66/MID/AN

Repairs to the 250KVA Transformer installed at LIS Aryanpura . 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 damage coils with chain pulley block. Rewinding its 3 nos. H.V. coil & 2 no. L.V. coils with superior wire of requisite size/gauge. Replacement of damaged 1 no. HT and 1 no. LT bush rods with the new bush rods as per sample. Providing /Fitting of new gasket, L.T. terminal plate, nuts, bolts, etc. Cleaning of the tank and drying it. Providing/Topping up of 90 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 platform with the help of crane using skilled manual labour. Job also includes providing /fitting of new knife set. 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.

Repairs to 250 KVA voltage stabilizer installed at LIS Aryanpura. The job involves disconnecting of the Voltage stabilizer from the main power supply (Incoming and Outgoing cables) . Opening and removing of the panel, loosening /dismantling of the top cover, nut and bolts. Lifting of inside transformer assembly with the chain pulley block for extraction of the complete unit. Replacement of 2 no. LT bush in place of wornout ones.Replacement of the rotor assembly (1 nos.) by way of p/f of new components. The job includes P/F of 1 No. volt meter (Output Meter), Boiling of the T.oil in stabilizer by draining it out of the tank. Heating with heater coils to make it completely moisture free, filling it back after complete cleaning and drying of tank. Providing filling of 150 litre t.oil to make up for the deficit. Reinstallation of the stabilizer frame with transformer assembly. Lowering of complete unit in tank after p/f of shock proof gasket and body with nuts/bolts . Installation inside the LIS by using specified tools and tackles .Connecting power cables by p/f of new thimbles of the requisite capacity and testing on load . Complete job includes the cost of material, labour charges, transportation charges, hiring charges of tools / tackles required at site.

M/s RK Elect. Mech. Engg and fabrication works

NATIONAL ELECTRO-MECH COMPANY