SPECIAL REPAIR TO SOLAR POWER PLANT AT AIR FORCE STATION JAISALMER

Repair/ major overhauling of Grid connected/off load type 250 KWp capacity solar PV plant ground mounted after disconnecting of all strings, testing of solar panel for its serviceability and removal of damaged or faulty solar modules from their existing mounting structures in solar power plant as part of the restoration process, testing of AC string, testing of DC strings, connector, connecting links, refixing of serviceable string, and reconnecting and assembling of solar system complete all as directed at site as per conditions prevailing at Air force station Jaisalmer (Rajasthan) maximum tempreture rise upto 50 degree celscius to considered for the following compnents/Sub System and meeting the specification at site as per eixsting 250 KWp SPV plant at Air force Station Jaisalmer complete all as specified and directed by Engg-in-charge.

Note : 1. The contractor shall identified defective panels & carefully dismantle defective panels , ensuring no damage to the adjacent modules, mounting frames, cables, or electrical connections. 2. All electrical connections shall be properly disconnected and insulated to prevent any short circuits or hazards and proper tools and lifting equipment shall be used to safely detach the panels 3. The removed modules shall be stacked safely in a designated storage area as directed by engg-in-charge 4. Major Spare parts as required to make the solar Power plant as listed below shall be measured and paid seperately. 5. All spare parts required to make the solar plant functional except below shall be deemed to be included in unit quoted rates.

M&L for replacement of unserviceable solar module panel, 250 Wp, Model Eldora VSP.60.250.03 complete all as per existing and Re-design (to be vetted by Engr-in-charge.), supply, installation, testing and commissioning of Solar PV Modules which having comptable match with existing solar pv plant system :- Each Module consist of min 250 wp, poly- crystalline silicon with positive tolerance of 3-5% & no negative tolerance is allowed,with minimum 1100 mm cable length. Module efficincy >17%, fill factor>0.7, module will be free of PID, module connector suitable for MC4/Bizlink and jucntion box with minmimum IP 67 rating. Module NOCT (Nominal operating cell temperature) will be 45±3°C with temperature coefficient of power <0.4%/°C, and will be suitable for operation from -20°C to +60°C ambient temperature.

Modules will be combined to make array & string of panels to maximize power output along with supply and installation of necessary accessories like fuses, etc The PV modules used must qualify to the latest edition of IEC PV module qualification test or equivalent BIS standards. PV modules must be tested and approved by one of the IEC authorized test centers.Module Warranty The manufacturer should provide warranty the Solar Module(s) to be free from the defects and/or failures specified below for a period not less than twenty five (25) years from the date of commissioning.All photovoltaic modules should carry a linear performance warranty from second year.

The solar PV modules offered should not degrade more than 2.5% for first year and not more than 0.7% from second year of its rated power. Guranteed electrical degradation of power generated not exceeding 20% of the minimum rated power over the 25 year period and not more than 10% after ten years period of the full rated original output. Warranty against manufacturing defect, raw material, workmanship, inspection and testing procedures shall be 5 years from the date of commissioning .

The PV Modules should comply following IEC:- IEC 61215/BIS 14286, IEC 61646 / Equivalent BIS , IEC 62108 / Equivalent BIS , IEC 61730(Part I & II) / Equivalent BIS , IEC 61701 / BIS 61701 , IEC 600068-2-68.

NOTE: (A) To obtain 250 KWp minimum required Numbers of poly-crystalline silicon solar PV modules at standard test condition , plant performance ratio more than or equivalent to 70% & made of high transmittivity glass and glass front surface shall give high encapsulation gain. (transmittance above 90% and bending less than 0.3%) Glass with anti reflective coating, excellent performance in low light, torsion and corrosion resistant with anodized aluminum frame.Electrical parameters of 250 Wp solar PV module under STC of irradiance 1000 W/m2 , AM 1.5 Spectrum& cell temperature 25degree C will be as under AS PER EXISTING - Max Peak power Pmax :>250 Wp Current at Pmax Ipm : 8.18 A Voltage at Pmax Vpm : 30.58 Volt Short circuit current Isc : 8.70A Open circuit voltage Voc : 37.45 Volts DIMENSION :1639X982X36MM

(i) Each PV module & solar cells should be manufactured indigenously i.e.Indian made & should be BIS approved & IEC certified. The bidder shall produce all the Test ertificate for each panel from manufacturer & GE shall verify certificates from the issuing agency. The contractor shall procure & install module and cells of the Indian manufacturer the department reserve the right to inspect the manufacturing facility of OEM during the process of manufacturing of cells and modules. (ii) It shall perform satisfactorily in relative humidity 85 ± 5% with temperature -10 °C to +85°C (Cell) and should withstand wind 150 Km/Hr on the surface of the panel.

(iii) PV modules must be warranted for their output peak watt capacity, which shall not be less than 90% of the initial value at the end of 10 years and 80% of the initial value at the end of 25 years. (iv)The contractor shall submit the warranty to GE on non-judicial stamp paper of the appropriate value for the enforceable warranty of SPV modules. For the purpose of giving this warranty, the contractor may enter into suitable MOU with the indigenous manufacturer. GE shall verify the warranty and the date of its validity & shall convey its acceptance in writing.

(iv) Each module shall have RFID tag encapsulated with Solar Cells bearing the following details. RFID reader will be provided by contractor. ● Modules shall be deployed with RFID tag inside lamination as per MNRE guidelines ● Name of manufacturer of PV module ● Name of manufacturer of solar Cell ● Month and year of manufacture (Separated for cell & module) ● Country of origin (separately for solar cell & module) ● Peak wattage, Im, Vm and fill factor of the module. ● Date of year of obtaining IEC PV module qualification certificate including the test lab issuing IEC certificate. ● Unique Serial No and model No of Module. ● I-V curve of Module

(v) Provision of earthing & earth strip/cables etc. for earth for solar PV module/Array etc. as per latest IS/MNRE norms to be provided and the cost of the same is to be included in this item and no extra amount will be paid to the contractor on this account. (vi) Every module must have by pass diode of suitable capacity. (vii) PV module must conform to latest edition of IEC 61215/IS14286. In addition, the modules must conform to IEC 61730 Part-I & II for construction and testing & safety qualification & conforming to IEC 62804 PID. (viii) It shall also in conformity of latst minimum technical specifications issued by MNRE from time to time.Module should be of MNRE approved Companies/agencies in catagory/rating ''SA-1A''

Note -(B) • The new solar PV modules to be supplied shall conform to the parameters of the existing installed solar modules 250 Wp, Model Eldora VSP.60.250.03 as mentioned or shall be of a compatible or higher efficiency without causing any mismatch issues in the system performance. • In case the exact model is unavailable, the contractor shall propose an alternate module of the same or better performance, subject to approval by the Engineer-in-Charge. • The new modules shall be compatible with the existing system voltage, current, and mounting structure, ensuring minimal performance losses due to mismatch. • The contractor shall ensure compatibility between new and old modules through proper string configuration, DC optimizers (if required), or any other technical adjustments needed to minimize mismatch losses.

Supply and fixing for module mounting structure made out of galvanised iron, equal angles, nuts bolts, flat iron, gusset plate, complete all as directed by Engineer-in-Charge. (Details in ps clause)

M&L for the cleaning of the solar power plant area within the fenced premises by cutting and removing bushes, grass, and unwanted vegetation to prevent shading and obstruction of solar panels. The collected waste shall be disposed of in a designated low-lying area outside the plant, ensuring no on-site burning. The contractor shall use manual or mechanical tools and ensure safety compliance for workers. Cleaning shall be carried out as directed by the Engineer-in-Charge, including clearing pathways and drainage channels to maintain site accessibility. Note:- (i) All necessary manpower, tools, and disposal arrangements shall be the contractor’s responsibility. (ii) Work must be executed during daylight hours, avoiding any interference with solar operations. (iii) Any damage caused during execution shall be repaired at the contractor’s expense. (iv) Measurement and payment shall be based on the cleaned area, approved by the Engineer-in-Charge. (v) The Engineer-in-Charge shall monitor the work and has the authority to reject unsatisfactory execution, with completion required within the stipulated timeline per cycle.

M&L wet cleaning of solar modules in solar power plant to ensure optimal power generation. The cleaning process shall involve the removal of accumulated dust, dirt, bird droppings, and other contaminants using clean water.Cleaning shall be performed using soft brushes, microfiber cloths, or approved non-abrasive methods to prevent scratches or surface damage. Note:- (i) The work must be carried out in a systematic manner to avoid disruption to the plant's infrastructure, with careful handling of wiring and support structures. (ii) The contractor shall arrange for all required manpower, equipment, and water resources while ensuring compliance with environmental and site-specific operational guidelines. (ii) The contractor shall ensure that all necessary safety precautions are followed, including the use of PPE, insulated tools, and adherence to electrical safety protocols.

M&L for the chemical cleaning of solar modules, involving two cleaning cycles to ensure the removal of stubborn dirt, dust, bird droppings, and other contaminants that may affect the efficiency of the panels. Note:-(i)The cleaning process shall be carried out without the use of any harmful chemicals that could damage the module’s anti-reflective coating or impact its long-term performance. (ii) The contractor shall use approved, non-corrosive, and biodegradable cleaning solutions, along with soft brushes, microfiber cloths, or other non-abrasive cleaning tools to prevent surface damage. (iii) The cleaning shall be executed in a systematic manner, ensuring uniform application of the cleaning solution, followed by thorough rinsing with clean or deionized water to prevent residue buildup. (iv)The contractor shall ensure strict adherence to safety protocols, including the use of PPE, insulated tools, and compliance with site-specific electrical safety measures. (v) All necessary manpower, cleaning agents, tools, and equipment shall be arranged by the contractor, ensuring environmental and operational compliance..

M&L for Replacement of old unserviceable string cables DC 4-6 sqmm, single core with connector complete with DC Cables, HDPE Conduit ISI UV resistant, and supporting Accesories :- One Core 6 Sqmm Cu 1.5kV, UV protected XLPO Solar Grade Cable Type 1. IS-1554 Part-1,Temp range:- 10Deg C to +120Deg C, Voltage range-1.5KV,excellent resistance to heat, cold, water, oil, UV radiation, flexible. Cable should be annealed High conduction copper conductor with XLPO insulation, UV protected. XLPO having working voltage -1500V, UV resistant for outdoor installation IS/IEC 69947, For AC/DC cables Voltage drop= 2% limited.

Note-The DC cables from the SPV module array shall run through a UV-stabilized PVC conduit pipe of adequate diameter with a minimum wall thickness of 1.5mm. All cables and connectors for use for installation of solar field must be of solar grade which can withstand harsh environment conditions including High temperatures, UV radiation, rain, humidity, dirt, salt, burial and attack by moss and microbes for 25 years and voltages as per latest IEC standards. DC cables used from solar modules to array junction box shall be solar grade copper (Cu) with XLPO insulation and rated for 1.1kV as per relevant standards only. Cable Routing/ Marking: All cable/wires are to be routed in a HDPE Conduit ISI UV resistance and suitably tagged and marked with proper manner by good quality ferule or by other means so that the cable easily identified. In addition, cable drum no. / Batch no. to be embossed/ printed at every one meter.

M&L for replacementof branch, MC4 Male/Female connectors set compatible with module connectors with min of IP66 rating and design with suitable lugs for 6 Sqmm Cable complete all as specified and directed. Make:-Bizlink / Elcom /Amphenol

M&L for checking/testing (if considered repairable on testing) then repair and overhauling of existing String Monitoring Boxes (SMBs) as per the existing design by inspecting, diagnosing faults, removing dust/dirt, repairing or replacing damaged components such as terminal blocks, fuses, surge protection devices (SPD), isolators, diodes, MC4 connectors, and ensuring proper reconnection of all incoming DC strings from solar panels with correct polarity and secure termination.also including tightening all electrical connections, testing for proper voltage output, insulation resistance, and surge protection functionality, followed by securely sealing the SMB enclosure to maintain IP65/IP66 protection, ensuring complete restoration of functionality complete all as specified and directed By Engg-in-charge. (Note :- The contractor is advised to visit the site before quoting to assess the exact scope of work, verify the existing system configuration, and Proper evaluation of site conditions will be the responsibility of the contractor to avoid any discrepancies during execution.On testing if existing SMBs found unserviceable the same shall be replaced by the contractor under relevant item of boq

Supply and fixing in replacement of junction boxes (SMBs) with suitable numbers as per existing design of inputs and suitably rated output, ensuring seamless integration with the existing 250 KWp SPV plant. Each SMB shall be equipped with separate DC fuses for both (+) and (-) on each input string to ensure overcurrent protection, along with an appropriately rated DC isolator on the output terminal for enhanced safety. The SMBs shall be designed with at least one spare input terminal for future scalability. Each junction box shall feature an RS-485 communication port to facilitate real-time monitoring of individual string currents, bus voltage, and internal temperature, ensuring efficient system performance tracking. The enclosure of the SMBs shall be constructed using high-quality FRP/Thermoplastic material with IP65-rated protection in compliance with IEC 62208, making them dustproof, waterproof, vermin-proof, UV-resistant, and fire-retardant.

The SMBs shall be equipped with overvoltage protection, integrated surge protection devices, and shall be connected to a maintenance-free earthing system in accordance with relevant standards. The entire installation shall match the existing system configuration, ensuring compatibility with the plant’s electrical infrastructure. The contractor shall be responsible for supplying all necessary components, accessories, mounting hardware, and associated wiring to complete the installation in a fully operational state (Note :- The contractor is advised to visit the site before quoting to assess the exact scope of work, verify the existing system configuration, and ensure compatibility with the replacement SMBs. Proper evaluation of site conditions will be the responsibility of the contractor to avoid any discrepancies during execution.)

Supply and fixing solar inverter 60 KVA three-Phase transformer less Grid-Tie Solar Inverter with 3 MPPTs (22,000 W per MPPT), Maximum Efficiency of 98.6%, and MPPT Efficienc

EACH JOB

It operates within a DC input voltage range of 250V - 950V, with a full power MPPT range of 530V - 800V, a start-up voltage of 350V, and a rated input voltage of 600V. The inverter supports a nominal grid voltage of 220/380V, 230/400V, or 240/415V, with a grid voltage range of 310V - 480V and a frequency range of 45Hz - 55Hz. It delivers a maximum AC power of 60,000 VA, a rated power of 60,000 W, and a maximum output current of 90A, with an adjustable power factor of ±0.8 and a THDi of <3%. The inverter achieves a maximum efficiency of 98.6%, a European weighted efficiency of 98.4%, and an MPPT efficiency of >99.9%, with a self-consumption of <1W at night. It includes advanced safety features such as DC reverse polarity protection, an integrated DC switch, anti-islanding protection, RCMU, ground fault monitoring, and Type II surge protection (PV standard, AC optional). For communication and monitoring, it supports RS485, WiFi/GPRS (optional), SD card, and a multi-function relay, with operational data storage for up to 25 years. Designed for harsh environments, it operates within a temperature range of -25°C to +60°C, supports altitudes up to 4000 meters, and has an IP65-rated enclosure for dust and water resistance. The inverter is equipped with fan-based cooling, maintains a noise level of <60 dB, and features an LCD display. and comes with a 10-year warranty.

Certifications Required:The inverter must be BIS-certified and IEC 62116, IEC 61727, IEC 61683, IEC 62109-1/2, IS 16221, and other relevant standards. complete all as specified and directed MAKE: HAVELLS ENVIRO GTi 60KT or Equivalent

M&L for overhauling and making the LT panel fully functional by thorough cleaning, removing accumulated dust, inspecting and replacing faulty fuses, servicing MCCBs, and reconnecting unserviceable cables with new cable lugs, nuts, bolts, and cable glands. Work includes checking and ensuring proper earthing connections, replacing damaged or corroded earthing links, and securing all electrical connections. Any defective components such as MCCBs, contactors, relays, or terminal blocks found unserviceable shall be replaced with new components of the same rating and specifications. After completion, the entire system shall be checked and verified by the Engineer-in-Charge to ensure proper functionality Complete all as specified and directed by the Engineer-in-Charge Note:No extra payment shall be made for replacing faulty components, as the cost of all required repairs and replacements is deemed included in this item.

(a) Excavation and earth work for drilling hole for electrode in any type of Soil. (b) PCC pit in cement concrete 1:2:4 type B-1, Pre cast RCC cover with suitable handle 40 mm thick in PCC 1:2:4 type B-1, reinforced with welded steel wire fabric weighing not less than1.87 Kg/ Sq meter. (c) Funnel with watering pipe of GI 20 mm nominal bore light grade and lugs etc complete all as specified and directed (d) 50 mm nominal bore medium grade GI protection pipe 5 meter long for protection of earthing lead complete all as specified and directed. (e) Requisite quantity of common salt and charcoal. (f) Testing of earthing.

Material and labour for providing cement concrete 1:2:4 type B-1 (using 20 mm graded crushed stone aggregate) for coping of poles/pipe/ platform/ paths etc including necessary form work and finished surfaces in and incl breaking old PCC complete

Design, supply, installation, commissioning & testing of the solar plant metering system includes the design and integration of two 3-phase, 4-wire, Class 0.5, CT/PT-operated static energy meters in series, as per government regulations for systems over 200 kW, along with a net meter to measure the energy balance between production and consumption. The system also includes 16 current transformers (CTs) with a ratio of 500/5 for accurate current measurement. The supply covers the energy meters, CTs, wiring materials, MCCBs, and other necessary components. Installation involves setting up the meters, CTs, wiring, and MCBs, ensuring compliance with safety standards. Commissioning includes SCADA integration.This ensures a fully functional, compliant, and efficient metering system for optimal monitoring and management of the solar plant.

Design, supply, installation,commissioning & testing of Weather Monitoring System at Solar Power Plant which is Fully compatible with the SCADA system. The weather monitoring system will ensure accurate environmental data collection and integration with the SCADA system for enhanced plant performance. The system must include: 1. Solar Radiation Sensor: - Model: Sunpyra 24 or equivalent , 3m cable, pole mounting. 2. Wind Speed Sensor: - Model: WS24-02, 3m cable, mounting accessories. 3. Wind Direction Sensor: -Model: WD24-02, 3m cable, mounting accessories. 4. Ambient Temperature Sensor: - Model: HSSR-01, 3m cable, pole mounting. 5. Module Temperature Sensor: - Model: PT100, 3m cable. 6. Data Logger: - Ethernet-enabled with Modbus RTU/TCP communication for SCADA integration. 7. Pre-Wired Enclosure: - Model: AERAN, includes SMPS, SPD, DIN rail mounting, 5 ÷ 36 Vdc, 0.5 A @ 12 V, pole mounting. ○ Requirements: ● Fully compatible with the SCADA system.

.The contractor will provide MOU from SCADA vendor for providing comprehensive five (5) years of technical support for the supplied system, covering software updates, fault rectification, and remote/onsite assistance as required. The contractor however will fully responsible for ensuring uninterrupted technical support throughout the support period. The contractor will also submit a notrised undertaking on a non judicial stamp judicial paper (Minimum Rs 100) explicitly stating that “The contractor shall remain solely responsible for ensuring uninterrupted technical

support throughout the support period. In case of failure of the SCADA system the MOU vendor and the contractor shall arrange alternate support at no extra cost to the Department. This declaration shall be treated as a binding part of the contract. If the SCADA system got faulty, the contractor shall get it repaired the SCADA vendor within 48 hours from the time of intimation of fault to the contractor, failing which, the SCADA system will repaired from other agency by the Department and charges of the same will be recovered from the contractor