09/MID/AN

Repair to 630KVA electric Transformer installed at LIS Nazlachak. The job involves disconnecting all electrical connections and Lifting the transformer from its installed position and loading in the vehicle with the help of crane and shifting to workshop with mech. transport. Unloading at workshop . Disassembling the transformer at workshop by unscrewing the bolts of top cover and extracting the body with chain pulley block. Rewinding its 2 no. H.V. & 2 no. L.V. coils with superior copper wire of requisite size/gauge.. Providing /Fitting of new gasket, L.T. terminal plate, nuts, bolts, etc. Cleaning of the tank and drying it. Providing/Topping up of 150 litre transformer oil and heating the oil to make it moisture free. Lowering the windings back in the tank Assembling the transformer by tightening all nuts, bolts and using oil packing sheets wherever necessary. Loading in the vehicle and shifting back to site . Job includes placing of transformer on the foundation with the help of crane using skilled manual labour. . Fitting the transformer and restoration of electrical connections. Testing & commissioning on full load.. Complete job including cost of material, skilled and semi-skilled labour charges, loading & unloading at both ends and transportation charges as per site conditions of LIS. Complete job

Repair of 06 cusec discharge 36 m head H.C pump no. 01 at LIS Nazlachak .De-coupling of pump from the motor and removing the top cover, extraction of shaft and impeller assembly together with bearing bracket and shifting to the workshop by using manual labour and mechanical transport. Complete dismantling of impeller assembly. Rebuilding of pump shaft and impeller by using good quality electrodes. Thereafter turning/machining of rebuild pump shaft and impeller on lathe machine for proper size . P/F of 2-No bushes & 2-No bearings as per sample. Fabrication of glands and studs with nut. Fabrication of neck rings as per sample. . Re-assembling of impeller shaft assembly and shifting back to site and there after lowering at proper position, placement of oil seal and closing the top cover along with P/F of new nuts, bolts and studs coupling with motor. P/F of gland packing etc.and testing on no load. The Job includes cost of material, labour(skilled and unskilled), loading charges, hire charge of tool and tackles, to and fro carriage charges. Complete job

GANPATI ELECTRICAL AND MECHANICAL WORKS

N B Engineering and Electric Works