Heavey Water Board

Heavey Water Board has published Tender For Maintenance Of 220Kv Switch Yard During Mta-2024; 1 Maintenance of 3 phase, CGL make 220KV SF6 Breakers, such as Tightening of line connections and painting [3 separate poles for each Breaker] at a height of 5Meter in the 220 KV switchyard at its position. Replacing of corroded nut and bolts. Note: Supply of paint and cleaning materials are covered in item Sl.No.9 2 Maintenance of CTs in 220KV switch yardA] checking and tightening of primary connections at a height of 5 M.B] Tightening of secondary connections in the terminal Box.C] Thorough CT Insulator cleaning with dry cloth. 3 Maintenance of CVTs/PTs in 220KV switch yardA]checking and tightening of line connections at a height of 5 M.B] Cleaning and Tightening of secondary terminals and connections.C] cleaning and painting of top covers and base.Note: Supply of paint and cleaning materials are covered in item Sl.No.9 4 Maintenance of lightning arrestors in 220KV switch yard.A] Checking and cleaning the insulator for dirt deposition.B] Checking and tightening of bolts of the earth connections. 5 Tightening of CT, PT, control wires in the Isolator/ Breaker Local panel, PT/CT marshalling box including dressing of cables and crimping of loose lugs. 6 Checking all the loose connections of all 220 KV Over head bus conductors at various points i.e at jumpers, clamps, insulators etc. tightening the bolts & nuts, string insulators cleaning at 10 M elevation in the entire switchyard covering the 5 bays, wherever required the corroded bots & nuts to be replaced. 7 Maintenance of 3 phase 245 KV isolators [3 separate poles for each isolator] in 220KV switchyard.A] Tightening of Incoming & outgoing line connections on isolators side..B] Inspecting and cleaning the isolator main and earth switch contacts with solvent.C] Checking and tightening of all fixing bolts, drive tube lock nuts, drive lever and phase coupling clamp bolts etc. D] Checking the fixing bolt of the operating mechanism and railing the bearings.Note: Cleaning materials is covered in item Sl.No.9 8 Maintenance of bus post insulators in 220KV switchyard.A] Checking and tightening of line conductor terminalsB] Cleaning of insulators with dry cloth. 9 Supply of following material for above works 9.1 CRC 2-26 electrical contact cleaner 9.2 Synthetic enamel industrial grade paint. Colour: Red(10 litres), Yellow(10 litres). Make: Asian/Nerolac/Berger 9.3 Synthetic enamel industrial grade paint. Colour: Blue(10 litres), Smoke grey(40 litres), Green(10 litres), Black(5 litres). Make: Asian/Nerolac/Berger 9.4 General purpose thinner. Make: Asian/Nerolac/Berger 9.5 Electrical insulating sealer, 3M-1601 R . Last date of submission for this tender is 2024-06-07. This is a Cleaning Consumables tender in , Telangana