repairing / reconditioning of 16 / 20mva, 33 / 11kv power transformer repairing / reconditioning of 16 / 20mva, 33 / 11kv power transformer manufactured and supplied by toshiba transmission and distribution system ltd. bearing sr. no. 2001388 at 33kv parel receiving sub station , labour & material charges ( excluding copper material ) : , to & fro transportation of transformer with accessories including insurance, loading / unloading between undertaking site and contractor’s site , removing top plate, disconnecting oltc gear, conservator and buchholz relay etc and taking out, putting back core coil assembly in original position for inspection , dismantling of hv windings , dismantling of lv windings , dismantling of the core assembly , cleaning and painting of transformer tank from inside and outside as per specification , cleaning and painting of conservator tank from inside and outside as per specification , replacement of the damaged / defective core laminations , reconditioning of the damaged / defective core laminations , replacement of core bolts with insulation , replacement of only insulation of the core bolts , reassembly of the core , replacement of hv winding by using new conductor and insulation ( labour charges only ) , replacement of lv winding by using new conductor and insulation ( labour charges only ) , overhauling and repairs of on load tap changer, oltc mechanism overhauling. the oltc shall be made mechanically and electrically through , dehydration of the assembled core and windings in an oven under vacuum , assembly of accessories such as conservator tank, hv and lv bushings, radiators, associated pipings etc for carrying out final testing at the works. , cost of new transformer oil to be replaced , routine / acceptance tests as per is 2026-1977 and as per annexure-vii , heat run test , replacement of all gaskets , copper material charges ( hv & lv winding with leads ) : , hv winding , lv winding , hv leads , lv leads , tap winding leads , credit part: , credit for copper parts , credit for existing transformer oil, if it is replaced by new , credit for replaced m. s. hardware , credit for replaced brass components / accessories , other items which may required to be replaced: , complete oltc , oil level gauge , radiator valves , filter valve 50mm , filter valve 80mm , filter valve 100mm , drain valve 50mm , drain valve 80mm , drain valve 100mm , sampling valves , conservator valves , bi-directional flanged rollers , buchholz relay for main tank , winding temperature indicator , oil temperature indicator , osr for oltc , magnetic oil level gauge , breather for main tank , breather for oltc tank , radiators- repairing / testing , pressure relief valve , marshalling box - fabrication, wiring & electrical components , any other item such as oltc parts etc. which are not mentioned above: , cover gasket , all type of oil seals and air release plugs , fixed contact with fixing materials , moving contact with fixing materials , terminal board assembly , transition resistance unit assembly for 3 phase , tpi assembly , motor for drive mechanism , door gasket , local remote control selector switch , limit switch raise , limit switch lower , terminal block 6 sqmm , mechanical counter , m.s. handle ( for manual operation ) , motor protective relay , installation, commissioning / retrofitment charges: , installation, re-termination, commissioning & testing of transformer at 33kv, parel receiving sub-station ( rss ) , nitrogen injection fire protection system: , supply of nifp system , retrofitting, installation, commissioning & on-site testing of nifp system