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Tendering Authority: Karnataka Power Corporation Limited

India, Karnataka, Bangalore

NTID

24828531

Last Date For Submission

09 Jul, 2021

Closing Date

09 Jul, 2021

Description

Draining Of Transformer Oil To Storage Tank. Removal Of Hv Lv Bushings Turrets And Neutral Bushing Turret Dismantling Of Cooler System Accessories. Removing Wiring Of Transformer Marshalling Box, Buchholz Relay Pressure Relief Valve Mog Thermometers Oil Pumps And Oltc Etc Removing Of Transformer Marshalling Box Buchholz Relay Pressure Relief Valve Mog Thermometers Etc. Lifting Of Bell Tank With Arrangement Of Crane Required Tools And Tackles. Inspection And Identification Of Fault Problem. Repair Rectification Of Identified Problem Not Involving Core & Winding If Any Damages Observed In Core, Winding And Oltc Of Transformer Which May Require Replacement Of Oltc Such Work Are Taken Up Separately. Repair Of Oltc If Necessary By Providing Required Spares. Air Dry Varnishing To Bell Tank. Re Fixing Of Bell Tank. Assembly Of Transformer Parts Like Lv & Hv Turret Bushings Marshalling Box Wiring Of Transformer Marshalling Box Wiring Of Buchholz Relay Pressure Relief Valve Mog Thermometers Oil Pumps Oltc Etc. Replacement Of Complete Gaskets By New Ones. Heating And Vacuum Drying Process With Nitrogen Purging Till Desired Values Achieved. Oil Filling Under Vacuum And Transformer Oil Filtration Till Desired Bdv And Ppm Are To Be Attained Is Under Agency Scope. Oil Testing Bdv Ppm Dga Has To Be Carried Out. Ms. Cpri Bangalore By Agency At Their Own Cost. Rectification And Testing Of One Number Of Heat Exchanger One Tube Damaged And Restoration Of Cooling System. Standard Testing Of Transformer Ratio Test Magnetising Current Test Magnetic Balance Test Vector Group Test Oltc Operation Sfra Tan Delta For Winding And Hv Bushing Checking Of Oti Wti Buchholz Relay Etc And Conducting All Relevant Tests As Per Standards. If It Needs Shifting Of Transformer From Service Bay To Pt Bay For Testing And Return Back To Service Bay At Adph Shifting May Be Around Approximate Distance Of 15mt From Service Bay. Charging Of Transformer Using Suitable Dimmer Stat And Intermediate Transformer And Holding For One Hour. Cleaning Painting Outside The Tank Including Cooling System With Single Coat With Epoxy Light Grey Colour To Shade No 631

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