tender for the work of centrifuging of t/f oil of 20mva transformer at 400 kv substation kasara , mau.; 2 draining of transformer oil from main tank 31.5mvar reactor to empty oil drums making all arrangement. 3 draining of transformer oil from main tank 20mva t/f to empty oil drums making all arrangement. 4 create the vacuum inside the transformer tank and sustain it for 24 hrs.filling the oil step by step in 20 mva 132/33kv transformer. 5 testing of partial discharge (pd) 400 kv s/s division kasara-mau 6 centrifuging of old and used transformer oil of 20mva transformer, 132/33kv with 12kl centrifuging machine and recording all parameters hourly after opening the valve of radiator and conservator tank till the satisfactory results obtained. also providing oil test report (bdv & ppm) from government approved lab.