Details: the following works are to be carried out for overhauling and maintenance of cooling fan of power transformer installed at various 220kv and 132kv sub-station under etd sitapur. genaral maintenance/servicing of heavy duty cooling fan of 200mva/160mva/ 100mva /63mva/40mva/20mva transformer having capacity 415 v, 50hz, 700rmp, 240 watt, 610mm sweep. the scope of work includes safe disconnection of electrical wiring of fan, removing case guard of colling fan, dismantling of fan motor from main structure from radiator, cleaning /oiling/ greasing/ lubrication of bearing, replacement of defective bearin/ bushes if required, replacement of wirn cut contacts if required, proper alignment of rotor shaft & fan wheel, proper sealing , changing of connections leads etc. the work also includes refitting/reinstallation back on radiatior structure, checking the performance of the fan after connecting the proper supply and starting/stopping of fan at desired setting and free from abnormal noise. all
Sector: Transmission