WBPWD/SSEWEC /HED /NIQ-15 /2025-26-2nd call

Amount

Supply of Solar Photovoltaic Panels Halfcut 24 volts Mono PERC 550Wp or more (Each) (Waaree/APS/Sova/Vikram/TATA Solar/Adani/Jakson/Oswal) All materials used in the Solar PV module shall have a proven history of reliability and stable operation in external applications. It shall perform satisfactorily in relative humidity up to 100% with temperatures between +10° C and +50° C and should have lowest temperature coefficient and shall withstand wind pressure up to 200 km/hr on the surface of the panel. Each and every SPV module shall be checked for conformity with relevant standard and no negative tolerance shall be accepted Solar PV Peak power rating of the module shall be more than or equal to 550 Wp or more. The module conversion efficiency shall be minimum 21 % and above with mono-crystalline silicon half Cut technology under standard test conditions. The cell should have minimum fill factor of 0.75. It shall be made of high transitivity glass and front surface shall give high encapsulation gain. Each PV module used in solar power project must be of ALMM list published by MNRE, Govt. of India and use an RF identification tag. The following information must be mentioned in the RFID used on each module (a) Name of the manufacturer of Solar cells. b) Name of the manufacturer of PV Module. c) Month and year of the manufacture (separately for solar cells and modules).d)Country of origin (separately for solar cells and module).e)I-V curve for the module. e)Wattage, Im, Vm and FF for the module. f) Unique Serial No. and Model No of the module. g) Date and year of obtaining IEC PV module qualification certificate. h) Name of the test lab issuing IEC certificate. i)Other relevant information on traceability of solar cells and module as per ISO 9000.

The PV modules used must qualify to the latest edition of IEC 61215 & IEC 61730 (Edition I and II) for safety qualification testing, Salt Mist Corrosion Resistant (IEC 61701, IEC 62716), Sand Storm Test (IEC 60068-2), Fire Resistance (EN 13501-1 class E, IEC 61730 class C) & Ammonia Corrosion Resistant: IEC 62716. The module shall be provided with a junction box with either provision of external screw terminal connection or sealed type and with arrangement for provision of by-pass diode. The box shall have hinged, weather proof lid with captive screws and cable gland entry points or may be of sealed type and IP-65 rated with test certificate.

Supply of Module Mounting Structure: The PV modules shall be mounted on fixed metallic structures having adequate strength and appropriate design, which can withstand the load of the modules and high wind velocities. The array structure will be made of hot dip galvanized MS Angles of size not less than 50mm x 50 mm x 6 mm size / Aluminum (L Angle – 50 mm x 50 mm x 5 mm, U Channel – 33 mm x 30 mm x 33 mm x 3 mm). The Support structure shall be hot dip galvanized steel or aluminum. Detailed specifications for the mounting structure are given below: Wind velocity withstanding capacity: 120 km / hour Structure material: Hot dip galvanized steel with a minimum galvanization thickness of 85 microns or aluminum alloy. Bolts, nuts, fasteners, panel mounting clamps: Stainless steel SS 304. Access for panel cleaning and maintenance: All solar panels must be accessible from the top for cleaning and from the bottom for access to the module-junction box. Panel tilt angle: North – south orientation with a fixed tilt angle of 18 – 22 degrees (depending on location), south facing. The mounting structure steel shall be as per latest IS 2062: 1992 and galvanization of the mounting structure shall be in compliance of latest IS 4Structural material shall be corrosion resistant and electrolytically compatible with the materials used in the module frame, its fasteners, nuts and bolts. Aluminum structures also can be used which can withstand the wind speed of respective wind zone. Necessary protection towards rusting need to be provided either by coating or anodization.

The Module Mounting should be erected on the roof in non-penetrating manner with help of appropriate chemical binder to fix the Base Plate on the roof slab after which Construction of 400mm X 400mm X 400mm Steel Fiber reinforced concrete block to casted at every legs of the structure to provide adequate weight to prevent blowing off at wind speed of 120 kmp/hour

Supply of 1 Nos. PV Array Junction Box/DC Distribution Box: a) The DC distribution box shall be mounted close to the solar grid inverter. The Array Junction Box/DC Distribution Box shall be of the thermo-plastic IP65 DIN-rail mounting type and shall comprise the following components and cable terminations: ▪ Incoming positive and negative DC cables from the DC Combiner Box; ▪ DC fuse shall be installed inside the DC Distribution Box for each string to protect the DC cable that runs from the DC Distribution Box to the Solar PV Array ▪ DC surge protection device (SPD (Make: Havells/CITEL/ABB/L & T/Phonex/Equivalant)), as per IEC 60364-5-53; ▪ Outgoing positive and negative DC cables to the solar grid inverter. b) The Junction Boxes shall have suitable arrangement for disconnection for each of the strings. Voltage: Max. 1000V DC

Supply of Grid Interfacing panel (GIP)/ACDB 1 In 1 Out: Designed for 20KWp solar power plant with all protections as per MNRE guidelines. The GIP shall have shall be of the thermo-plastic IP65 DIN-rail mounting type and shall comprise the following components and cable terminations: to IP 65 protection. The bus bars are made of copper of suitable size. Suitable capacity fuse & MCBs/MCCB shall be provided for controlling the AC power output to the PCU along with necessary surge arrestors. AC Distribution Panel Board (DPB) shall control the AC power from PCU/ inverter, and should have necessary surge arrestors. Interconnection from ACDB to mains at LT Bus bar while in grid tied mode. All switches and the circuit breakers, connectors should conform to IEC 60947, part I, II and III/ IS60947 part I, II and III. All outdoor panels will have protection of IP65 or better. ▪ ▪ Incoming 3.5 (three-phase) cable from the solar grid inverter ▪ AC circuit breaker, 3-pole / 4-pole ▪ AC surge protection device (SPD), class 2 as per IEC 60364-5-53 ▪ Outgoing cable to the building electrical distribution board.

Supply of Grid Connected Solar Inverter/PCU Rating: 20KW, 3Ph Inverter, Make: Ksolare/ABB/Sungro/Solis/Waree/Luminous/Havells/Loom power/Thea . The detailed specifications of the solar grid inverter are given below. Total output power (AC):20kW. Input DC voltage range: 250 - 850 VDC. Maximum power point (MPPT): tracking Shall be incorporated as mentioned above. Number of independent MPPT inputs: 1 or more Operation AC voltage: Single phase 230V or Three phase 415V (+ 12.5%, -20%) Output Voltage Range - 320V - 480V AC. Operating Frequency: range 47.5 – 52.5 Hz Nominal frequency: 50 Hz Power factor of the inverter:>0.98 at nominal power Total harmonic distortion:Less than 3% Built-in Protection: AC high / low voltage; AC high /low frequency Anti-islanding protection: As per VDE 0126-1-1, IEC 60255.5 / IEC 60255.27 Operating ambient temperature range: -10 oC - +60 oC Humidity: 0 – 95% Rh Inverter efficiency:>=95% Inverter weighted efficiency:>=94% Protection degree:IP 65 for outdoor mounting, IP 54 for indoor mounting Communication interface: RS 485 / RS 232 / RJ45 Safety compliance ;IEC 62109-1, IEC 62109-2

Cooling:Convection Display type : LCD for data display. LCD / LED for status display Display parameters to include : Output power (W), cumulative energy (Wh), DC voltage (V), DC current (A), AC voltage (V), AC frequency (Hz), AC current (A), cumulative hours of operation (h). Compliance with standards and codes : IEC61683 ,IEC60068- 2(1,2,14,30) All above IEC’s should be from NABL/ IEC Accredited Testing Laboratories or MNRE Approved Test Centers/ International laboratories with all test certificate.

SITC of Earthings System : a) The Earthing for array and LT power shall be made as per the provisions of IS:3043-2018 “Code of practice for earthing (Second Revision),” that governs the earthing practices of a PV system and IS 732:2019 “Code of practice for electrical wiring installations (Fourth Revision). In any case, the cross-section area or the earthing conductor for PV equipment should not be less than 6.0 mm2 if copper, 10 mm2 if aluminum or 70 mm2 if hot-dipped galvanized iron. For the earthing of lightning arrestor, cross-section of the earthing conductor should not be less than 16 mm2 of copper or 70 mm2 if hot-dipped galvanized iron. The complete Earthing system shall be mechanically & electrically connected to provide independent return to earth. b) Unprotected aluminum or copper-clad aluminum conductors shall not be used for final underground connections to earth electrodes. c) A Dedicated earth electrode must be used for the earthing of DC side and AC side separately. d) The PV module structure components shall be electrically interconnected and shall be grounded. PV system support structure with a total earth resistance not exceeding 5 Ohm. e) The earth electrodes shall have a precast concrete enclosure with a removable lid for inspection and maintenance. The entire earthing system shall comprise non-corrosive components. f) Earth pit shall be constructed as per IS: 3043-2018. Electrodes shall be embedded below permanent moisture level. Earth pits shall be treated with salt and charcoal if average resistance of soil is more than 20-ohm meter.

Supply of Remote Monitoring System (Wifi & GPRS Type): The RMS system is integrated or External unit. The following parameters are accessible via the operating interface display in real time separately for solar power plant: AC Voltage., AC Output current, Output Power, DC Input Voltage, DC Input Current, Power produce, Protective function limits (Viz-AC Over voltage, AC Under voltage, Over frequency, Under frequency ground fault.. The data shall be recorded in a common work sheet chronologically date wise. The data file shall be MS Excel compatible. The data shall be represented in both tabular and graphical form. Simultaneous monitoring of DC and AC electrical voltage, current, power, energy and other data of the plant for correlation with solar.

Supply of DC Cables ( 4 Sqmm Single Core Copper Tinned Solar DC Cable): All DC cables shall be unarmored sunlight resistive halogen free in accordance with IEC 60754-1, Ozone resistance in accordance with EN 50396. Conductor shall be Electrolytic tinned copper Class 5, according to EN60228 or IEC 60228. Core insulation & outer sheath of the cable shall be as per XLPO (Electron beam cross linked polymer), fine wired in accordance to VDE 295 class5/IEC 60228 class 5, rated voltage shall be 1100/1500V & maximum permissible operating voltage shall be 1800V DC. Normal Operating temperature range shall be -40 deg C to +90 deg C with maximum permissible operating temperature 120 deg C, maximum short circuit temperature shall be 280 deg C. DC test voltage 15kV, type of insulation shall be according to IEC 605021, EN 50363-1. DC Cable shall be weather/UV resistive according to the HD 650/A1, Acid /brine resistance as per EN 60811-2-1, Flame resistance according to IEC 60323-1-2. Cable shall be rodent resistive. The DC cables shall be TUV/UL/equivalent certified. All cable/wires shall be marked with good quality letter and number ferrules of proper sizes so that the cables can be identified easily. The IS 5578:1984 (First revision-2011)/ IEC 60391- 1972 shall be adhered to for guidelines for marking. [Make: DC PolyCab/Sterlite/HPL/Havells/KEI].

Supply of AC Cables (16 Sqmm 4 Core Copper Flexible cable) of Length upto 50 Mtrs. Along with UPVC cable Protection pipe: All 1100 V AC cables shall be Electrolytic tinned copper Class 5,according to IEC 60228. Insulation shall be as per IEC 60502-1 and IS 1554. Cables shall also confirm to IEC 60189 for test and measuring methods. All wires used for connecting the modules and array shall conform to the NEC standards. Modules shall be connected with USE- 2/RHW-2 cables or plug connectors within the array. Array to string combiner box conductors and between string combiner boxes conductors shall be THHN/THWN-2 sunlight resistant with 90°C wet rated insulation cable. Wiring size of PV array shall be designed such that maximum voltage drop at full power from the PV modules to inverter shall be less than 3% (including diode voltage drop). All cable/wires shall be marked with good quality letter and number

Ferrules of proper sizes so that the cables can be identified easily. The IS 5578:1984 (First revision-2011)/ IEC 60391- 1972 shall be adhered to for guidelines for marking. [Make of AC cable: PolyCab/Gloster/Havells/ HPL / KEI].

Supply of Franklin type Lightning Arrester, Make: SGI/OBO/Equivalent The Complete Solar PV Power plant should be provided with Franklin type Lightning arrestor and over voltage protection. The “Lightning Protection System” must be completed prior to start-up of commissioning activities of the project. The main aim of over voltage protection is to reduce the over voltage to a tolerable level before it reaches the PV or other sub-system components. The source of over voltage can be lightning or other atmospheric disturbance. The Lightning Conductors shall be made as per Indian Standards in order to protect the entire Array Yard from Lightning stroke. Necessary concrete foundation for holding the lightning conductor in position to be made after giving due consideration to maximum wind speed 120 Km/Hr. and maintenance requirement at site in future. The lightning conductor shall be earthed through flats and connected to the Earth mats as per applicable Indian Standards with earth pits. Each Lightning Conductor shall be fitted with individual earth pit as per required Standards including accessories, and providing masonry enclosure with cast iron cover plate having locking arrangement, watering pipe using charcoal or coke and salt or Chemical Compound as required as per provisions of IS.

Installation, Testing & Commissioning of all items of this BOQ should comply with the detailed Technical Specification given. SOW :Installation of PV Module holding structure on RCC roof with Base in non-penetrating manner, Supply and installation saddle and screw, Installation of PV Module, Installation of complete earthing including earth pit, earth rod and earth strip, Laying of DC cable from PV Module Array to Array Junction Box and Array Junction Box to Inverter, Laying of AC cable from the inverter to ACDB & ACDB to existing LT Panel, Supply and installation of all wiring material including cable tie, cable lug, UPVC pipe and their accessories as required. Supply and installation of Lighting Arrester, installation of AJB, ACDB and Inverter, Loading and Unloading of Material

Any other items left out from BOQ but essentially required for successful completion of the work may be included in the scope of work. Bidders are advised to physically visit the site before quoting. All Electrical & Technical arrangement at site for installation of Net Metering system shall be done by the bidder & Net Metering arrangement with the local DISCOM shall be taken care of by the purchaser / end user.

Sohum Industrial Sales Corporation (BID ID -6912953)

M/S INSILICA (BID ID -6907816)

ROYAL ENGINEERS CO-OPERATIVE SOCIETY LTD (BID ID -6896751)