Improvement of electric sub stations at tube well Tomal and CPS Muthi Phase-II under District Capex Budget

Amount

Improvement of 100 KVA electric stub station of Tube Well Tomal by way of bush cutting around the transformer. Providing of a steel 10’ x 10’ protection fence around the electric sub-station and cementing the floor under and around the sub-station for preventing the growth of weeds. Fence is to fabricated out of wire mesh fencing 4 ft’ in height and welded with angles duly grouted in ground. An 8’ wide door mounted on hinges also fabricated out of mesh wire is to be provided facing the roadside for gaining access to the transformer in case of need for replacement. Disconnecting all electrical connections and unmounting the transformer using hydra crane and manual labour keeping it aside safely. Replacement of worn-out channels used for making pole mounted base frame by providing and fitting of new 2 no. 4” channels of 10’ length. Dismantling of damaged LA’s, DO fuses and link sets and providing and fitting of new 11 KV lightening arrestor on HT line – 3 nos.11 KV drop out fuses – 3 nos. and 11 KV link set - 3 nos. Replacement of worn-out conductor for making connections. Painting of the electric sub-station along with poles, angles and channels by using paint of approved colour. Minor repairs to the 100 KVA transformer by way of replacement of 2 no. LT bush rods along with bushings and 1 no. HT bush rod along with bushing. Topping up of transformer oil by adding fresh transformer oil – 30 Ltrs. Placing the transformer in its proper place of installation using hydra crane and manual labour. Job includes fabrication / fitting of LT bus bar along with insulators and providing / fitting of single core LT Aluminum cables of suitable rating to be laid between LT bus bar and the transformer. Job also includes replacement of worn-out 120 mm sq. armoured 3.5 core LT AL cable 20 Mtrs. in length to be laid between lt isolation point and main switch. Earthing of electric sub-station by way of excavation of a pit of size 4’ x 3’ x 6’ depth near pump house for earthing of pumping machinery. Job includes disposal of excavated material at permissible dumping site by manual labour, cleaning of excavated pits properly. Providing and laying of earthing plates 600 x 600 x 6 mm with GI nuts, bolts. Providing and fixing GI strips 25 x 3 mm earthing upto pump room. Providing and filling of charcoal and salt in layers for proper earthing and filling of excavated pits with good earth. Providing and laying of 1½” dia. GI pipes with funnels on upper side above ground level for watering purposes. Earthing of submersible pump set, LT control panel and voltage stabilizer by using GI strips / copper cable 25 x 6 mm properly tightened with nuts and bolts. Earthing of neutral of HT transformer so as to avoid any leakage of electric current. Job includes providing and fitting of main service line of twin core cable from electric transformer to main MCB. Providing / Fitting of 4 nos. LED lights – 50 watts each to the side walls of the pump room building having individual OFF / ON switches. Laying of PVC copper conductor through PVC baton for the above-mentioned lights. All the lights shall have to be connected to main DP switch inside the pump room for operation. Complete job including cost of materials, hydra crane hire charges, carriage and labour charges.

Improvement of 250 KVA electric sub-station at CPS Muthi Phase II by way of disconnecting of HT fuses. Painting of the electric sub-station along with poles, angles and channels by using paint of approved colour. Fabrication / fitting of LT bus bar along with insulators and providing / fitting of single core LT Aluminum cables of suitable rating to be laid between LT bus bar and the transformer after proper thimbling. Job also includes cutting of cable ends of already laid 400 mm. sq. LT Al cable at transformer side and providing and fitting of new thimbles and making connections with the transformer. Providing and fitting of 95 mm. sq. single core Al cable to be laid between the transformer and voltage stabilizer for replacing the worn-out neutral wire. Upkeepment to 250 KVA electric transformer by way of shifting the installed transformer to workshop using hydra carne and manual labour and arranging an alternate transformer and installing it in its place so the water supply doesn’t get affected. Repair to the transformer by way of dismantling the transformer and removing the HT and LT coils from oil tank and emptying the transformer oil in barrels. Cleaning the oil tank using chemicals to remove carbon deposits and repair to the oil tank using welding to plug the leakages. Replacing 2 no. HT bush rods along with bushings and 1 no. LT bush rod along with bushing. Providing and filling of 350 Ltrs. fresh transformer oil in place of old oil. Providing and fitting of new gaskets and assembling the transformer and shifting back to site of installation. Replacing the standby transformer provided by the firm with repaired transformer using hydra carne and manual labour. Making electrical connections and after ensuring proper charging, testing on no load and then on full load. Complete job including cost and carriage of materials and labour charges.

GANPATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works