CA NO CWE/PAT/T-38/2021-22 PROVN OF SOLAR POWER PLANT 25 KVA AT MIL STN SANGRUR AND NABHA UNDER GE SOUTH PATIALA

Amount

Design, procure, erect install, test and commission including connecting to local utility grid, roof top mounted on Grid connected solar photovoitaic plant of 25 KVA / 20 KW capacity including solar photovoitaic Module, DC Cabling, Module Mounting Structures,, Combining Boxes, Lightning Protection of SPV modules, module mounting structure, connecting wiring in between the system, AC/DC distribution box, Earthing kit and other accessories, string inverter of 20 KW at Mil Stn Sangrur.

Design, procure, erect install, test and commission including connecting to local utility grid, ground mounted on Grid connected solar photovoitaic plant of 25 KVA / 20 KW capacity including solar photovoitaic Module, DC Cabling, Module Mounting Structures,, Combining Boxes, Lightning Protection of SPV modules, module mounting structure, connecting wiring in between the system, AC/DC distribution box, Earthing kit and other accessories, string inverter of 20 KW at Mil Stn Nabha.

Item No 01 and 02 here in before shall consist of the following main components:- Poly Crystaline Silicon Solar Photovolaic 20,000 Wp, not less than 20 KW capacity having efficiency 16.28% min under standard conditions, form fill factor more than 0.74, plant performance ratio > 75% , made of high transmitivity glass front surface and it shall give high encapsulation gain ( transmittance above 90% and bending less than 0.3%). The electrical parameters of SPV modules under standard test condition of irradiance 1000 W/sqm2, AM 1.5 Spectrum and temp 25 degree Celsius shall be as under Max Peak Power Pmax > 315W Voltage at Max Power :>38.81V Current at Pmax: >8.12 A Short Circuit Current : > 8.84 A Open Circuit Voltage: >45.94 Module Efficiency: > 16.28% .

(a) Rated outputof the modules shall have positive tolerance of 3-5% and no negative tolerance is allowed. (b) It shall perform satisfactority in RH 85% with temperature up to +85 degree C and should withstand wind of 150 kmph on the surface of panel. (c) PV modules shall be warrented for their output peak watt capacity, and it shall not fall of its initial value below 90% in first 10 year end and 80% after the end of 25 years. (d) Each module shall have RFID tag encapsulated with solar cell bearing following details: Name of manufacture of SPV Module, Name of Manufacturer of solar cell and module) country of Origin ( both cell and module) Peak wattage, Im, Vm and fill factor of the module IV curve of module. (e) The temperature coefficient of the module shall not be more than 0.50% degree celcius.

(f) PV modules must confirm to latest edition of IEC 61215/ IS 14286. In addition the modules must confirm to IEC 61730 Part I and II for construction and testing & safety qualifications and confirming to IEC 62804 PID. (g) It shall also be in confirmity to latest minimum technical specification issued by MNRE from time to time. Modules should be of sufficient cell configuration and should be of MNRE approved companies/agencies in category/ rating 'SA-1A' . (h) Provision of earting and earth strip/ cable etc for earth of solar Pvmodule/ array etc as per latest IS/MNRE norms to be provided and cost of the same is deemed to be included in the item and no extra amount will be paid to the contractor on this account. (i) Both cell and SPV modules shall be made in India and must conform to DSR norms of MNRE (j) The minimum net annual generation shall be 1500 units per kilowatt.

(k)DC Cables & AC Cables: Suitable size of XLPE insulated tinned copper cable of solar grade, 1100 volt and UV resistant for outdoor installations confirming to IEC 60227/15694 & 60502/ is 1554 (Pt& I&II) of minium size as per OEM specification. All cables and connectors for use of installation shall be of solar grade which can withstand harsh environmental conditions including high temperature, UV radiations, rain, dirt,burial and attack by moss and microbes for 25 years and voltage as per latest IEC/IS. All the cables/wires shall be provided with UV resistant printed ferrules for DC side .The size of the cable shall be such that average voltage drop at full power from PV module to inverter shall be less than 1.5%. The AC cables along with AC DB with necessary arrangement to Connect with the existing power supply to be done. The size of XLPE LT cable To be got approved from GE. Suitable electronic smart meter to be fixed to measure generation of electricity. Cable batch no,drum no, IS code and size and make shall be metioned on every one meter or as per OEM practice .The wiring of the module interconnection shall be in suitable size UPVC/HDPE pipe. The cost of interconnecting DC copper cable, and earth work for trenches suitable to accommodate solar grade cables from SPV module upto inverters are included in the item.

(l) Module Mounting Structure: Design, procure, fixing, support structure made of hot dipped galvanisized iron with min 85 micron thickness including necessary PCC foundation and associated work and fixing mounting arrangement suitable for SPV modules so as it can withstand wind speed of 150km per hour. The array mounted structure has to be so designed that it occupies minimum space without sacrificing the output of SPV panels, Nuts, bolts,mounting structure including module mounting structure shall have to be adequately protected from atmosphere and weather prevailing in the area. All the modules fixing fastners shall be of stainless steel of grade SS316.The module mounting structure to be fixed tilt to optimise the maximum generation in a year. MMS design shall be supported with stadpro report and submitted for the approval of the acepting officer. Cost of all equipments, copper strip up to earth test point and earthing etc are included in this item. The cost of sufficient earthing for lightning protection is included in this item and no extra payment will be made to the contractor on this account.

(m) String Inverter: Procure, fixing, testing and commissioning of 20 KW -1 No 3 phase 460 volt, THD< 3%, at nominal power inverter suitable to convert DC power of solar PV module/arry/ to AC for further feeding to grid confirming to IEC 61683 for efficiency, IEC 62109 or equivalent for safety and IEC 62093 for reliability. The input DC technical specification of 10 KW inverter are as under: Input (DC) DC Voltage Range: 575 - 850V Max DC Voltage: As per standard Nominal Power : 20 kW Max output power : 20 kW Nominal AC current : as per standards Nominal OUTPUT VOLTAGE: 440V Output Frequency : 50/60 Hz Harmonic Distortion current : < 3% Efficiency : 98.3%

Operating temperature up to 85 degree centigrade. The inverter shall have minimum IP 65 protection, ground fault monitoring, grid monitoring, protection against anti-islanding, DC reverse polarity, AC and DC short circuit current and over current, AC and DC over voltage and temperature. The inverter shall adjust the frequency levels to suit the grid. The inverter shall be self commulated with pulse Width Modulation (PWM) technology and shall be capable of synchronise maximum with in one min. Maximum power point Tracker (MPPT) confirming to IEC 62093 shall be integrated in the inverter to maximum the energy drawn from the PV array. The inverter shall have suitable nos of protected inputs (as per design) and outgoing shall be protected by Surge protections (MOVs). The inverter shall be provided with protection class I (IEC 62103). The inverter should have MODBUS, PROFIBUS, ETHERNET communication ports. The inverter shall include appropriate self protection and self diagnostic feature to protect itself and the PV array from the damage in the event of the inverter componant failure or from parameters beyond the inverters safe operating due to internal and / or external causes. Inverter shall have protection arrangement against ground leakage faults, over voltage, (SPD) and over current. Inverter shall interface with Ethemet, RS485, irradiation and temperature sensor, Auxilary equipment, power supply and external stop signal.

GAGAN TRANSMISSIONS PVT LTD

R D Bansal

Arneja Builders

Garg Engineers