tender for work of residual life assesment test of old 20mva t/f at 220 kv s/s bah and 132 kv pinahat, agra - tan delta and capacitance measurement magnetizing current magnetic balance vector group test volatge ratio test winding resistance measurement insulation resistance measurement polarization index core insulation sweep frequency response analysis 2 testing of bushing cts (winding resistance, ir, polarity, ratio and knee point (for ps class only) test) 3 general oil test as per is 1866:2000(resistivity, tan delta, bdv, water,ppm, ift, acidity, flash point &sludge content etc.)dga as per relevant iec standard furan analysis