Tender For providing of operation and maintenance of substation - rewinding, overhauling & servicing of 3 phase 440 volt 0.5 hp capacity cooling fans of power transformers. the work includes dismantling of cooling fans from the transformers, its carriage to repair workshop ..,operation and maintenance of substation - overhauling,operation and maintenance of substation - attending defect of fan automated running by identifying defective parts/ wiring, replacement of defective parts, cleaning & tightening of wiring etc. (spare parts to be provided by department)