tender for repair/replacement of damaged components and rewinding of 250 kva transformer installed at lis kothey kalyana new. , repair/replacement of damaged parts of 250 kva electric sub-station installed at lift irrigation station kothey kalyana new by way of isolating of transformer from 11 kv ht supply, removing of ht cables and lt cables from the transformer. lifting of transformer from installed position using crane and carriage of transformer to road side from the lift irrigation station. shifting of transformer to workshop for repairs. completely dismantling the transformer after removing the top cover of transformer and extracting out the damaged lv and hv coils from the oil tank. complete rewinding of hv coils and reconditioning of lv coils using superior quality insulating material. providing and fitting of 4 nos lv bushes, 3 nos hv bushes, lv bush rod 4 nos, hv bush rod 3 nos, gasket set and nuts and bolts. repairs to the core of transformer by replacing the flashed core material. heating of assembled coils in oven for proper hot air process and to get required meager value. repair to oil tank by welding to make the oil tank leak proof and air tight. lowering the assembled coils in oil tank. filtering of existing transformer oil and topping up with 150 liters (approx) of fresh transformer oil. back shifting of the repaired transformer to the roadside at lis kothey kalyana new, then with the help of the crane to the lift station and then installation of the repaired transformer to its original position. complete job includes cost of material, labour charges, cost of oil, welding charges. note:- the tenderers are requested to visit the site and quote the rate as per site conditions. the firm should offer rebate on old material. , rebate on old parts