Augmentation of GSS Rawalpora by way of replacement of 02 No. 20 MVA Power Transformers by 02 No. 50 MVA, 132/33 KV three phase Power Transformers with allied works

Design, Engineering, Manfacture, Shop Testing, Supply including packing and forwarding, Transportation and delivery at site as per Technical Specifications and approved drawings

Main Equipments

50 MVA, 132/33 kV Three Phase Power Transformer with OLTC, SCADA Compatible RTCC, NIFPES, HV and LV connectors and other required accessories and fittings with online DGA monitoring kit, online dehydration kit and maintenance-free automatic breathers as per detailed Technical specs as per SBD incliding other related works/accessories & Civil works required for its complete commissioning. (Current density for HV/LV winding not more than 2.4 A/sq mm. Core Flux density not more than 1.5T) alongwith spares strictly as per the details contained in the Standard Bidding Document (SBD)

Single phase, 50 c/s 145KV Current Transformers (300-150/1-1-1-1-1 A or as per site specifications), 31.5KA for one second, rated dynamic current 100KA(peak), Class A insulation, Burden 20 VA, 3No.PS Core,01 No.5P10 & 01 No.0.2S

36kV Neutral Current Transformer with Current Rating 300/1 and VA Burden 15VA

Single phase 50c/s,out door metal oxide gapeless type ,120 kV (rms)Surge Arrester including counters/monitors ,insulating base all associated accessories & auxillaries

CT Clamps 200mm2 /200mm2, made of Alluminium Alloy and shall comply in all respects with IS:5561-1970 (latest edition)

33kV 400Sq. mm ,Aluminum ,single core XLPE cable,FRLS in two lengths ( 480+455) Mts including Indoor & Outdoor Heat Shrinkable Cable Kits

33/0.433 kV, 250 kVA, 3-Phase Distribution Transformer complete with bimetallic terminal connectors, G I Channel/Angle, LA's etc( Energy Efficiency Level-2) including making all necessary arrangements for integration in the existing circuit / provision of Aux. T-1 or new Aux T-2 in the circuit, as required

300 mm2 PVC insulated Cable 1.1KV Grade, 3.5 Core, armoured, FRLS including Indoor & Outdoor Heat Shrinkable Cable Kits along with spares as per SBD.

8 MTR Long ST Pole, as per IS

GI Channel 100x50X5 mm, as per IS

Handling, Storage, Preservation, Erection, Testing and commissioning of equipments and material including all comsumables required for 50 MVA Power Transformers, CT's, Surge arrestors etc including Ferrules, Lugs, Printed sleeves, cable ties, cable glands, Tags, minor cutting, wielding works etc. complete in all respects.

Main Equipments

50 MVA, 132/33 kV Three Phase Power Transformer with OLTC, SCADA Compatible RTCC, NIFPES, HV and LV connectors and other required accessories and fittings with online DGA monitoring kit, online dehydration kit and maintenance-free automatic breathers as per detailed Technical specs as per SBD incliding other related works/accessories & Civil works required for its complete commissioning. (Current density for HV/LV winding not more than 2.4 A/sq mm. Core Flux density not more than 1.5T)

Single phase, 50 c/s 145KV Current Transformers (300-150/1-1-1-1-1 A or as per site specifications), 31.5KA for one second, rated dynamic current 100KA(peak), Class A insulation, Burden 20 VA, 3No.PS Core,01 No.5P10 & 01 No.0.2S

36kV Neutral Current Transformer with Current Rating 300/1 and VA Burden 15VA

Single phase 50c/s,out door metal oxide gapeless type ,120 kV (rms)Surge Arrester including counters/monitors ,insulating base all associated accessories & auxillaries

CT Clamps 200mm2 /200mm2, made of Alluminium Alloy and shall comply in all respects with IS:5561-1970 (latest edition)

33kV 400Sq. mm ,Aluminum ,single core XLPE cable in two lengths ( 480+455) Mts including Indoor & Outdoor Heat Shrinkable Cable Kits

33/0.433 kV, 250 kVA, 3-Phase Distribution Transformer complete with bimetallic terminal connectors,G I Channel/Angle, LA's etc (Energy Efficiency Level-2) including making all necessary arrangements for integration in the existing circuit / provision of Aux T-1 or new Aux T-2 in the circuit, as required

300 mm2 PVC insulated Cable 1.1KV Grade, 3.5 Core, armoured, FRLS including Indoor & Outdoor Heat Shrinkable Cable Kits

8 MTR Long ST Pole as per IS

GI Channel 100x50X5 mm as per IS

Civil Works

RCC Jacketing of Existing 20 MVA power Transformer Foundations for Installation of 50 MVA Transformer in 1:1.5:3 Mix( Min Qty 24.22 Cum) including Dismantalling work =2.65 Cum, Earth Work= 15.84 Cum, 1:4:8 Mix= 1.34 Cum, Reinforcement=120 Kg, Form work and Carriage-COMPLETE JOB as per instructions of Site Engineer.

Construction of foundation for 33/0.433 KV Auxillary Transformer as per instructions of site Engineer

Dismantelling of 2 No 20MVA Power Transformers at Grid station Rawalpora (One to be shifted to Divisional Stores Awantipora & other to GSS Lassipora)

De-erection/Dismantelling of existing 20 MVA,132/33KV Power Transformers by way of opening of Jumpers, draining oil into Barrels, opening of Conservator Tank etc, manual carriage up to loading site, loading, Mechanical Transportation up to Divisional Stores Awantipora/ GSS Lassipora , unloading of Power Transformer at the site along with assessories & Transformer Oil, Manual dragging of transformer & other items up to stacking site as per the instructions of Engineer Incharge.

Desludging /overhauling of 01 no. 50 MVA,132/33KV three Phase Power Transformers of 140 MVA,132/33 KV Grid Station Rawalpora

a. Complete disengaging of 01 no. 50 MVA,132/33KV three Phase Power Transformers including all associated connections & accessories ( Bank-4, Make BHEL) at Grid Station Rawalpora. b. Removal/draining of old transformer oil from the transformer tank including shifting of drained oil barrels to divisional stores Awantipora( Empety Barrels required are to be lifted from Divisional stores Awantipors) c. Removal /cleaning the sludge from the transformer bottom portion including cleaning ( hot bath),inspection and testing of transformer including drying/replacement of silica gel, checking of Bucholz relay, OSR, conservator oil level indicator, temperature sensors, cooling system, meausrement of IR value, dielectric stength and other recommended tests and cleanling of Transformer. d. Replacement of damaged gaskets including HV and LV Bushing gaskets and radiator gaskets. e. Supply & Refilling of the Fresh transformer oil ( 22400 Lts +5% reserve) including dehydration /filteration of Transformers as required to get good insulation resistance of the transformer winding and good BDV of the oil besides Cleaning of the rusted portions of the Transformer outer body surface including (Spared Barrels to be deposited in Divisional stores Awantipora) f.Any unforseen items

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