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| 1 | Designing, Supply, installation, testing and commissioning of topographical on grid connected roof top Solar Photo Voltaic Module Plant of 140 KW capacity (On-Grid connected Bldg roof top solar PV generation on roof Building No.P-556,544,558,557,547,550,553,561,563,564 & 565 without battery) complete with the following accessories at conditions prevalent at AFS ABOHAR under GE (AF) Bhisiana, Punjab. Grid connected open access solar PV generation including solar grade DC copper cable upto array junction box, module, array combining boxes, lightening protection of SPV module, civil and general wks, mounting structure, inverter as power conditioning unit, consisting of all requisite accessories (BOS-Balance of System).Make: (a) Monocrystalline PV Modules & PV Cells: TATA / BHEL / Adani / HMV / Waaree Energies Ltd / Vikram / Emmvee / Premier energies.(b) Solar Inverter Power Conditioning Unit ( PCU) : DELTA / SUNGROW / GROWATT / POLYCAB / HAVELLS / LUMINIOUS. |
| 2 | Sl Item 1 Contd….(A) Monoperc half cut DCR Solar Photovolaic Modules of 325 Wp or more (module power and number of modules to be selected according to available roof top area & adequate walkway), minimum cell efficiency of 21 to 22% at standard test condition and form fill factor more than 0.76, 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 modules shall have the following features :-(a) The electrical parameters of SPV modules under standard test condition of irradiance 1000 W/sqm, AM 1.5 Spectrum and temp 25 degree Celsius shall be as under:-(i) Max Peak Power Pmax : 325 Wp or more(ii) Voltage at Max Power : > 37 V(iii) Current at Pmax : > 9 A(iv) Short Circuit Current : > 8 A(v) Open Circuit Voltage : > 45 V(vi) Module Efficiency : > 16 %(b) Rated output of the modules shall have positive tolerance of 3-5% and no negative tolerance is allowed.(c) It shall perform satisfactorily in RH 85% with temperature up to +85 degree C and should withstand wind of 200 kmph on the surface of panel.(d) PV modules shall be warranted 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. |
| 3 | Sl Item 1 Contd….(e) Each module shall have RFID tag encapsulated with solar cell bearing following details :- (i) Name of Manufacturer of SPV Module(ii) Name of Manufacturer of Solar Cell(iii) Month and year of Manufacturing (seperately for cell and module)(iv) Country of Origin (both cell and module)(v) Peak wattage, Im, Vm and fill factor of the module(vi) Date of year of obtaining IEC PV module qualification certificate including the test lab issuing IEC certificate.(vii) Unique serial number and model number of module(viii) IV curve of module(f) The temperature coefficient of power for the module shall not be more than 0.50% per degree Celcius.(g) Every module must have bypass diode of suitable capacity.(h) PV module must confirm to latest edition of IEC 61215/ IS 14286. In addition the modules must confirm to IEC 61730 salt mist corrosion testing Part I and II for construction and testing & safety qualifications and confirming to IEC 62804 PID.For use in a highly corrosive atmosphere through out their life time, they must qualify to IEC 61701/BIS 61701.(j) It shall also be in confirmity to latest minimum technical specification issued by MNRE & IREDA from time to time. Modules should be of MNRE & IREDA approved companies and as per latest IEC/IS standards. |
| 4 | Sl Item 1 Contd….(l) Plants installed in high dust geographies like Punjab must have the solar modules tested with relevant dust strands(Applicable standard would be 60068-2-68). (m) Both PV cells and SPV modules shall be make in India. (n) Each structure should have angle of inclination as per the site conditions to generate maximum power. However, to accommodate more capacity the angle inclination may be reduced to 10 - 13 Degree until the plant meets the specified performance ratio requirements. (o) Any damage to the existing roof treatment of any type due to the Installation of Solar Power System shall be made good as per existing treatment. Cost of the same shall be included in the unit rate quoted by the contractor. Nothing extra shall be admissible on this Account. (p) The contractor shall submit drawing and desgin of on-grid roof top solar plant duly vetted by NIT/IIT within 34 dyas of handing over site to Accepting Officer. |
| 5 | Sl Item 1 Contd…(B) Junction Boxes : Supply and fix jucntion boxes of suitable Nos (as per design)/ OEM recommendations inputs and suitably rated output having separate DC fuses for both (+) & (-) on input and isolator on output terminal for each string. Each junction box must have a spare input terminal. The junction boxes shall be dust and vermin proof and water proof made of FRP/ Thermo Plast with IP 65 protection in compliance with IEC 62208 and shall be UV resistant, fire retardant. It shall have surge protection and maintenance free earthing as per relecant standard. The junction box shall have suitable arrangement of the following :-(a) The strings are required to be connected to the copper bus bar through individual fuses.(b) Provide arrangement for disconnection (DC disconnection switch) for each SJB/ SCB.(c) Provide a test point for each sub group for quick fault location and to provide group array isolation.(d) Each array box shall be of relevant IEC standard.(e) Each array junction box shall have suitable bypass & reverse blocking diodes for maximum DC blocking voltage of 1000V with suitable arrangement of its connection. Reverse blocking and bypass diodes shall work for extreme temperatures and shall have efficiency of 99.98% confirmed by appropriate IEC standard.Make : As per OEM |
| 6 | Sl Item 1 Contd…(C) DC and AC Cables : Suitable size of XLPE insulated tinned single core DC type 1 Copper cable as per site requirement of Solar grade, 1100 Volts and UV resistant for outdoor installations confirming to IEC : 60227/15694 & 60502/ IS : 1554 (Pt I&II) and shall be as under :-(a) All cables and connectors for use of installation shall be of Solar grade which can withstand harsh enviromnetal 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.(b) All the cables / wires shall be provided with UV resistant printed ferrules for DC side. (c) The size of the cable shall be such that avearage voltage drop at full power from PV module to inverter shall be less than 1.5%.(d) Cable batch No, drum No, IS code and size and make shall be metioned on every one meter or as per OEM practice. (e) Cable of suitable size and type from output of solar inverter to LT panel any deemed to be included in unit rate quoted by the contractor . (f) The wiring of the module interconnection shall be in UPVC/HDPE pipe of suitable size. (g)The cost of interconnecting DC Copper cable, MS cable trays, and earth work for trenches/ MS cable trays suitable to accommodate Solar grade cables from SPV module upto inverters are included in the item. |
| 7 | Sl Item 1 Contd….(D) Module Mounting Structure (MMS) : Design, procure, fixing, support structure made of hot dipped galvanised with min 85 micron thickness including necessary PCC foundation and associated work (cutting, grouting, PCC filling, dispoing waste material, etc., complete) and fixing mounting arrangement suitable for SPV modules so as it can withstand wind speed of 200 km per hour. The mounting structure is to be installed at RCC Roofs and the array structure has to be so designed that maximum load is directly on roof beams and columns. It shall also occupy minimum space without sacrificing the output of SPV panels & adequate space between the arrays shall be available for easy cleaning and maintenance. Nuts, bolts, mounting structure including module mounting structure shall have to be adequately protected from the atmosphere and weather prevailing in the area. All the fastners shall be of Stainless Steel of grade SS 316. Module mounting structure may require to customize with respect to the site availability and incase if any water tank is present on the roof,mounting structure height should be more than 1.5 feet above the water tank height so that space of water tank should be fully utilized for insatallation of PV module.Notes : (a) Two numbers of anti theft fastners of Stainless Steel on two diagonally opposite corners of each module shall be provided. (b) The module mounting structure shall be installed to provide maximum generation.The locking arrangement for adjusting the angle of module shall be accessible from the ground. (c) The contractor shall submit structural design on Stad- Pro based on wind load 200 Kmph, live load and dead load of structure with solar panel & seismic zone of Ferozpur, Punjab. Any deflection to the mounting structure shall be as per IS 800:2007. Note :- Structural design of the mounting structure should be carried out by a consultant, approved by the GE. The height of Roof top MMS shall be as per latest MNRE & IREDA guidelines. (d) Water Leak Protection has to be ensured with Pure Epoxy Resin based chemical anchoring system. Note :- Any damage done to water proofing/Roof structure during installation shall be made good by the contractor without any extra cost. |
| 8 | Sl Item 1 Contd….(E) Lightning Protection for PV Array : Design, procure and fix lighting arrestor system cofirming to IS/ IEC-62305 (Part 1 - 4) per roofs as planned and given above building number . The air terminal shall be fixed at the top of GI elevation pole with base so as to be at least two meter above the structure to be protected. Its height above roof level shall be depend upon the level of protection and protection radii required. Notes : (a) The cost of all equipments, Al strip upto earth test point,LA, etc., shall be deemed to be included in this item. (b) The cost of sufficient earthing as per design for lightning protection is also included in this item as directed by engr-in-charge and no extra payement will be made to the contractor on this account.(F) Power Conditioning Unit (Inverter) : Procure, fixing, testing and commissioning of sutiable capacity planned per building as given AC (nominal power), Solar power inverter suitable to convert DC power of Solar PV module/ array to AC for further feeding to grid confirming to IEC : 61683 for efficiency, IEC : 62109-1 or equivalent for safety and IEC : 62093 for reliability. The input DC & output AC technical specification of Inverter are as under :-Input (DC)(a) Max Absolute DC input Voltage : as required per building b) Start-up DC input voltage : 360 - 500 V (Default 420V)c) Operating input DC voltage range : 300 - 950 V(d) No of independent MPPT : One(e) MPPT input DC voltage range at Pacr : 480 - 800 V DC(f) Max input DC Current : 110 A(g) Maximum input short circuit current : 160 A(h) No of Protected DC inputs : 8-20 |
| 9 | Sl Item 1 Contd….Output AC(a) AC grid connection type : 3Phase (4W + PE)(b) Nominal Power at unity PF as per bulding required (c) Max AC output power : as per building required (d) Max AC output Apperant power : As per building required (e) Max AC output Current : As per building installation required(f) Max AC fault current : As per building installation required (g) Nominal Output Voltage : 415 V(h) Output voltage range : 415 V ± 20%(j) Output Frequency : 50 Hz ± 3Hz(k) Power factor : > 0.995(l) Harmonic Distortion Current : < 3%(m) Efficiency : > 98%(n) Standby operation consumption : < 1.5 W |
| 10 | (p) Operating temperature upto 85 degree centigrade(q) The inverter shall have minimum IP-67 protection, ground fault monitoring, grid monitoring, protection for anti-islanding, DC reverse polarity, AC and DC short circuit current and over current,AC and DC over voltage and over temperature. (r) The inverter shall adjust voltage and frequency levels to suit the grid.(s) The inverter shall be self commulated with Pulse Width Modulation (PWM) technology and shall be capable of synchronise maximum with in one min.(t) Maximum Power Point Tracker (MPPT) confirming to IEC 62093 shall be integrated in the inverter to maximise the energy drawn from the PV array(u) Monolithic design of inverter is not permitted.(v) The inverter shall have suitable nos of protected inputs (asper design) and outgoing shall be protected by ACB/MCCB. |
| 11 | Sl Item 1 Contd….(x) The inverter should have MODBUS, PROFIBUS, ETHERNET common ports.(y) 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 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) & over current. Inverter shall have arrangement for adjustment for adjusting DC input current and shall trip against sustainable fault down stream and shall not restart till fault is rectified.(z) The inverter should have provisions of Galvanic isolation, anti-islanding protection (IEEE 1547/UL 1741) equivant IS and lightening.(aa) PCU must have the feature to work in tandem with other similar PCUs and be able to be successively switched ON and OFF automatically based on solar radiation variations during the day. |
| 12 | Sl Item 1 Contd….(x) The inverter should have MODBUS, PROFIBUS, ETHERNET common ports.(y) 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 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) & over current. Inverter shall have arrangement for adjustment for adjusting DC input current and shall trip against sustainable fault down stream and shall not restart till fault is rectified.(z) The inverter should have provisions of Galvanic isolation, anti-islanding protection (IEEE 1547/UL 1741) equivant IS and lightening.(aa) PCU must have the feature to work in tandem with other similar PCUs and be able to be successively switched ON and OFF automatically based on solar radiation variations during the day. |
