PROVN OF 20 KW ROOF TOP SOLAR PLANT AT SQAE(S) OFFICE COMPLEX SECUNDERABAD UNDER GE (UTILITY) SECUNDERABAD

Amount

Design, procure, erect install, test and commission including connecting to local utility grid; Grid connected solar photovoitaic plant of 20 KW capacity (roof top) including solar photovoitaic Module, DC cabling, AC cabling, Module Mounting Structures, Combining Boxes, Lightning Protection of SPV modules, AC DB, Net metering and other accessories, string inverter, consisting of following main componenets: - Poly Crystaline Silicon Solar Photovolaic minimum of 315Wp, not less than 20KW 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 72 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/String inverter/ Lightning Protection 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. (j) Both cell and SPV modules shall be made in India and must conform to DSR norms of MNRE (k) The minimum net annual generation shall be 1450 units per kilowatt. (l) RFID reader to be provided by the contractor Waaree, TATA, ADANI, RENEWSYS

DC 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) All cables and connectors for use of installation shall be of solar grade which can with stand 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. Smart LED TV (Samsung/Sony) 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% Cable batch no, drum no, IS code and size and make shall be mentioned 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, 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. Make: Lapp, Siechem, Leoni

AC Cables: Suitable size of XLPE insulated armoured aluminium cable to be used .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 by Engineer in charge. 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 AC cable and earth work for trenches suitable to accommodate is included in the item. Make: KEI, Havells, Polycab, Gloster

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, Earth strip up to connecting point and earthing etc are included in this item. The cost of sufficient earthing for lightning protection , Module mounting structure is included i in this item and no extra payment will be made to the contractor on this account.

String Inverter: Procure, fixing, testing and commissioning of 20KW -1 No 50+3 Hz (min) 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 V oltage Range: 575-850 V Max DC Voltage:1000 V Max DC Current : 82.0 A Output AC Nominal Power : 20 kW Max output power : 20 kW Nominal AC current : as per standards Nominal oUTPUT vOLTAGE: 400V Output Frequency : 50/60 Hz Harmonic Distortion current : < 3% Efficiency : 98.3% Standby operation consumption (feed in) : < 20 W

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 voltage and frequency levels to suit the grid . The inverter shall be selfcommulated 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 be 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 comn 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) & over current. Inverter should interfaces with Ethernet, RS485, irradation and temperature sensor, Auxilary equipment and power supply, external stop signal. Should have residual monitoring system. The inverter should have provisions of Galvanic isolation, antiislanding. Inverter must have the feature to work in tandem with other similar inverter and be able to be successively switched ON and OFF automatically based on solar radiation variations during the day. Make: ABB , SMA, Refusol, Fronius, Power One,Kaco,Delta

Lightning Protection : Lightning Protection for PV array : Design, procure and fix lighting arrestor of required no of suitable Early Streamer Emission (ESE) lightning arresters installed in the array field. Lightning arresters/ surge arresters shall confirm to IEC 60099-4 or IS 3070 except to the extend modified in the specifications. Arresters shall be of hermaticallty sealed units, self supporting construction, suitable for mounting on lattice type support structure. The air terminal is ESE type which shall be fixed at the top of GI elevation pole with base so as be at least two meter above the structure to be protected. Its height above roof level would be dependent on the level of protection and protection radii required. The air terminal should be working on the principle of Early Streamer Emission using non radioactive technology, needing no external power source. The air terminal should be capable of racking the lightning stroke 60 micro seconds earlier as copared to passive lighting rod. The air terminal is of Stainless Steel and it has qualified diameter to resist high value of lightning currents. Roof connection pipe should be capable of withstanding lightning strike having dimension 50 mm ID and 60 mm OD. The terminal adapter having inner dia 60 mm OD. Cost of all equipments, Earthing including strip up to lightning arrester connecting point etc are included in this item. The cost of sufficient earthing as fper ESS manufacturer Guidelines for lightning protection is included in this item and no extra payement will be made to the contractor on this account. Make : ABB/C&S/ Equivalent as approved by GE

Earthing :Provision of earthing and earth strip / cable etc for earth of solar Pvmodule/ array / String Inverter/Lightning protection 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

Junction Boxes : Supply and fix jucntion boxes of suitable nos (as per design) of 12/16/24 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. SMB (String Monitoring Box) should have RS 485 communication port to read individual string current, Bus voltage, and inside temperature. 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 SMB/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 by pass & reverse blocking diodes for maximum DC blocking voltage of 1000V with suitable arrangement of its connection. Reverse blocking and by pass diodes shall work for temperature extreme and shall have efficiency of 99.98% confirmed by appropriate IEC standard.

Net metering : Provn of net metering to be done by the contractor including suitable outdoor type enclosure. Quoted rates deemed to be included in this item

Note : (a) The contractor must visit the site before quoting the rates for this item to asses the site condition so as to decide up on laocationa and layout of SPV, placement of inverter, length of DC cables, AC cables , lightning arresters, Earthing including the length of earh Strip etc complete. (b) The contractor shall submit complete scheme including electrical diagram of the work, schematic diagram, SPV module layout, placement of LA, Civil work viz fencing, drain, pathway etc complete as per SECI latest guidelines as applicable IEC and IS to the GE for approval with in one week of date of commencement of the work (c) Rate quoted bu the contractor inclusive of the LTUG cable / Copper cable as required for proper connection and functioning of the Solat Plant. (d) Rate quoted by the contractor includive of supply and installation of Net- mettring including its weather proof enclosure for billing purpose incliding necessary liaisoning of TSSPDCL for calibration. e) The rate quoted by the contractor inclusive of the Fees to be paid to TSSPDCSL for necessary permission/ feasibility report / bank guarantee as required for installation of solar plant. (f) The mechanical structure , PV module , String inverter ,all electrical work and over all workman ship of the solar power plant must be warrented for five years . Training : On successful commissioning of the plant, training shall be provided on Plant operation and maintenance to a team (Engineers and technicians/ operators) as nominated by department for three days.

Design Fabricating supply and errecting connecting and testing totally enclosed out door type LT 440 Volt Feeder piller Box, IP 55 , 3 Phase 4 wire system outdoor type, double door front and back opening type, sloped canopy (Hood) on top extended 100mm all arround, separate compartment for each control gear, cable alley, provision of knock out type plates for various sizes of cable up to 25 Sqmm 4 core in and out, incoming and out going feeders duly marked on revited plates etc complete CPRI approved factory made fabricated out of 3.00 mm thick CRCA sheet duly treated through 5 tank pre treatment process and painted with epoxy powder coated mat finish of SIEMENS GREY structural RAL 7032 shade colour, built in industrial type locking arrangement on front and back and pre-wired with PVC insulated multi stranded copper conductor for controls and monitors, PVC sleeved aluminium strip for connecting MCCBs, Panel mounted on Anle iron frame of 50x50x6mm thick duly painted and embeded in PCC 1:2:4, type C-2, 30 Cm below ground level and 45 Cm above ground level and consisting the folowing Supply , complete all as specified and directed by Engr in charge.

(a) Aluminium bas bar 100 amps - 04 Nos, supported with suitable size of heavy duty porcelin stand lock with suitable size of brass nut, bolts and washer with heat shrinkable PVC sleeving. The bar shall be colour coded (red, yellow and blue) for three phases and black for neutral. (b) MCCB 63 amps ,415 volt ,16 KA Breaking capacity 4 pole Electromagnetic release duly connected to Bus Bar As IN COMING - 02 Nos Make Legrand / Schinder/L&T/Hagar (c) ON Load changeover switch cubical type openexecution 100 amps TPN 415 volt Duly connected to Bus bar -01 nos Make HPL sucomec/L&T /HAVELLS EURO LOAD (d) MCCB TPN, 40 Amp, 4 Pole, 415 Volt, 16 KA Breaking Capacity duly connected to Bus-bar as OUTGOING - 02 N0s.MAKE : Legrand /L&T/Hagar (e) MCB SPN, 16 Amp, 2 Pole, 415 Volt, 10 KA Breaking Capacity duly connected to Bus-bar as OUT GOING 2 nos.

Supply and lay in fixed to walls, roof , poles etc by using shaddles and CONNECTING / TERMINATION BY USING LUGS of appropriate size XLPE insulated and PVC sheathed heavy duty LT 1100 Volts grade armoured under ground cable with aluminium conductor of 4 Core 25 Sqmm incl taking out of existing cable all as directed. Make : Havells/Finolex/kei/pOLYCAB Note : Rate quoted by the contractoe inclusive of Shaddles, screw, making hole on wall including making good of disturbed surface etc as required for fixing of cable in wall, roof etc

sandhya enterprises

omsai thermax engineers

POWER CONSTRUCTION COMPANY