400/220/33 kV, 500 MVA, 3 PHASE AUTO …

1 GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 1 of 96 GUJARAT ENERGY TRANSMISSION CORPORATION LTD. SARADAR PATEL VIDYUT BHAVAN, RACE COURSE, BARODA 390 007. TECHNICAL SPECIFICATION FOR 400/220/33 kV, 500 mva , 3 PHASE AUTO TRANSFORMER GETCO/E/TS - 4 XMER02/R0 Mar12 GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 2 of 96 SPECIAL INSTRUCTIONS TO BIDDER Please read following instructions carefully before submitting your bid. 1. All the drawings, elevation, side view, plan, cross sectional view etc., in AutoCAD format and manuals in PDF format, for offered item shall be submitted. Also the hard copies as per specification shall be submitted. 2. The bidder shall submit Quality Assurance Plan with the technical bid.

2 3. The bidder shall have to submit all the required type test reports for the offered item. In absence of this, the evaluation shall be carried out accordingly as non-submission of type test reports. 4. The bidder must fill up all the points of GTP for offered item/s. Instead of indicating refer drawing, or as per IS/IEC , the exact value/s must be filled in. 5. All the points other than GTP, which are asked to confirm in technical specifications must be submitted separately with the bid. 6. The bidder is required to impart training in view of manufacture, assembly, erection, operation and maintenance for offered item, at his works, to the person/s identified by GETCO, in the event of an order, free of cost.

3 The cost of logistics will be bear by GETCO. 7. Please note that the evaluation will be carried out on the strength of content of bid only. No further correspondence will be made. 8. The bidder shall bring out all the technical deviation/s only at the specified annexure. GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 3 of 96 QUALIFYING REQUIREMENT DATA (For Supply) Bidder to satisfy all the following requirements. 1) The bidder shall be Original Equipment Manufacturer (OEM). The offered equipment have to be designed, manufactured and tested as per relevant IS/IEC with latest amendments. 2) The minimum requirement of manufacturing capacity of offered type, size and rating of equipment shall be THREE times tender/ bid quantity.

4 The bidder should indicate manufacturing capacity by submitting latest updated certificate of a Chartered Engineer (CE). 3) Equipment proposed shall be of similar or higher rating and in service for a minimum period of THREE (3) years and satisfactory performance certificate in respect of this is to be available and submitted. 4) The bidder should clearly indicate the quantity and Single Value Contract executed during last FIVE (5) years, for the offered equipment. Bidder should have executed one single contract during last five years for the quantity equivalent to tender / bid. The details are to be submitted in following format, Sr. No ITEMS SUPPLIED TO ORDER REFERENCE No.

5 & DATE ITEMS QUANTITY ORDER FULLY EXECUTED. YES/NO STATUS, IF ORDER UNDER EXECUTION REMARK 5) Equipment offered shall have Type Test Certificates from accredited laboratory (accredited based on ISO/IEC Guide 25 / 17025 or EN 45001 by the National accreditation body of the country where laboratory is located), as per IEC / IS / technical specification. The type test reports shall not be older than FIVE years and shall be valid up to expiry of validity of - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 4 of 96 INDEX Sec. No. Particulars Page no. SCOPE : 6 GUARANTEE 6 TRANSPORT 7 STANDARDS 7 DRAWINGS 7 TYPE OF TRANSFORMER 8 DESIGN 8 TANK 9 UNDER CARRIAGE 11 CORE 11 WINDING 13 INSULATING OIL (Appendix A) 14 INSULATION 15 TEMPERATURE RISE 15 FREQUENCY 16 PARALLEL OPERATION 16 IMPEDANCES 16 TAP CHANGING MECHANISM 17 OIL PRESERVING EQUIPMENT 19 BUSHINGS 19 COOLING 20 CENTRE OF GRAVITY 23 ACCESSORIES 23 TERMINALS 29 CURRENT TRANSFORMERS 29 TERMINAL MARKING 29 CLEANING AND PAINTING 29 PACKING AND TRANSPORT 30 LABLES 30 INSPECTION 31 INSTALLATION CHECKS 34 COMMISSIONING CHECKS 34 TESTING (Type, Special & Routine)

6 35 TEST ON TRANSFORMER TANK 37 TEST AT SITE 38 TESTS ON OLTC 39 TEST REPORTS 39 LOSS/DAMAGES 39 TECHNICAL AND GUARANTEED PARTICULARS 39 INSRUCTION MANUALS 39 DEVIATION FROM SPECIFICATION 40 TRANSFORMER LOSSES AND EVALUATION OF BID 40 PENALTY FOR HIGHER LOSSES 41 REJECTION 41 GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 5 of 96 TRAINING TO ENGINEERS 41 TRANSFORMER OIL 42 QUALITY ASSURANCE PLAN 42 SECTION II SCOPE 44 CLIMATIC AND ISOKERAUNIC CONDITIONS 44 TYPE AND RATING: 44 EARTHQUAKE & WIND DESIGN LOADS 47 BUSHING CT 47 NEUTRAL CT 47 POWER SUPPLY FOR CONTROLS 48 OIL STORAGE TANK 48 OIL SAMPLE BOTTLE 49 SCH-A GTP for Power TR OLTC Control Cabinet Clamps & Connectors 51 62 64 66 Appendix -A SPECIFICATION OF TRANSFORMER OIL (uninhibited)

7 68 Appendix B QUALIFICATION REQUIREMENTS FOR ERECTION TESTING & COMMISSIONING 70 ERECTION OF TRANSFORMER 70 TOOLS REQUIRD FOR ERECTION 71 Annexure-I AUTOMATIC VOLTAGE REGULATING RELAY 73 Annexure-C List of documents to be attached 75 Annexure-II Technical specification for On line moisture and multiple gas analyzer 76 Annexure-III Technical specification for Nitrogen Injection Fire Protection system 84 GTP for NIFPS 93 GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 6 of 96 SECTION: I DETAIL SPECIFICATION OF 500 mva , 400/220/33 kV THREE PHASE AUTO TRANSFORMER GENERAL TECHNICAL REQUIREMENTS SCOPE: This section covers the design, manufacture, assembly, inspection, testing at manufacturer s works, supply and delivery include loading, transportation & unloading on plinth at site, of the 500 mva , 400/220 kV with 33 kV loaded tertiary winding rated for 167 MVA active connected in YNaOd11, three PHASE Auto transformers as detailed in the Schedule of requirements, complete with all accessories required for safe, efficient, satisfactory and trouble free operation of the equipment.

8 The scope of work shall also include EITHER complete erection, testing and commissioning of all the equipments/accessories furnished under this specification OR only supervision of erection, testing and commissioning of all the equipment furnished under this Specification, as indicated in Schedule A of the commercial bid. Each transformer shall be supplied with two number of Oil storage tank as per cl. no. and 3 nos. of oil sampling bottles as per cl. no. , Fiber optic sensors, On Line Moisture and Gas In Oil Analyser as per Annexure II, Nitrogen Injection System For Protection against The Fire & Explosion as per specification no. GETCO/E/TS-FF/2902 2008, attached with this specification, On line PD measurement, GPS/GRPS/GSM based on line transformer movement tracking system, Condition controlled maintenance free on line breather as per specification.

9 However, Bidder has to quote the requirement of equipment / Material as indicated in Schedule-A of commercial Bid. GUARANTEE: The bidder shall among other things guarantee the following: i) Quality and strength of materials used. ii) The tenderer shall give the guarantee as satisfactory working of the complete transformer for 36 months from the date of commissioning of equipment or 42 months from the date of receipt of transformer at site, whichever is earlier. Guarantee period will be reckoned from the date of receipt of 100 % accessories and not from the date of receipt of main tank only. GETCO/E/TS - 4 XMER02/R0 Mar12 Sign and Seal of Bidder Page 7 of 96 It may be noted that the service guarantee would be applicable even when the transformers are erected and operated through any other agency appointed by the GETCO.

10 TRANSPORT: The equipment to be furnished under this specification shall be packed for transportation in such a manner as may facilitate easy handling and avoiding any damage during transit. STANDARDS: The Power Transformers covered under this specification shall comply with the requirements of the latest edition of IS: 2026 (amended up to date) except specified herein. However, in the event the offered equipment conforms to any other standard, the salient points of difference between the standard adopted and the specified standard shall be clearly brought out in the bid. DRAWINGS: Drawings in AutoCAD format and in hard copy, incorporating the following particulars shall be submitted by the bidder with the bid.