PROVISION OF ADDITIONAL ELECTRICITY FOR THE POWER REQUIREMENT OF TECHNICAL BUILDING AND OTHER CONNECTED WORK AT CEPTAM BENGALURU

Supplying, laying and testing of underground XLPE insulated, screened, PVC bedded, galvanised steel wire armoured, electric power cables (heavyduty) with stranded aluminium conductor, 11000 volts grade (Earthed) of cross sectional area 3 core 95 sq. mm, complete all as specified and directed. (From BESCOM feeder to RMU and RMU to transformers)

Supplying and fixing Cable jointing kit for 11 KV (Earthed) grade cable for outdoor termination heat shrink type joint complete with jointing material and accessories suitable for 3 core XLPE armoured aluminium conductor cable of size 50 sqmm to 95 sqmm, complete all as specified and directed.

Supplying and fixing 100mm bore light grade GI tubing with requisite fittings for cable protection laid in trenches or fixed to walls/poles complete all as specified and directed.

Supplying, Installing, Testing and Commissioning of 12 kV Class, 630 A, 21 kA for 3 Seconds, Internal Arc Classified (IAC AFLR) 21 kA for 1 Second, Outdoor Type, One Side Extensible, Metal Enclosed, SF6 Gas Insulated Ring Main Unit (RMU), Configuration VVVV+, comprising four Nos. 630 A Vacuum Circuit Breaker (VCB) Ways, suitable for operation on 11 kV, 3 Phase, 50 Hz system, complete with all protection, control, metering, interlocking arrangements, accessories and associated works conforming to IEC 62271-200, IEC 62271-100, IEC 62271-102, IEC 62271-1, IEC 60265-1, IEC 60529 and relevant IS/IEC standards. NOTE:- For detailed specifications and other requirements, please refer Annexure- I to this BOQ

Supply, Installation, Testing and Commissioning of 315 kVA, 11/0.433 kV, 3 Phase, 50 Hz, Outdoor Type, Oil Immersed, ONAN Cooled, Copper Wound, CRGO Core Distribution Transformer conforming to IS 1180 (Part-1):2014 with latest amendments, BIS Certified, Energy Efficiency Level-3 (equivalent to BEE 5 star rating), with low loss CRGO core (core shall bve clamped using insulated clamping arrangements to minimize vibration and noise), Vector Group Dyn11, suitable for outdoor continous operation at rated load under tropical climatic conditions, complete with off circuit Tap Changer (OCTC) having steps +5% tap range in five positions as per IS 1180 (latest),suitable for de-energised tap changing, complete all standard fittings and accessories, first filling of transformer oil conforming to IS 335 and complete with all accessories as specified below. The transformer shall be complete with: 1. High Voltage cable box suitable for 11 kV XLPE cable termination complete with porcelain bushings, terminal connectors, cable glands, nuts, bolts and washers. 2. Low Voltage cable box suitable for LT XLPE cable termination complete with porcelain bushings, brass rods, terminal connectors, cable glands, nuts, bolts, washers and bimetallic connectors. 3. Conservator tank complete with magnetic oil level gauge (MOG). 4. Silica gel dehydrating breather. 5. Double float Buchholz relay with alarm and trip contacts complete with copper control cable up to marshalling box and further wiring up to protection/VCB relay panel. 6. Pressure Relief Valve (PRV) with alarm and trip contacts. 7. 150 mm dial type Oil Temperature Indicator (OTI) with minimum 2 NO + 2 NC contacts for alarm and trip functions. 8. 150 mm dial type Winding Temperature Indicator (WTI) with minimum 2 NO + 2 NC contacts for alarm and trip functions.

Sl. No. 5.00 Contd... 9. Thermometer pockets for OTI and WTI. 10. Weatherproof marshalling box, IP55 protection, provided with see-through double glass window, anti-condensation space heater, LED illumination lamp, door operated limit switch, MCCB, Terminal Test Block (TTB), terminal strips, internal wiring and cable glands. 10. Off circuit tapchanger (OCTC) with externally operable tap selector having pad locking arrangement, tap position indicator and suitable opearting handle. 11. Tap changer shall be suitable for operation only under de-energised condition and shall comply with IS 1180 (Part-I) :2014 (latest amendment. 12. Transformer shall be provided with low-loss CRGO core, high conductivity electrolytic copper windings, vaccum oil filling under controlled conditions and routine/type tests as applicable. 13. Windings shall be mechanically braced to withstand short circuit forces in accordance with IS/IEC requirements. 14. Oil filling hole with cap. 15. Air release plug. 16. Filter valve. 17. Drain valve with oil sampling arrangement. 18. Earthing terminals (minimum 2 Nos.) for transformer tank and marshalling box. 19. Neutral bushing and neutral terminal brought out on LV side. 20. Bi-directional rollers. 21. Lifting lugs. 22. Jacking pads. 23. Rating Plate, Name Plate and Diagram Plate engraved on stainless steel.

Sl. No. 5.00 Contd... 24. Danger plate in accordance with statutory requirements. 25. Terminal connectors and bimetallic connectors suitable for cable terminations. 26. Oil preservation system complete with all fittings. ( conservator tank + breather & sealed diapharm) . 27. Transformer neutral shall be brought out with 100% rating suitable for outdoor installation with protection enclosure if required. 28. Transformer tank and radiator shall be provided with corrosion-resistant surface treatment comprising shot blasting, epoxy primer and polyurethane (PU) finish paint suitable for tropical outdoor environment. 29. Gaskets shall be nitrilr rubber/neoprene and suitable for long term oil tight performance. NOTE:- (i) The contractor shall submit the following:- (a) The offered transformer must necessarily have BIS certification, BEE star labelling and a valid type test report duly issued by NABL accredited BIS approved lab.Lower rating of transformers does not qualify for considerstion on the pretext of having BIS/BEE certification and type test report of higher rating transformer. Further OEMs having in house NABL- accredited labs may be given priority for validated routine testing. Non submission of valid BIS license, BEE star labelling certificate and type test reports for the offered transformer rating shall not be approved by the Engineer In Charge.

Sl. No. 5.00 Contd... (b) Guaranteed no-load losses and load losses conforming to Energy Efficiency Level-3 requirements. (c) MH Sheets duly signed by EIC and SEI. (ii) The item shall include transportation, unloading, handling, erection, foundation fixing (foundation is paid under relavent item). Painting and identification of transformer foundation complete with surface preparation, primer and two coats of weather-resistant exterior paint. Providing alternate black & white hazard markings on plinth edges, transformer identification details (Rating, Voltage, Transformer No., Feeder Name, Year of Installation), and statutory "DANGER – 11 kV" signages complete as directed by the Engineer-in-Charge. grouting, earthing connections, control cabling, interconnections, testing, commissioning, submission of approved drawings, manufacturer's test certificates and all materials, labour and accessories required for satisfactory operation of the transformer complete in all respects as directed by the Engineer-in-Charge. (iii) The quoted rate shall also deemed to include for pre-dispatch inspection of equipment at manufacturer's works if requested by the Engineer-in-Charge and/or authorised departmental representatives before dispatch. The contractor shall arrange and facilitate Factory Acceptance Tests (FAT), routine tests, verification of type test certificates, demonstration of protection, interlocking and operational schemes and provide all necessary testing facilities, documents and assistance without any additional cost to the department. (iv) contractor must submit the necessary documents by providing necessary arrangemets during the SEI inspection of the transformer.

Construction of platform for transformer as per manufacturer design (or) of size 2.1m x 2.1m x 1.2m (clear height with additional 150mm thick PCC 1:3:6 type C-2 foundation below ground level), made out of 23 cm thick brick masonry in cement mortar 1:6, above ground level the hollow space to be filled with hardcore of size n.exc 63 mm, deposited, spread and levelled in layers not exceeding 15cm thickness, watered and well rammed, with a 100 mm thick reinforced cement concrete 1:2:4 type B-1, reinforced with 8 mm dia MS bar at 100mm centre to centre bothways, as in floor of platform and plastering 15 mm thick alround in CM 1:4, including brick stair for platform and providing HT rubber mat as per site requirement. Chain link fencing around the platform shall be provided upto 1.20m clear height using 40x40x5 mm angle iron posts at 1.2 M intervals and chain link fencing using max size of mesh not exc 100mmx100mm and dia of wire not exc 3.15mm with provision of gate of size 1.00 M x 1.2 M size using 40x40x 5mm angle iron frame and XPM weighing not less than 2.50 kg/Sqm.The posts shall be grouted in PCC 1:2:4 type B-1 in foundation along with an high tension danger plate with a skull and cross bones showing 11000 volts complete all as specified and directed.