PROVISION OF SOLAR PANELS INCLUDING CONNECTED WORKS UNDER NEW AND RENEWABLE GENERATION AT BASE VICTUALING YARD, COLABA, MUMBAI

Grid Tied Solar String Inverter-20 KW (3Ph):- Supply, Installation, Testing & commissioning of Grid connected string solar inverter outdoor type, minimum IP 65 rating of 20 KW AC output at 50 o C ambient temperature. Minimum european efficiency of the inverter shall be 98% load as per IEC 61683 standard for measuring efficiency. Maximum DC input voltage shall be 1000 V and inverter supplied shall have upto 10% additional DC input capacity. (Array to inverter ratio 1:1) , 3 phase AC Nominal output voltage 415V (with ±10% range). frequency 50Hz (±10% range) PF at rated output capacity:1 (with range from 0.8 lag to 0.8 lead), Total ITHD :3% , Operating temperature range : -20 o C to +60 o C. All inverter should consist o associated control, protection and data logging devices and remote monitoring hardware and compatible with software used for string level monioring all as specified and as directed. Other important features / protection required in the inver are as under :- Notes : (i) Automatic morning wake up and nightly shutdown. (ii) Mains (Grid) Over-under voltag and frequency protection (iii) Galvanic isolation and fool proof protection against ISLANDING . (iv) Included authentic tracking of the solar arrays maximum power opeation voltage (MPPT). (v) Array ground fault detection. (vi) LCD and piezoelectric keypad operator interface menu driven. (vii) Automatic fault conditions reset for all parameter like voltage, frequency and / or black out (viii) Metal oxide varistor (MOV) type surge arrester on AC and DC terminals for over voltage protection from lightning-induced surges (ix) Provn for input and output isolation (x) Invertor shall be installed on GI stand made by the angle size 50mm x 50 mm x 6mm. Structure burried in ground and shall be 450mm above ground level. Grid connectivity : Relevant CERC/RERC regulations and grid code as ammended and revised from time to time shall be complied. Invertor shall adjust the voltage and frequency levels to suit the grid complete all as specified and directed.

Authorised testing laboratories /centre: PV modules must qualify (enclose test reports/certificate from IEC/NABL accredited laboratory) as per relevant IEC standard.Qualification certificate from IEC/NABL accredited laboratory as per relevant standard for any of the higher wattage regular module should be acompanied with the STC report/certificate. For details of Test Labs refer Ministry of New And Renewable Energy website. The report submitted should not be older than 1 year.

PV modules used in solar power plants/ systems must be designed for their output peak watt capacity, which should not be less than 90% at the end of 10 years and 80% at the end of 25 years. PV modules shall have product warranty of 10 years after completion of work. Contractor shall obtain the warranty certificate from the manufacturer and will submit the same to the Eng-in-charge by the contractor.

Photo Voltaic (PV) Modules :- The PV modules must conform to the latest edition of any of the following IEC/equivalent capacity of 540/545/535 Wp solar photo voltaic modules,BIS Standards for PV module design qualification and type approval: Mono Crystalline Silicon Terrestrial. Crystalline silicon solar cell modules conforms IEC 61215 / BIS 14286, Thin film modules IEC 61646 / Equivalent BIS, Concentrated PV modules IEC 62108 / Equivalent BIS, PV modules (for contruction & safety) must conforms IEC 61730 (Part I & II )/ Equivalent BIS., PV modules corrosive atmosphere IEC 61701 / BIS 61701, PV module in sandy environment must conform IEC 600068-2-68.

Silicon Mono Crystalline SPV cells shall be used in the Solar Photo voltaic module. SPV modules should be essentially indigenously manufactured(orgin of County Make in INDIA) irrespective of any other provisions in this tender.

Peak power rating of the module shall not be less than 535Wp.

All materials used shall have a proven history of reliability and stable operation in external applications.It shall perform satisfactorily in relative humidity upto100% with ambient temperatures between -4°C and +60°C and shall withstand wind gust upto 180km/h 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.

The interconnected cells shall be laminated in vacuum to withstand adverse environmental conditions

The module frame will be made of corrosion resistant materials having aluminium anodized finish.

The bidder shall carefully design & accommodate requisite numbers of the modules in the available area (refer topographical survey) to achieve the rated power in his bid. Note-: Shadow analysis report of the site has to be submitted along with topographical survey . The same shall be incorporated in designing in designing of solar plant in PV syst/PV sol/ NREL software.This report has to be vetted from MNRE approved organisation/ NIT / Govt Research Institute and submitted to Eng-in-chare by the Contractor.

The modules must be compatible with Inverter MPPT range.

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 IP67 rated.

Balance of system (BOS) items/components: The BOS items/components of the SPV power plants/systems deployed under this project must conform to the latest edition of IEC or equivalent BIS Standards /MNRE specifications / as specified para 1.01 of minimal technical requirements/standards for SPV system/plants to be deployed during this financial year under the programmes of MNRE available on MNRE website as on last date of quoting of tender.

Design, supplying, erecting, installing, testing and commissioning, consultancy, civil work including module mounting structure, and erection of entire system, including topographical survey of Grid connected Rooftop Solar Photo-voltaic ( PV) plant of 20 KWp at Location Base Victualling Yard (Rooftoop system ) under GE (NW) Kunjali Note. (i) The cost of the components shall be measured and paid separately. (ii) General layout diagram shall be got approved from accepting officer by the contractor.

The Structure shall be of Fixed type and the design of mounting strucutre shall be as per IS code.

Module Mounting structure:- (a) Mild steel structure, Hot Dip Galvanised of 80 micron thick, corrosion resistant and electrolytically compatible with material used in modular frame mounting Structure Shall be used confirming to IS 2062 : 1992 Galvanization shall conform to IS-2629, 4759 & 4736 as applicable. (b) The structure shall be mounted either directly on RCC roof or PCC block of suitable strength which shall be be prepared on RCC roof to withstand the load of the mounting structure. The fastners shall be of stainless steel to fix the mounting structure. (c) It should have suitable strength to withstand windspeed of 180 km/hr .The contractor shall submit the design, length, section, detailed layout etc. of the structure and walkway and will be approved and finalised by Garrison Engineer. Module mounting structure shall require to be customize with respect to the site availability.Test certificate of galvanization shall be submitted by contractor. (d) The contractor shall submit structural design on Stad- Pro based on Wind load The design have to be vetted from NIT/MNRE approved organisation..The mounting steel structure shall be as per IS 2061-1992

All fasteners shall be of Stainless steel-SS 304 Nut & bolts, supporting structures including module Mounting Structures shall have to be adequately protected against all climatic condition.

9(a) M&L for DC cable insulated and PVC sheathed, unarmoured cable, UV-stabilized , FRLS single core flexible copper of size 4.0 sqmm

Supply & fixing of Earthing wire insulated and PVC sheathed, unarmoured cable, UV-stabilized , FRLS single core flexible copper of size single core copper 25 sqmm of reputed make drawn through PVC conduit complete all as specified and directed.

S & F U-PVC, 20 mm dia ,type A as per IS 13592: 2013 single socketed water pipes of suitable length to cover the whole plant area with provision of nozzles outlet every 10m in order to clean the PV modules complete all as specified and directed by Engineer- in- charge. The cleaning system shall be connected to the water source available at site.The cost of supplying, installation and testing of washing and cleaning system of PV modules is deemed to be included in quoted rate.All as specified and directed.

Note:- (a) Number of inverters / PV modules and other components should as per site requirement or OEM Design. Design of structural drawings of module mounting structure alongwith design calculations shall be submited by the contractor duly vetted from MNRE approved organisation/ NIT/ Govt Research I