16. Sweep Frequency Response Analysis:

" Sweep Frequency Response Analysis Test or in short SFRA Test can detect efficiently, displacement of transformer core, deformation and displacement of winding, faulty core grounds, collapse of partial winding, broken or loosen clamp connections, short circuited turns, open winding conditions etc. It is recommend to perform the SFRA test after: - transformer transportation, heavy short circuit faults, transient switching impulses and lightening impulses etc.