Corrigendum - Rate Contract For Maintenance Of Power Transformers , Service Transformers , Batteries And Switchyard Equipments At Ntpc Kahalgaon . Limited Tender , Arc For Maint . Of Trf / Batt / Swyd ( S-I&Ii ) , Power Tfr ( 200Mva ) Daily Chks , Switch Yard ( 400 Kv ) Daily Chks , Conductors ( <> ) Connection , Power Tfr ( 250Mva ) Connection , Power Tfr ( 63Mva ) Connection , Power Tfr ( 20Mva ) Connection , Power Tfr ( 200Mva ) 48W Chks , Marsh . Box ( <> ) Checking , Power Tfr ( 200Mva ) Cleaning , Oltc ( <> ) 48W Chks , Lt Tfr ( Oil ) 48W Chks , Power Tfr ( Gasket ) Repl , Power Tfr ( 160Mva ) Testing , Power Tfr ( 250Mva ) Filtration , Power Tfr ( Silica Gel ) Repl , Marsh . Box ( <> ) Cleaning , Power Tfr ( 250Mva ) Inspection , Misc Works ( <> ) Erection , Matl ( Misc ) Transportation , Power Tfr ( Accesories ) Repl , Oil Sample ( Tfr Oil ) Collection , Power Tfr ( Pump / Fan ) Repl , Lt Motor ( >2 . 2-5 . 5Kw ) Rpl-Brg , Power Tfr ( Oil ) Top Up , Oil Filtration M / C ( <> ) Opn / Mtc , Power Tfr ( 200Mva ) Thermography Analysi , Bushing ( Ehv ) Testing , Bushing ( Ehv ) Repl , Esp / Area ( Rectiformer ) 48W Chks , Misc Works ( <> ) Painting , Insulators ( >33Kv ) Repl Dmgd Item:001 , Misc Works ( <> ) Letter Writing , Breakers ( 400Kv ) Gas Filling , Current Tfr ( 400Kv ) Attend Defect , Marsh . Box ( 400Kv ) Cleaning , Breakers ( 400Kv ) 48W Chks , Breakers ( 132Kv ) 48W Chks , Isolators ( 400Kv ) 48W Chks , Isolators ( >33Kv ) 48W Chks , Breakers ( 33Kv ) 24W Chks , Current Tfr ( 132Kv ) 24W Chks , Breakers ( 11Kv ) 24W Chks , Switchgears ( Breaker ) 24W Chks , Switchgears ( Module ) 24W Chks , Switchgears ( 0 . 4Kv ) -Oh , Lt Motor ( <=2 . 2Kw ) Serv , Relays ( <> ) Testing , Bay ( <> ) Checking , Poles ( <> ) Repl , Isolators ( >33Kv ) -Attend Defect , Submersible Pumps ( <> ) Serv , Busbar ( 400Kv ) 48W Chks , Breakers ( 132Kv ) Gas Filling , Breakers ( 132Kv ) -Attend Defect , Overhead Line ( 11Kv ) Survey / Study , Insulators ( >33Kv ) -Repl , Battery Bank ( 220V ) 01W Chks , Battery Bank ( 370V ) 01W Chks , Battery Bank ( 48V ) 01W Chks , Battery Bank ( 24V ) 01W Chks , Battery Bank ( 220V ) Cap . Test , Battery Bank ( 370V ) Cap . Test , Battery Bank ( 48V ) Cap . Test , Battery Bank ( 24V ) Cap . Test , Batt Charger ( 220V ) 24W Chks , Batt Charger ( 48V ) 24W Chks , Batt Charger ( 24V ) 24W Chks , Batt Charger ( 220V ) Attend Defect , Batt Charger ( 24V ) Attend Defect , Dcdb ( 220V ) Oh , Dcdb ( 220V ) Cleaning , Dcdb ( 220V ) Attend Defect , Lighting System ( Tower ) Attend Defect , Battery Bank ( 24V ) Remove & Apply , Oil Sample ( Tfr Oil ) Transportation , New Works ( <> ) Cleaning