tender for a)partial repairing, oil filtration and dehydration of marsen electrical pvt. ltd., 500kva, 11kv/550v lighting transformer sl. no. 15728 install at chp-1 of docp , supply of primary incoming copper stud, nut and washer complete set , supply of secondary outgoing copper stud, nut, and washer complete set , supply of synthetic gasket for top cover, inspection cover with insulator , supply of missing and damaged nut, bolt, washers with lock washer-04 sets , labour charges for complete cleaning, fitting of gasket with fitting of top cover, inspection cover and insulator , oil filtration and dehydration (by 3 kl oil filteration machine) , b)partial repairing, oil filtration and dehydration of kirlosakar make, 500kva, 11kv/550v lighting transformer sl. no. 811d-141/520 install at chp-c of docp , supply of primary incoming copper stud, nut and washer complete set , supply of secondary outgoing copper stud, nut, and washer complete set , supply of synthetic gasket for top cover, inspection cover with insulator , supply of missing and damaged nut, bolt, washers with lock washer-04 sets , labour charges for complete cleaning, fitting of gasket with fitting of top cover, inspection cover and insulator , oil filtration and dehydration (by 3 kl oil filteration machine) , c)oil filtration and dehydration of compton parkinson make 400kva, 550/440v lighting transformer si. no. docp/trans/011 install at chp-a of docp , oil filtration and dehydration (by 3 kl oil filteration machine) , d)complete repairing and rewinding of 50kva-550/440v sl. no. docp/e&m/trans/11 lighting transformer of damagoria colliery. , dismantling of core and winding from the tank and cleaning of all parts properly and cooling pipe, etc. , cost of copper conductor for primary coil , cost of dpc for primary coil , cost of copper conductor for secondary coil , cost of dpc for secondary coil , cost of insulting materials, varnish, cotton tape, numin paper, etc. , cost of brazing rod, oxygen, da , provid