bids are invited for attending to break down calls for power supply intrruption of exchange - pdg physical inspection of substation accessories feeder panels etc testing with insulation tester and taking corrective measures for restoration the same , replacement of faulty or damaged pin insulators by new one of 11 kv grade - pin type insulator with large steel head gi pin nuts washers on existing ht pole or dp structure etc , replacement of faulty or damaged disc insulators by new one - 45 kn porcelain disc insulator with galvanized insulator fittings ball and socket type etc , dismantling the existing ratings faulty transformer from the existing dp structure or plinth - restoration for 50 hz aluminium wound oil cooled transformer by qualified electrician on existing load etc , repairing of burnt out transformer of existing rating with suitable size of primary and secondary winding etc - painting of complete outer body with double coat of transformer existing colour with mentioning of date of repair with white colour etc as required , to and fro transportation charges for spare or new or repaired or service 16 or 25 kva transformer - by using suitable transportation medium including loading and unloading at both ends etc complete as required total quantity : 128