Tender For Rev Ing Of Existing Rooftop Solar Pv Power Plants And Establishment Of Grid-Connected Rooftop Solar Pv Power Plants Without Battery Bank At Igcar, Kalpakkam Note : 1.This Schedule Must Be Read Along With The Drawing, Specification And Scop
Tender Value
1.09 Crore
Estimated cost
Bid Submission
25 Sep 2026
20 days left
EMD
2.18 Lakhs
Bank guarantee accepted
Document Fee
Ref. Documents
Non-refundable
Tender Type
Online
Tender Overview
Organization
Tender ID
Competition Type
NCB
Bidding Type
Tender
Location / State
Chengalpattu → Tamil Nadu
EMD Exemption
Not Available
Quantity
Not Available
Website
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Address
Project Description
Tender for Rev Ing Of Existing Rooftop Solar Pv Power Plants And Establishment Of Grid-Connected Rooftop Solar Pv Power Plants Without Battery Bank At Igcar, Kalpakkam Note : 1.This Schedule Must Be Read Along With The Drawing, Specification And Scope Of Work (Section V) And General Specifications (Section Vi) For Complete Interpretation Of This Scope Of Work Quantitywise. 2.Items Of Work Described In Brief Below Are Detailed Under Specification Of Work. The Scope Of Work Will Not Be Estimated From The Brief Description Of This Schedule. 3.Rate Quoted Must Include All Components Required For Meeting The Specification And Performance Requirements Of The Item Irrespective Of Whether They Are Specifically Brought Out In This Schedule Or Not. 4.Tenderers Are Advised To Get Acquainted With The Site Conditions Before Quoting. 5.Schedule Rate Shall Be Firm And Overall Conditional Discount For The Total Tendered Amount Will Not Be Accepted. 6. Rate Quoted Should Be Inclusive Of All Taxes Including Gst.
BOQ
| Sl. No. | Item Description |
| 1 | Engineering, design, string sizing and establishment of N-Type TOPCon solar PV module strings for grid-connected solar power plants at various locations. The engineering shall include determination of the number of modules per string and string configuration based on module electrical characteristics, inverter MPPT voltage range, maximum permissible DC voltage and current, minimum site temperature, operating temperature, shading profile and plant layout. The work shall include provision and installation of solar PV modules, module-mounting clamps, fasteners and all associated module-installation hardware, complete in accordance with the approved design, drawings and detailed technical specifications.Note: DC cables from the PV strings to the DC string protection/combiner boxes, including their laying and termination, will be measured separately. (Refer Section V, Clause 9.1) |
| 2 | Establishment of three-phase grid-interactive power conversion and monitoring systems for solar PV power plants, including provision, installation, testing and commissioning of MPPT inverters/Power Conditioning Units (PCUs), plant data loggers, remote monitoring software, weather monitoring stations, associated sensors and all necessary accessories, complete in all respects, in accordance with the detailed technical specifications.(Refer Section V, Clause 9.2) |
| 3 | 50 kW/kVA solar inverter with multiple MPPTs with AFCI |
| 4 | 35 kW/kVA solar inverter with multiple MPPTs with AFCI |
| 5 | 25 kW/kVA solar inverter with multiple MPPTs with AFCI |
| 6 | Establishment of inverter-side PV string surge-protection and isolation boxes, including provision, installation, testing and commissioning. Each box shall have independent input and output circuits with one-to-one string correspondence, without paralleling or combining PV strings, and shall be complete with suitably rated DC isolators, DC surge-protection devices, terminals, internal wiring, cable glands, earthing terminals, identification labels and all necessary accessories for installation near the solar inverter, in accordance with the detailed technical specifications and approved drawings.(Refer Section V, Clause 9.3) |
| 7 | 6-input / 6-output PV String Surge Protection and Isolation Box |
| 8 | Establishment of inverter-side PV string surge-protection and isolation boxes, including provision, installation, testing and commissioning. Each box shall have independent input and output circuits with one-to-one string correspondence, without paralleling or combining PV strings, and shall be complete with suitably rated DC isolators, DC surge-protection devices, terminals, internal wiring, cable glands, earthing terminals, identification labels and all necessary accessories for installation near the solar inverter, in accordance with the detailed technical specifications and approved drawings.(Refer Section V, Clause 9.3) |
| 9 | 2-input / 2-output PV String Protection and Isolation Box |
| 10 | 4-input / 4-output PV String Protection and Isolation Box |
| 11 | Establishment of suitably rated AC Distribution Boards (ACDBs) with energy meters for grid-connected solar PV power plants without battery storage at various locations within IGCAR, including provision, installation, testing and commissioning, complete with all necessary accessories, in accordance with the detailed technical specifications. (Refer Section V, Clause 9.4) |
| 12 | 50 kW ACDB |
| 13 | 35 kW ACDB |
| 14 | Provision, laying, routing, dressing, clamping, termination and testing of 4 sq. mm tinned-copper, UV-resistant, double-insulated solar DC cables from the PV module strings to the PV string protection and isolation boxes and from the boxes to the respective inverter MPPT inputs.The work shall include routing through approved conduits or cable trays; polarity identification using red for positive and black for negative; ferruling and tagging; fixing with UV-resistant saddles or clamps; and termination using compatible solar DC connectors or terminal blocks, as applicable.Solar DC connectors shall be supplied as compatible male–female pairs suitable for the specified cable and equipment interfaces. Connector termination shall include crimping using the manufacturer-recommended tools, assembly to achieve the specified IP67 degree of protection, and verification of contact integrity, polarity and continuity.The item shall include all necessary connectors, glands, ferrules, tags, clamps, consumables, tools, tackles, accessories and labour, complete in accordance with the approved drawings, detailed specifications and directions of the Engineer-in-Charge. (Refer Section V, Clause 9.5) Note: The PV connectors used at each mating interface shall be of the same manufacturer, type, model and contact system. Connectors of different makes or models shall not be intermated, even where they are commonly described as “MC4-compatible.”Where the factory-fitted connector at the PV string end is not compatible with the connector provided on the outgoing DC cable or PV string protection and isolation box, the string-end connector shall be removed and reterminated using a matching connector of the same make and model as its mating counterpart. Retermination shall be carried out only where permitted by the PV module manufacturer, using the connector manufacturer’s specified stripping and crimping tools, contacts, torque requirements and assembly procedure.The completed connection shall be checked for correct polarity, crimp integrity, contact resistance, mechanical locking and the specified degree of ingress protection. Mixing of male and female connectors from different manufacturers, series or models shall not be permitted. |
| 15 | Supplying and fixing 40 mm nominal size uPVC Schedule 40 pipe for protection and routing of electrical/Solar DC cables, of make ASTRAL / PRINCE / Finolex or approved equivalent, conforming to the relevant requirements of ASTM D1785, including uPVC plain fittings conforming to ASTM D2466.The pipe shall be properly routed, cut, deburred, solvent-jointed and securely fixed with suitable corrosion-resistant clamps at intervals not exceeding 1.0 m. Where routed over floors, terraces or other horizontal surfaces, the pipe shall not rest directly on the finished surface and shall be supported on suitable concrete/masonry or approved equivalent supports and firmly clamped.Additional supports shall be provided at bends, fittings and changes in direction to prevent sagging, displacement or mechanical damage.The item shall include all fittings, clamps, supports, solvent cement, fixing accessories, necessary openings/chasing and restoration of affected surfaces, complete with inspection for proper alignment, secure fixing and unobstructed cable passage, as directed by the Engineer-in-Charge.(Refer Section V, Clause 9.6) |
| 16 | 40mm nominal size uPVC pipe of SCH 40 |
| 17 | Supply and external installation of following sizes of Heavy Duty, Hot Dip Galvanised MS ERW Conduits for Electrical & Communication System with all the required accessories like round JBs, Solid Long Bends, Check Nuts, Nipples, Couplings, Reducers, Copper Clips, Copper Conductor, GI Wire etc. as per the detailed specification. .(Refer Sec VI, Clause No.27). |
| 18 | 25mm GI Flexible Hose |
| 19 | Supply, Loading, Transportation, Unloading at site, installation, Testing and Commissioning of 1100 Volts Grade following sizes of cables in built-in trenches, on walls, poles and through embedded pipes including supply of GI spacer, clamps etc and as per the detailed specification.(Refer Sec VI, Clause No.3) |
| 20 | 4CX35 sqmm 1.1kV grade Aluminium conductor XLPE insulation flat wire armour FRLSH PVC outersheath |
| 21 | 4CX70 sqmm 1.1kV grade Aluminium conductor XLPE insulation flat wire armour FRLSH PVC outersheath |
| 22 | End Termination of the following sizes of Aluminium Conductor PVC Insulated and sheathed armoured UG Cable using Single Compression, Heavy Duty, Gland connecting the cable to the equipment such as Switches/Panel Boards etc. using Comet or equivalent make Aluminium crimping lugs as directed by Engineer-in-Charge. The rate shall include the cost of supply of Cable Gland and Lugs. The Contractor shall arrange for making holes wherever necessary for fixing cable gland. (Refer Sec VI, Clause No.10.1) |
| 23 | 3.5/4 C x 35 sq.mm |
| 24 | 3.5/4C x 50/70 sq.mm |
| 25 | Establishment of the AC power-cable interconnection between the solar inverter and the AC Distribution Board (ACDB) using 1.1 kV grade, 4-core × 25 sq. mm cable with Class 2 annealed stranded copper conductors conforming to IS 8130/IEC 60228, XLPE-insulated cores and FRLS/LSZH outer sheath.The work shall include provision, laying, dressing, testing and commissioning of the cable, together with suitable cable glands, identification tags, clamps, supports and all necessary accessories, complete in accordance with the inverter manufacturer’s recommendations, approved drawings and directions of the Engineer-in-Charge. Note: Cable end termination, including glands, lugs and associated termination work, shall be measured separately. (Refer Sec VI, Clause No.3) |
| 26 | End Termination of 4-core × 25 sq. mm copper conductor cable, including supply and fixing of four numbers 25 sq. mm tinned-copper compression lugs, suitably sized PG-36 heavy-duty nylon cable gland of approved make, gland locknut, sealing washer, core ferrules, identification tags, heat-shrink sleeves and all necessary accessories, including cable preparation, crimping, dressing, tightening and testing, complete as per the manufacturer’s recommendations and directions of the Engineer-in-Charge. (Refer Sec VI, Clause No.10.1) |
| 27 | Installation of following size of 1100V grade FRLS insulated copper conductor wires in existing conduits/inside switchboards/on surfaces etc including supply of wire, spacer and clamp and installation wherever required.(Refer Sec VI, Clause No.18) |
| 28 | Wiring with 1 Run of 16 Sq.mm Copper wire |
| 29 | Establishment of hot-dip-galvanized steel cable-tray systems using trays of size 150 mm (W) × 50 mm (D) × 2 mm thickness, complete with matching removable covers. The work shall include provision, installation, alignment and fixing of coupler plates, nuts, bolts, washers, clamps, supports, brackets and all necessary accessories, together with cutting, drilling and jointing, complete in accordance with the approved drawings, detailed specifications and directions of the Engineer-in-Charge. (Refer Sec VI, Clause No.19) |
| 30 | Establishment of corrosion-resistant bonding and earthing connections for aluminium-framed solar PV modules using lay-in grounding lugs, including provision, installation, testing and commissioning. The grounding lugs shall be of tin-plated copper or other approved corrosion-resistant material, compatible with the PV module-frame material and suitable for the specified earthing-conductor size.The work shall include SS304/SS316 fasteners, approved anti-oxidant joint compound, surface preparation, drilling where permitted by the module manufacturer, mechanical fixing, conductor termination, tightening to the manufacturer-specified torque, identification and electrical-continuity testing. The grounding arrangement shall be tested or listed for bonding applications and suitable for outdoor coastal service, complete with all necessary accessories, consumables, tools and labour, in accordance with the approved drawings, detailed specifications, module manufacturer’s recommendations and directions of the Engineer-in-Charge. (Refer Section V, Clause 9.14) |
| 31 | Supply and installation of the 10 SWG Copper Wire of copper wires in built in trench as per the detailed specification.(Refer Sec VI, Clause No.12.8) |
| 32 | Supply, fabrication and installation of the following size of Hot dip Galvanised GI Flats in Built in trenches on walls, poles, RCC Concrete and through embedded pipes as per the detailed specification. No cutting or drilling permitted after galvanisation. (Refer Sec VI, Clause No.12.9). |
| 33 | 25 X 3 mm GI flat |
| 34 | Establishment of 3 m high, free-standing interception masts/vertical air terminals for the lightning protection system, including provision, installation, alignment and securing of non-penetrating bases, precast concrete counterweights, mast supports, clamps, fasteners and all necessary accessories. Each mast shall be provided with a suitable bimetallic connector for connection to a 10 mm diameter solid round conductor and shall be completed in accordance with the approved drawings, relevant standards and directions of the Engineer-in-Charge. (Refer Section V, Clause 9.17) |
| 35 | Establishment of lightning-protection conductor network using 10 mm nominal-diameter solid round aluminium conductor, including supply, installation, routing, alignment and fixing with UV-resistant, weatherproof conductor holders suitable for flat-roof installation, complete with associated fixing hardware and accessories.The conductor shall be secured at the specified spacing and installed in accordance with the approved drawings, relevant standards and directions of the Engineer-in-Charge.Note: Straight, T and cross connectors for joining/branching the conductor shall be measured separately under Schedule Item 21.00. Connections to the existing lightning-protection network/metallic structures shall be measured separately under Schedule Item 20.00. (Refer Section V, Clause 9.18) |
| 36 | Supply and installation of suitable clamping connectors for connecting 10 mm nominal-diameter solid round aluminium lightning-protection conductor to metallic structures, flat metallic strips or MET, including bimetallic connectors wherever required for dissimilar-metal connections, complete with bolts, nuts, washers and all necessary fixing accessories, suitable for outdoor lightning-protection applications, as per approved drawings, relevant standards and directions of the Engineer-in-Charge.(Refer Section V, Clause 9.19) |
| 37 | Supply and installation of cross connector/ straight connector/T-connector suitable for interconnecting 10 mm nominal diameter solid round conductors in the lightning protection system, complete with bolts, nuts, washers and all necessary fixing accessories, suitable for outdoor application, as per approved drawings, relevant standards and directions of the Engineer-in-Charge.(Refer Section V, Clause 9.20) |
| 38 | Supply and Installation of MS Brackets, Supports, Frame work, Clamps, Base Channels, etc. fabricated out of angle / Channel / Rods etc. The rate quoted shall include the cost of fabrication / welding, cleaning and painting/ galvanising as follows including supply of required, fasteners, nuts, washers, etc. (Refer Sec VI, Clause No.11). |
| 39 | GI: MS fabrication With hot dipped galvanising. |
| 40 | Providing and fixing double Tubular scaffolding system using H-Frames / APS system or (cup lock type) on the exterior side made with 40mm dia M.S. tube 1.5m centre to centre horizontal and vertical tubes joining with cup and lock system with M.S. tubes, M.S. tube challies, M.S clamps and M.S staircase system in the scaffolding for working platform etc. and maintaining it in a serviceable condition for the required duration as approved and removing it thereafter. The scaffolding system shall be stiffened with bracings, runners, connection with building etc. wherever required for inspection of work at required locations with essential safety features for the workmen etc. complete as per directions and as approved by the Engineer -in-Charge. Note : 1. The elevation area of the scaffolding shall be measured for payment purposes. 2. The payment shall be made once irrespective of duration of scaffolding. 3. The scaffolding system drawing shall be got approved by Engineer-in-Charge. 4. The contractor has to observe all safety procedure while working on heights as per I.S. 3696 (Part-I) (Safety Code for scaffolds). 5. Screen of suitable material shall be provided to the full height of scaffolding and securely tied to protect falling objects coming out during the work is in progress. 6. Necessary aluminium / M.S. ladder shall be provided at the cost of the contractor, to the full height of scaffolding at required location around the building to enable Departmental Supervisor/Engineer climb up and closely watch the repair work of the building. |
| 41 | Careful electrical isolation, verification of isolation, and disconnection of all incoming Solar DC strings and outgoing DC cables from the existing rooftop Array Junction Box (AJB). The scope includes unbolting and dismantling the AJB from its mounting structure/wall; permanently identifying all disconnected cables with string number, polarity and destination; safely insulating and weatherproofing exposed cable ends using suitable end caps and insulating tape; and safely lowering and transporting the dismantled AJB to the designated departmental store within IGCAR, Kalpakkam, without damage to the equipment, cables, roof or supporting structures, complete as directed by the Engineer-in-Charge. (Refer Section V, Clause 9.22) |
| 42 | Careful electrical isolation, shutdown, and disconnection of all incoming DC strings, outgoing AC power cables, and data wires of the existing grid-tied solar inverter (up to 50 kW capacity), including removal of mounting brackets and weather canopies. Scope includes verifying dead circuits, insulating open cable ends with PVC tape, labeling/tagging all disconnected lines with permanent ferrules for future tracking, wrapping the inverter chassis in protective packaging, and safely transporting/depositing the dismantled equipment to the designated central departmental stores inside IGCAR, Kalpakkam, without causing structural or component damage, complete as per the direction of the Engineer-in-Charge. (Refer Section V, Clause 9.23) |
| 43 | Replacement of rusted, corroded or damaged bolts, nuts and washers in existing Solar PV module mounting structures, including careful removal of existing fasteners and cutting/extraction of seized or jammed bolts wherever necessary, with adequate protection to installed Solar PV modules, DC cables and associated equipment. The scope includes supply and fixing of new hot-dip-galvanized Grade 8.8 bolts complete with matching nuts and two washers; cleaning and preparation of connection surfaces; proper positioning, alignment and tightening; provision of all necessary labour, tools and tackles; and disposal/handing over of dismantled materials. Any galvanizing damaged during removal or installation and any exposed bare-steel portion shall first be restored using an approved zinc-rich repair coating. After installation and final tightening, two coats of approved bituminous anti-corrosive coating suitable for outdoor coastal service shall be applied over the exposed portions of bolts, nuts, washers and repaired areas, complete as per technical specifications and directions of the Engineer-in-Charge.(Refer Section V, Clause 9.24) |
| 44 | HDG 8.8 GRADE M16 × 70 mm galvanised iron bolt complete with nut and two washers |
| 45 | HDG 8.8 GRADE M16 × 45 mm galvanised iron bolt complete with nut and two washers |
| 46 | HDG 8.8 GRADE M12 × 45 mm galvanised iron bolt complete with nut and two washers |
| 47 | Dressing, neat grouping, alignment and secure fastening of existing Solar DC string cables underneath PV module structures or within designated cable-routing channels. The scope includes rerouting and arranging loose, sagging or improperly routed cables away from sharp structural edges and other locations liable to cause mechanical damage; securing the cables using heavy-duty UV-stabilized Nylon 66 cable ties suitable for outdoor/coastal service and SS304 cable clips, as applicable; providing adequate support to prevent looping, sagging or wind-induced movement without imposing undue mechanical stress on the cables or connectors; providing permanent UV- and weather-resistant identification markers indicating string number, polarity and destination/MPPT identification; and carrying out necessary inspection and electrical safety tests, complete as per the technical specifications and directions of the Engineer-in-Charge. (Refer Section V, Clause 9.25) Please Enable Macros to View BoQ information |
AI Tender Summary
Tender Timeline
Sep 01, 2026
11:30 IST
Tender Published
Tender notice published.
CompletedSep 25, 2026
17:00 IST
Bid Submission Deadline
Online submission via eProcurement portal.
Upcoming · 20 daysSep 30, 2026
Bid Opening Date
Technical bids will be opened and evaluated.
Upcoming · 25 daysTender Documents
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