitionSFRA test of transformer is a method used to assess the condition of transformer windings by analyzing their frequency response to electrical inputs.Purpose of SFRA testing Assessing the mechanical integrity of windings: Detecting whether the windings are displacements, deforms or short circuits. Monitoring the health of the transformer:Changes in the condition of the transformer windings can be tracked by comparing historical d