Military Engineer Services Tender

(h) Plant performance. The ratio between the actual and theoretical energy outputs of the SPV plant is termed as Performance Ratio (PR) and is measured in accordance with IEC 61724.Based on prevailing climatic and temperature conditions in India, a performance ratio of 80 % is expected for Mono Half cut. It shall be made of high transmittivity glass & front surface shall give high encapsulation gain, transmittance above 90 % and bending less than 0.3 %. (j) All materials used shall have a proven history of reliability and stable operation in external applications. It shall perform satisfactory in relative humidity up to 100% with temperatures between 40º C and + 85º C (Cell) and shall withstand gust up to 200 km/h on the surface of the panel. Each and every SPV module shall be checked for conformity with relavent standard and no negative tolerance shall be accepted. (k) Electrical Parameters of 525 Wp Solar PV module under STC of irradiance 1000 W/m2,AM 1.5 Spetrum & temperature 250 º C will be as under- Max Peak Power Pmax :525 Wp, Current at Pmax Ipm: :12.69 A, Voltage at Pmax Vpm : 41.40 Volts, Short Circuit Current Isc : 13.4 A, Open circuit voltage Voc: 49.20 Volts. (l) The peak-power point voltage and the peak power point current of any supplied module and/or any module string (Series connected nodules) shall not vary by more than 2 (two) per cent from the respective arithmatic means for all modules and/or for all modules strings,as the case may be. (m) Rated output of mudules shall have positive tolerance of 3-5 % & no negative tolerance is allowed.

(n) Generals requirements of PV module: (i) Module shall be manufactured in India. Module shall be made up of Mono Half cut sillicon cells. (ii) The interconnected cells shall be laminated in vaccum to withstand adverse environmental conditions. (iii) The module frame is made up of corrosion resistant materials, perferably having aluminium anodized finish. (iv) Tilt angle to be calculated as per local climatical condition to be submitted. (v) Surge arresting device to be provided at junction box and module shall be provided with bypass diode. (vi) The bidder shall carefully calculate & accommodate requisite numbers of the modules in the available area(refer topographical survey) to achieve the rated power in his bid. (vii) The SPV Module must be IEC 61215 and IEC 61730 Part 1 and part 2 certified from any of the accredited certifying agencies. (viii) 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 bypass diode. The box shall have hinged, weather proof lid with captive screws and cables glands entry points or may be sealed type and IP 65 rated. (ix) The temperature co-efficient for the module shall not be more than 0.50%/°C. (x) Every module must have by pass diode of suitable capacity. (xi) It shall also in conformity of latest minimum technical specifications issued by MNRE from time to time.

(xii) 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). (xiii) Provision of earthing & earth strip/cables etc. for earth for solar PV module/Array etc. as per latest IS/MNRE norms to be provided and the cost of the same is to be included in this item and no extra amount will be paid to the contractor on this account. (o) Cable : (i) Supply, fix/lay and testing of DC Solar cable of suitable size Tinned multistranded Copper Cable with required accessories like conduits, glands, cable tie, ferrules etc. String to SMB of suitable length as per design requirement. (ii) Supply, fix/lay and testing of DC Solar power cable of suitable size multistranded Aluminum with required accessories like conduits, glands, cable tie, ferrules from SMB to Inverter of suitable length as per design requirement. (iii) Supply and fix/lay Auxillary power cable of suitable size multistranded copper with required accessories like conduits, glands, cable tie, ferruls etc of suitable length as per design requirement. (iv) Supply and fix/lay communication cable of suitable size with required accessories like conduits, glands, cable tie, ferruls etc of suitable length as per design requirement. (v) The wiring of modules interconnection shall be in suitable size GI/HD pipe.

Note: (i) cost of all inter connecting copper cables along with all other accessories, essential included like cable trays. (floor/ wall mounted) suitable to accommodate solar grade cables & cables upto inverter is included in the item and no extra payment will be made to contractor. (ii) Suitable size of XLPE insulted copper cable of solar grade, 1100 Volt & UV resistance and flame retardant for outdoor installations conforming IEC 60227/15694 & 60502/ IS 1554 (Pt I & II). (iii) All cables and connectors for use of installations shall be of solar grade which can withstand harsh environment conditions including high temperature, UV radians, rain. humidity, dirt, burial and attack by microbes for 25 years and voltage as per latest IEC/IS in standards. (iv) Cable Batch No./Drum No., IS code & size make should be printed/embossed at every one metre.

2. Module Mounting Structure : (a) Design Supply, fixing, support Ballast type (Non Penetrative) structure MS hot dipped galvanised (80Micrones) with fixed tilt with min 15 degree angle on bldg roof top including PCC foundation for civil works with PCC as dead load minimum height of the lower side of the PV module should not be less than 0.35 meter and fixing the mounting arrangement suitable for PV solar modules & to withstand minimum horizontal wind speed of 200kms/hr. Module mounting structure may require to customize with respect to the site availability . The array structure shall be so designed that it will occupy minimum space without sacrificing the output from Solar PV panels. (b) Modules shall be mounted on a non-corrosive steel structures. (c) The frames and leg assemblies of the array structures shall be made of MS hot dip galvanized. Minimum thickness of galvanisation should be at least 80 microns. (d) All fasteners shall be of Stainless steel-SS 310, Nut & Bolts supporting structures including modules mounting structures shall have to be adequately protected against all climatic condition and weather prevailing in the area. (e) Design efficiency report generated by Staadpro shall be submitted. Note: Design of the mounting structure to be vetted by NISE or Independant agency approved by MNRE and cost of the same shall be borne by the Contractor.

3. Grid Tied Inventory 60 KW : Supply, fixing, testing and commissioning of not less than capacity of 60KW, string type MPPT In-built to provide maximum power output, 50 Hz ± 3 Hz (minimum) 3 phase 400V,104 A DTH 3% at nominal power inverter suitable to convert DC power of solar PV module/array to AC for further feeding to grid & conforming IEC-61683 for efficiency, IEC-62109(1&2) or equivalant for safety & IEC-62093 for reliability. The input D.C. tech specification of inverter are as under- Input (DC) Max DC power : 60 KWp, MPP range : 180-1000V ,Max current : 9*26 A,No. of MPPT tracker : 9/2, Operating temperature - 10º to +85ºC. Invertor-set as per design . Make:-luminious/Havells/Polycab/ABB/Schneider/powerone or equavalent with 5 years warranty (i) Nominal Voltage - 415 V +/- 10 %,3 phase, 50 Hz . (ii) Grid Freq. Synchronization - 47-52 or 57-62. (iii) Ambient Temp - 20ºC to 50º C. (iv) Humidity - 95% non condensing. (v) Protection of enclosure- IP 65 (Outdoor) (vi) No Load Losses - 1% of rated power (vii) Inverter Efficiency - 97% (without inbuilt galvanic isolation) 93% (with inbuilt galvanic isolation) Note:-(i) The inverter shall include appropriate self protection & self diagnostic feature to protect itself and the PV array from the damage in the event of inverter component failure or from parameters beyond the inverter's safe operating due to internal or external causes.

(ii) Inverter shall have protected arrangement against ground leakage faults, over voltage (SPD) & over current. (iii) Inverter shall have arrangement for adjusting DC input current & shall trip against sustainable fault down stream and shall not restart till fault is rectified. (iv) The inverter should have provisions of Galvanic isolation, Anti-islanding protection (IEEE 1547/UL 1741) equivalent BIS standard and lightening. (v) Item for Mechanism of heat disipation deemed to be included in above item. (No extra payment shall be made.) (vi) The inverter shall adjust voltage and frequency levels to suit the grid. (vii) The inverter shall be self-commulated with Maximum power point tracker (MPPT) technology and shall be capable of synchronize maximum within 1 minute. (viii) Maximum power point tracker (MPPT) conforming IEC-62093 shall be integrated in the inverter to maximize energy drawn from the solar PV array. (ix) MONOLITHIC Design of Inverter is not permissible. (x) The Inverter should have suitable nos. of Protected Inputs (as per design) and Outgoing should be protected by ACB. (xi) The Inverter should be proided with SPG and suitable earthing kit. (xii) The Inverter should have MODBUS, PROFIBUS, ETHERNET Communication port. (xiii) The inverter shall include appropriate self protection & self diagnotic feature to protect itself and the PV array from the damage in the event of inverter component failure or from parameters beyond the inverter's safe operating due to internal or external causes.

(xiv) Inverter shall have protected arrangement against ground leakage faults, over voltage (SPD) & over current. (xv) Inverter shall have arrangement for adjusting DC input current & shall trip against sustainable fault down stream and shall not restart till fault is rectified. (xvi) The inverter should have provisions of Galvanic isolation, Anti-islanding protection (IEEE 1547/UL 1741) equivalent BIS standard and lightening. (xvii) The inverter shall consist of associated control, protection, data loging device and remote monitoring hardware. (xviii) The inverters shall have minimum protection to IP65 and minimum European efficiency 98% load as per IEC 61683 standard. 4. The Contractor will be responsible for obtaining all permissions as per the procedure of RREC and regulatory commission of Punjab for installation of ON GRID power project. The cost of the same is to be included in the quoted rates, no additional payment will be made to the contractor for the same. The contractor must go through latest solar policy of the state and MNRE. Procedures for installation of ON GRID solar power plant. Charges deems as applicable payable to any Department for any ON GRID evacuation will be borne by the contractor.

5. AC BUS and Panel: The ACDB enclosure shall be IP 42 for indoor and IP 54 for outdoor installation and shall be suitable for mounting on the trenches / on wall. The ACDB incomer shall be a four [4] pole MCCB with thermal over current and earth fault releases. The incomer shall be selected one size higher than the required rating as per Type 2 selection chart. The ACDB outgoing feeders shall be provided with four [4] pole MCBs for each feeder. The outgoing MCBs shall be selected one size higher as per Type 2selection chart. The short circuit current ratings for the incomer and the outgoing MCBs shall be 100 kA and 10 kA respectively.The ACDB also coprises merering instrument and LED indicator lamps. Removable gland plates with gaskets shall be provided in the cable alleys for glanding the power and control cables.

6. Cables & Wires as required (From Solar module to invertor etc Conductor material) : 4 Sq mm tinned copper flexible copper conductor, Max PV System voltage(DC) : 1000 V, Ambient temperature range: -40 Deg C to +90 Deg C, Max Conductor temperature at termination of short circuit : 250 Deg C, Type of conductor : As per class 5 according to EN 60228/IEC 60228, Insulation material : Chemically cross linked XLPE, Type of insulation: According IEC 60502-1, EN-50363-1, Nominal thickness of insulation : 0.80mm, Outer sheath Material: Chemically cross linked XLPE, Recommended bending radius : 4 times of overall dia, AC test voltage : 6.5 KV for 5 Minute, all cables shall conform to BIS standards (IS 694)/(IS1554), PVC/XLPE copper conductor power electric cable.It should concist of following-(i) Cable from invertor to ACDB should be of size 35 Sq mm 3.5 core or higher size, Cable from ACDB to user LT Panel is to be used XLPE of size 95 Sq mm 3.5 core or higher size of length 1000 RM. Quoted rates are inclusive of earth work, sand cushioning and laying bricks for cable protection returning filling and removal etc Make: Polycab/Siechem or equivalant Cables Accessories: Such as Glands, lugs, MC4 connectors , wey connectors, clamps, cable Ties, perforated Trays with accessories etc.

7. Lightning Protection for PV Array: Design, supply & fix Lightning Arrestor of required number of suitable Early Streamer Emission (ESE) lightning arrestors installed in the array field. Lightning arrestors/surge arrestors shall conform to IEC 60099-4 or IS:3070 except to the extent modified in the specifications. Arrestors shall be of hermetically sealed units, self-supporting construction, suitable for mounting on lattice type support structures. The air terminal is Early Streamer Emission (E.S.E.) type which shall be fixed at the top of a GI elevation pole with base so as be at least 2 meters above the structure to be protected. Its height above roof level would be dependent on the level of protection and the protection radius required. The air terminal should be working on the principle of early streamer emission using non-radioactive technology, neeeding no external power source. The air terminal should be capable of racking the lightning stroke 60 micro seconds earlier as compare to passive lightning rod. The air terminal is of stainless steel and it has qualified diameter to resist high values of lightning currents.The air terminal is of stainless steel and it has qualified diameter to resist high values of lightning currents.Roof connection pipe should be capable of withstand in lightning strikes having dimension 50mm ID and 60mm OD. The terminal adaptor having inner dia 60mm OD. Note: 1. Cost of all equipments, GI strip upto earth test point etc are included in this item. 2. 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.

8. Earthing Protection - Earthing: 03 Set of maintenance free Chemical earthing kit using 80 mm dia copper bonded pipe having 3 meter long for electrode along with 25X 3 mm GI strip and lightning protection system to connect complete power plant as relevant BIS/IEC standards using maintenance free gel earthing, lightining arrester of 01 set according to radius of protection during detailed engineering. Each array structure of the PV yard should be grounded properly. The array structures shall be connected to earth pits as per IS Standards. Note: (i) Cost of all equipment’s, copper strip upto earth test point etc are included in this item. (ii) 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. 9. (i) Solar Power gross Meter as required qty. (ii) Three phase LT AC controlled switch with complete accessories to cut off solar power supply to grid in case of failure of the grid -01 No.

10. Balance of System (BOS) Items /Components :- The BOS items/components of the SPV power plants system deployed under this projects must confirm to the latest edition of IEC or equivalent BIS Standard/MNRE specifications /as specified at Para 2.1 of minimal technical requirements/ stardareds for SPV system / plants to be deployed during this FY under the programs of Ministry of New and Renewable energy available on MNRE website. 11. Grid Synchronization: The system shall incorporate a uni-directional grid interactive inverter and shall be designed to supply the AC power to the grid at load end. The power conditioning unit shall adjust the voltage & frequency levels to suit the Grid.. All three phases shall be supervised with respect to rise/fall in programmable threshold values of frequency .The inverter output shall always follow the grid in terms of voltage and frequency. This shall be capable of synchronize maximum within 1 Minutes. 12. Warranty : The mechanical structures, electrical works including power conditioners /inverters/charge controllers/maximum power point tracker units/distribution boards/digital meters/switchgear/storage batteries, etc and overall workman ship of the SPV power plants systems must be warranted against any manufacturing/design/installation defects for a minimum periods of 5 years.

13. General Notes : The items of work mentioned in this schedule shall be executed as per following:- (a) The above items shall be quoted and executed on ground based on performance Guarantee basis. The performance Guarantee is related to achieving the 60 KWp generations with specified efficiency and efficacies. The contractor shall also be responsible for desired operational efficacy and desired efficiency of the system during its life cycle of minmium 25 Yrs. (b) The plan layout and schematic diagram shall be got vetted from any one of the following agencies (Approved design vetting agencies) (i) National institute of Solar energy. (ii) sardar Swarn singh National Institute of renewable energy. (iii) Solar energy corporation of (India). (iv) The Indian renewable energy development agency, The vetting agency shall also be approve the make proposed by the contractor in his plan layout and schematic diagram. (c) The successful contractor shall submit the following documents duly vetted by any one approved design vetting agency after placements of work order for approval of MNRE/SECI/NISE. (d) Design calculation: The tenderer should work out design based on the conditions prevalent at FAZILKA (PUNJAB) ,where ground specification as existing. The complete design calculations using PVSYS & PVSOL software or any other software shall be submitted for approval by any of MNRE/SECI / NISE. (e) SLD Plan depicting layout of all equipment and Sub Systems of the PV system. This shall be self contained and self explanatory representation of layout of equipment and sub systems. The dimensioned drawing of the site of work clearly marked with all sub systems components etc shall be submitted.

(f) All the documents/technical details mentioned above duly vetted as specified above shall be approved by Garrison Engineer. The Garrison Engineer may approve the documents as submitted by the Contractor or may suggest modification /alteration in documents /technical specifications duly supported with reasons for the same. The work shall be executed based on the approved doucments. In case of any dispute the matter shall be referred to Garrison Engineer. The decision of Accepting Officer shall be final and binding. (g) The drawings and other techincal details submitted by the successful contractor, alongwith all calculations, drawing, technical write ups etc shall become departmental property. Department may use these subsequently as deemed necessary. The contractor shall have no claim on these documents and their subsequents use by the department. (h) After execution of project the contractor will verify generation of electricity as per vetted design in the PVSYST & PVSOL report submitted. (j) The contractor shall ensure suitable arrangements for solar PV Panels. (k) Supply and Installation of Display board of 6’ X 4’ size showing all technical information of SPV plant shall be done by the contractor. The matter written on these boards shall be finalized with GE.

M&L for routine maintenance of Solar Power Plants i.e cleaning of PV cells outdoor & indoor accessories of entire plant. Minor spares such as lugs, cable pipes, fuses, insulating tap and other required materials will be provided by contractor with suitable qualified labour & tradesman, details of minor items will be as per functional requirement of plant and will be intimated by GE.

M&L for routine maintenance as mentioned in Ser item No 2.00 above for first 365 days (1st year under defect liability period).

All as per Ser item No 2.01 above but from 366 th to 730 th days (2nd year under defect libility period)

All as per Ser item No 2.01 above but from 731 st to 1095 th days (3rd year under defect libility period)