Electrical Works & Installation Tenders

Chemical Earthing:Earthing of distribution transformer including digging of pit of size 2.5 Mtr depth and make hole of size 150 mm. Placing of earthing electrode (to be supplied by contractor as per drawing No. A) as drawing B, connecting the same with G.I. Strip (to be supplied by contractor ) of size 35x6 mm as per drawing C for a minimum lenght 6 m. treatment of soil with highly condctive substance as per IS 30343 complete in all respect, result of earthing resistance to be recroded in M.B. before and after installation of earthing. The earth resistance after earthing should be less than 1 Ohm.

Erection of 6 Way pillar box including excavation of foundation pits as per standard specification 2 Nos pillar concrete walls, coping and earthing the pillars below ground level 3 feet from ground level including cost of all materials, cost of labours including electrical works, transportation, lead, lift complete etc.,

Repair and maintenance of 11 No. gates of CHEP-III by way of dismantling and cleaning of all parts by using petrol, dhoti cloth, brush etc. Applying fresh coat of grease to all the parts of gate and then assemble it properly. Oiling to chain sprocket arrangement and rollers which includes shaft, lock pin, roller, etc. Repair of damaged Chain block at head work if required. Replacement of gear oil in reduction gearbox, damaged/worn out brake pads, Stainless steel nuts & bolts for seals and repair of motor if required. Removal of old cadmium compound / grease from the steel wire rope, cleaning it properly and then applying fresh coat of cadmium compound. Cleaning of sill beam. Replacement of damaged/burnt out contactors switches, fuses, indicatorsetc. The job also includes complete dismantling of winch machine of manually operated gates which include pinion, gear, gun metal bushes, etc. and cleaning of all parts by using petrol, dhoti cloth, brush etc. Applying fresh coat of grease to all the parts of winch machine of the manually operated gates and then assemble it properly. Oiling to rollers which includes shaft, lock pin, roller, etc. removal of old grease from the threaded stem rod, cleaning it properly and then applying fresh coat of grease. cleaning of sill beam. Welding of broken /damaged parts if any .Checking the manual as well as electric operation of the gates by lifting and lowering it 2-3 times.

Supply and installation of junction boxes and Laying of Cables from ESP hoppers, MCC, Compressor Room and Slurry pump house to PLC at Units-5,6,7&8 AHP

Earthing of substation --Excavation of earth pit of dia 650 mm & depth 3000 mm, installation of Earthing pipe of 40 mm Nominal bore & 4mm wall thickness & length 2.5 mtr long as Per IS 1239.GI Strip for neutral earthing of size 25 mm x 3 mm for connection of transformer body,G.O Set & lightening arrestor as per IS 2629/85, GI nuts & bolts,refilled with earth enhancement materials and earth Chamber made of brick masonary with RCC slab cover.