annual maintenance contract for 400 / 132kv switchyard equipment , generator , excitation systemtransformers , electrical lab , davr at ntpp , amc for 400 / 132kv switchyard equipment , power transformer daily check ( 16-315 mva , switch yard daily check , generator & auxiliary checks , scada system , abt system , davr system che , lt transformer 1w check ( up to 16 mva ) , pm of power transformer ( 16-315 mva ) , pm of lt transformer ( upto 16 mva ) , pm of generator / excitation / bus duct / drie , power transformer ( 16-315 mva ) accessorie , lt transformer ( up to 16 mva ) accessories , transformer oil top up , oil sample ( tfr oil ) collection , oil sample ( transformer oil ) transportati , oil filtration machine / dry air generator , power transformer 48w check / oh / testing , lt transformer 48w check / oh / testing , generator / excitation / grp 48w check / oh / te , power transformer oil filtration , transformer dismantling , lt transformer oil filtration ( up to 16 m , transformer internal inspection , transformer shifting , bushing ( ehv ) replacement , material misc . transportation , assistance in testing , conductors connection , breakers ( 400kv ) gas filling , ct / cvt ( 400 / 132 kv ) attend defect / oh / t , circuit breaker ( 400 / 132 kv ) attend def , isolator / earth switch ( 400 / 132 kv ) atte , poles ( 400 / 132 kv ) replacement ( ct / cvt / is , battery bank ( 220v ) 01 weak checking , busbar 48w check , cleaning of switchyard . marsh . box , acdb / dcdb attends defect , battery bank ( 48v ) 01 weak checking , battery bank capacity test , cleaning of 400 / 132 kv relay panels / trf , misc works , dewatering of underground pits / trenches , station earthing system , h2 drier attend defect , deptt man . dep-hsw , deployment of hydra , crane , misc works painting , misc works ( <> ) letter writing