insulation and recoiling of the old and used coils of windings of the two power transformers having power rating 5000KVA and voltage ratio is 33/3.3KV

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Re-insulation and recoiling of 3Nos old and used primary coils of 5MVA 33/3.3 KV Power Transformer with proper grade of insulation. i. Covering should be TPC ii. Dimensions and other insulation should be exactly as per old coils. Primary coil data: Type-Disc coils 1. 99.9% Electrolytic Bright annealed copper strip with TPC. 2. No of Conductor: (i) For DISC coil = 1 3. size of conductor: Bare: 6.6mm X 2.6mm TPC: 7.0mm X 3.0mm 4. No of Discs : 86 As per Sample / Old Coil, TURN/DISC:-15 approx. 5. Coil Size: ID:440mm, OD:560mm and HT:855mm 6. Weight of each coil: 320 Kg (including insulation) 7. No. of coils: Three(03) 8. Tap Range : +10% to -10% ( In stpes of 2.5% or as per Old coil) Detail scope of work: 1. Scraping of the old insulation, acid washing and pre annealing for all bend straightening of the disc coils. Straightening of the bend portions through roller die, final annealing and covering with four layers of Kraft papers of specific sizes as required, with in clock and anti clock direction with overlapping and bringing the insulated conductor as per specification provided. 2. Formation of disc coils with all lock joint cut spaces as required, pre-compressed press-phan boards for separators and winding the coils with 14% Rupatan sticks if required. Finally placement of the coils in heat chamber and pressing the same till the desired specifcations are achieved. (total cost including materials, manpower, transport to and fro, packing and forwarding charges and other overheads)

HV (HT) Coil Details:Re-insulation and recoiling of old and used primary coils of 5MVA 33/3.3 KV Power Transformer with proper grade of insulation. i. Covering should be TPC; ii. Dimensions and other insulation should be exactly as per old coils. Primary coil data: Type-Disc coils 1. 99.9% Electrolytic Bright annealed copper strip with TPC.;2. No of Conductor: (i) For DISC coil = 1 3. size of conductor: Bare: 7.0 mm X 2.3 mm ,TPC: TPC: 7.4 mm X 2.7mm;4. No of Discs : 80 As per Sample / Old Coil, TURN/DISC:-as per sample coil;5. Coil Size: ID: 445mm, OD:555mm and HT:845 (coil ) 995 mm (tip to bottom);6. Weight of each coil: ;7. No. of coils: Three(03);8. Tap Range : +10% to -10% ( In stpes of 2.5% or as per Old coil) LV (LT) Coil Details: Re-insulation and recoiling of old and used secondary coil (LV) of 5000KVA, 33/3.3KV power Transformer with proper electrical grade of kraft paper insulation. i. Covering should be TPC ii. Dimensions and other insulation should be exactly as per old coils. Primary coil data: Type-Disc coils 1. 99.9% Electrolytic Bright annealed copper strip with TPC.;2. No of Conductor: (i) Forlaer type winding coil =9 (3AX 3R);3. size of conductor:9.7 mm X 3 mm ,TPC: TPC: 10.1 mm X 3.4 mm;4. No of layer :3 As per Sample / Old Coil; as per Sample coil;5. Coil Size: ID:330mm, OD:415mm and HT::945mm ; Weight of both coils ( HV + LV coil of each set): 525Kg (including insulation) Core Details: Core Dia: 320; Limb Centre:560 ; Window Height:970 Detail scope of work: 1. Scraping of the old insulation, acid washing and pre annealing for all bend straightening of the disc coils. Straightening of the bend portions through roller die, final annealing and covering with four layers of Kraft papers of specific sizes as required, with in clock and anti clock direction with overlapping and bringing the insulated conductor as per specification provided. 2. Formation of disc coils with all lock joint cut spaces as required, pre-compressed press-phan boards for separators and winding the coils with 14% Rupatan sticks if required. Finally placement of the coils in heat chamber and pressing the same till the desired specifcations are achieved. (total cost including materials, manpower, transport to and fro, packing and forwarding charges and other overheads)

Total impact of GST plus Labour Cess [@ 1 % (BOCW Cess to be deducted from the RA bill as per the value of the work progress)] for the purpose of CTC

J B ELECTRICALS