BROAD PERFORMANCE PARAMETERS

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1 ANNEXURE -A I. SCOPE OF WORK AND TECHNICAL SPECIFICATIONS SCOPE OF WORK The scope of work includes design, supply, installation, Civil work, testing, commissioning of Solar LED Street Lighting System including 05 years comprehensive warranty maintenance in two peripheral villages Hirtand and Girdhartand of Bokaro Steel Plant as per the following specifications. GENERAL TECHNICAL SPECIFICATION: A Solar Light consist of white LED luminary of maximum 12 Watt ( LED + Driver) as per configuration along with solar PV modules and battery of given capacity, necessary control electronics-inter connecting wires / cables, module mounting structures etc. to operate the load for dusk to dawn. The broad performance specifications of a White Light Emitting Diode (W-LED) light source based solar street lighting system are given below BROAD PERFORMANCE PARAMETERS PV Module Battery Light Source Light Out put Mounting of light Average duty Only indigenous modules shall be used in the project. SPV module 75 Wp at _ 0.2 Volt under STC. Module Voc minimum of 21V. Low Maintenance flooded electrolyte Tubular positive plate Lead Acid batteries of capacity 12 V, 75 C/10, Min DOD 75% White Light Emitting Diode (W-LED) 12 Watt( LED +Driver) Using LEDs which emits ultraviolet light will not be permitted White colour (colour temperature K). Lumen efficacy of LED- min 120 ma The illumination should be uniform without dark bands or abrupt variations, and soothing to the eye. Higher light output will be preferred. 4 meter above ground, pole Mounted Dusk to dawn

2 cycle MINIMUM TECHNICAL REQUIREMENTS / STANDARDS 1. DUTY CYCLE i. The LED solar street lighting system should be designed to operate for dusk to dawn 2. SPV MODULES: i. Only indigenous modules of reputed brand such as BHEL, BEL, CEL, REIL, Tata BP Solar, Moserbaer, or equivalent ( IEC Tested) shall only be used in the project. Crystalline high power/efficiency cells shall be used in the Solar Photovoltaic module. The power output of the module shall not be less than 75 Wp at Volt under standard test conditions (STC). ii. iii. iv. The open circuit voltage of the PV modules under STC should be at least 21.0 Volts. The terminal box on the module shall be designed for long life out door operation in harsh environment should have a provision for opening for replacing the cable, if required. The offered module shall be in accordance with the requirements of MNRE. v. Conformity with IEC edition II / BIS for Crystalline. The bidder shall submit appropriate certificates. vi. Module efficiency should not be less than 14% vii. IDENTIFICATION AND TRACEABILITY Each PV module must use a RF identification tag (RFID), which must contain the following information : (i) (ii) (iii) (iv) (v) (vi) (i) Name of the manufacturer of PV Module Name of the Manufacturer of Solar Cells Month and year of the manufacture (separately for solar cells and module) Country of origin (separately for solar cells and module) I-V curve for the module Peak Wattage, Im, Vm and FF for the module Unique Serial No and Model No of the module

3 (viii) Name of the test lab issuing IEC certificate (ii) The RFID should be inside the module laminate. 3. BATTERY I. Battery shall be Flooded Electrolyte Tubular Lead Acid, Low Maintenance type with low antimony lead alloy plates and ceramic vent plugs. The batteries should conform to IS 1651 / IS 13369/ IEC61427 standards. A copy of the relevant test certificate for the battery should be furnished. The battery of reputed Indian make Exide, Amco, HBL, Luminious, Amar raja, Tata power, Sukam or equivalent II. The battery will have a minimum rating of 12 V, 75Ah at C/10 discharge rate. III. DOD shall be 75 % i.e. at least 75% of the rated capacity of the battery should be between fully charged and load cut off conditions. IV. Battery should conform to the latest BIS/ International standards. V. Battery need to be housed in the luminaire fixture only along with proper ventilation. No separate battery box is allowed. VI. Protection: Temperature compensated charging for battery viii. Batteries shall be provided with micro porous vent plugs & acid level indicator. 4. Light Source: i. The light source will be of white LED type The color temperature of white LEDs used in the system should be in the range of 5500 degree K 6500 degree K. Use of LEDs which emits ultraviolet light will not be permitted. ii. iii. iv. The illumination should be uniform without dark bands or abrupt variations, and soothing to the eye. The light output from the white LED light source should be almost constant. The lamps should be housed in an assembly suitable for outdoor use and shall comply to IP65. High power LED of minimum 1 watt each capacity capable to withstand maximum 1 amp driving current having lens angle greater than 120 degree shall be used. The LED of CREE/NICHIA/OSRAM/SEOUL SEMICONDUCTOR/PHILIPS LUMILEDS/LEDNIUM Make or equivalent v. The total luminarie efficacy should not be less than 80 lumens per watt.( Including all loses) i.e the lumens output of luminare should not be less than 960 lumens.

4 vi. vii. viii. ix. xii. All LED in circuit must be connected in series only. It must incorporate fail short mechanism in all LEDs The LEDs used in the Luminaire should have life time more than 50,000 hrs. The lumen depreciation of LED shall not be more than 30% even after 50,000 burning hours. Power consumption of the LED Luminaire / Lighting unit shall not be more than 12 W (including LED Driver power loss). The connecting wires used inside the luminaries, shall be low smoke halogen free, fire retardant e-beam cable and fuse protection shall be provided at input side. xiii. Auto resettable reverse polarity protection shall be provided xiv. In order make the system performance better and longer life a suitable micro controller dimmer may be provided to dim the light about 50% between 11 PM to 5 AM in night. 5. ELECTRONICS I. The total electronic efficiency should be at least 85%. II. III. IV. Electronics should operate at 12 V and should have temperature compensation for proper charging of the battery throughout the year. No load current should be less than 20 ma. The PV module itself should be used to sense the ambient light level for switching ON and OFF the lamp. V. The PCB containing the electronics should be capable of solder free installation and replacement. VI. Necessary lengths of wires/cables, switches suitable for DC use and fuses should be provided. 6. ELECTRONIC PROTECTIONS I. Adequate protection is to be incorporated under No Load Conditions e.g- when the lamp is removed and the system is switched ON. II. The system should have protection against battery overcharge and deep discharge conditions. III. Fuse should be provided to protect against short circuit conditions.

5 IV. Protection for reverse flow of current through the PV module(s) should be provided. V. Electronics should have temperature compensation for proper charging of the battery throughout the year. VI. Adequate protection should be provided against battery reverse polarity. VII. Load reconnect should be provided at 80% of the battery capacity status. 7. MECHANICAL HARDWARE (i) (ii) A metallic frame structure to be fixed on the pole to hold the SPV module(s). The frame structure should have provision to adjust its angle of inclination to the horizontal between 0 and 45, so that the module can be oriented at the specified tilt angle. (iii) The pole should be made of Galvanised Iron (GI) pipe. (iv) The lamp housing should be water proof and should be painted with a corrosion resistant paint. (v) The length of pole should be 5 meter. (vi) A vented, acid proof and corrosion resistant metallic box with a locking arrangement for outdoor use should be provided for housing the battery (vii) The metallic arm for holding the light assembly should be set at a suitable angle to maximize uniform illumination of desired level over the specified area (4 meter wide road). The arm length of luminary holder from pole should be 0.5 meter for its easy approachability for repairing and replacement. 8. INDICATORS I. The system should have two indicators, green and red. II. The green indicator should indicate the charging under progress and should glow only when the charging is taking place. It should stop glowing when the battery is fully charged. III. Red indicator should indicate the battery Load Cut 9. ELECTRIC CABLE The electric cable used shall be twin core PVC insulated water and UV resistance copper cable of minimum size 1.5mm.

6 10. INSTALLATION OF SYSTEM: The system should be properly installed at site. The SPV module mounting structure along with pole should be properly grouted depending upon the location and requirement of the site. The grouting should be such that it should withstand the maximum wind speed /storm. The pole should be grouted with CC mixture of 1:2:4 of dia 350 mm having depth of 750 mm and 200 mm above ground level with 225 mm dia. Adequate space should be provided behind the PV module/array for allowing un-obstructed air flow for passive cooling. Cables of appropriate size should be used to keep electrical losses to a bare minimum. Care should be taken to ensure that the battery is placed with appropriate leveling on a structurally sound surface. The control electronics should not be installed directly above the battery. All wiring should be in a proper conduit or capping case. Wire should not be hanging loose. Any minor items which are not specifically included in the scope of supply but required for proper installation and efficient operation of the SPV systems, is to be provided by the manufacturer as per standards. 11. 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 workmanship of the SPV power plants/systems must be warranted against any manufacturing/ design/ installation defects for a minimum period of 5 years. 12. Traceability of the product to be supplied In order to prevent the misuse of the product such as unauthorized sale or diversion to the open market, the following incorporation shall be made in the product. Engraving (or) Screen printing of CSR BSL at a suitable place on the main components viz., SPV Panel, Battery, LED Lighting Units to be used in the installation of the solar street lighting systems. II. QUALITY AND WARRANTY I. All the components and parts used in the solar street lighting systems should conform to the latest BIS or IEC specifications, wherever such specifications are available and applicable. II. III. The street lighting system including the battery will be warranted for a period of 5 years from the date of commissioning. The PV module(s) will be warranted for a minimum period of 25 years from the date of supply. The PV modules must be warranted for their output peak watt

7 capacity, which should not be less than 90% at the end of Ten (10) years and 80% at the end of Twenty five (25) years. IV. The Warranty Card to be supplied with the system must contain the details of the system. III. OPERATION and MAINTENANCE MANUAL An Operation, Instruction and Maintenance Manual, in English and Hindi should be provided with the Solar Street Lighting System. The following minimum details must be provided in the Manual: I. Basic principles of Photovoltaic. II. A small write-up (with a block diagram) on Solar Street Lighting System - its components, PV module, battery, electronics and luminaire and expected performance. III. Type, Model number, Voltage & capacity of the battery, used in the system. IV. The make and wattage of the LED used in the lighting system. V. About Charging and Significance of indicators. VI. Clear instructions about erection of pole and mounting of PV module (s) and lamp housing assembly on the pole. VII. Clear instructions on regular maintenance and trouble shooting of the Solar Street Lighting System. VIII. DO's and DONT's. IX. X X O&M Manual should contain the make, model number, country of origin and technical characteristics of W-LEDs used in the lighting system. Name and address of the contact person for repair and maintenance, in case of non-functionality of the solar street lighting system V. Technical Bid Contractor to comply and submit the minimum technical requirements and supporting documents to Engineer-in-Charge to issue the Completion certificate

8 Sl. No. Parameters Specification Confirming (C) / Not Confirming (NC) Lamp/ Luminaire Details of supporting documents wherever required 1 Light source LED (White, 12 Watt), should not emit ultraviolet light 2 Heat Dissipation provision for LED fixture along with proper heat sink 3 Colour Temperature 5500 K K 4 5 Lumens output of luminaries Exterior of lamp housing Not less than 960 lumens Should be water proof and should be painted with a corrosion resistant paint. 6 Light diffusion Light output having spread over the road by using proper diffusing lenses. 7 Duty cycle 8 Dimming Dusk to dawn ~ 12 hours/ day Inbuilt Initially programmed Dimming 9 Luminaire IP rating IP 65

9 10 Switching ON and OFF the lamp PV module should automatically sense the ambient light level for switching ON and OFF the lamp Battery 11 Battery type Flooded Electrolyte Tubular Lead Acid 12 V, 75Ah at C/10 discharge rate 12 DOD 75% 13 Indications Green Battery Charging Indication (should be glowing While charging), Red-load cut-off condition 14 Autonomy 2 days 15 Conformation to IS 1651 / IS 13369/ IEC61427 standards PV Module/ panel copy of the relevant test certificate 16 Type of PV Module Crystalline High Power / Efficiency cell 17 Conformity with IEC edition II / BIS Copy of the relevant test certificate

10 18 The power output of the module(s) under STC should be a minimum of 75 Wp at a load voltage of 16.4 ± 0.2 V. 19 Module efficiency Not less than 14% The open circuit voltage of the PV modules under STC Mechanical configuration of Street Light system At least 21.0 Volts. Module mounting pole including Single fixture along with the mounting arrangement and the solar panel. 22 Operating Temp. (1 to 50 0 C) Electronics/ Protections 23 Installation method of PCB containing the electronics Capable of solder free installation and replacement. 24 Electronic efficiency 85% 25 No load current Should be less than 20 ma. 26 "No Load" on protection Protection is to be incorporated under No Load e.g. when the lamp is removed and the system is switched

11 ON 27 Protection for battery Battery overcharge, deep discharge, Open Circuit, reverse polarity 28 Protection against short circuit conditions Adequate size of fuse protection to be provided 29 Protection for PV module Protection against reverse flow of current through the PV module to be provided 30 Temperature compensation Electronics should have temperature compensation for proper charging of the battery throughout the year 31 Load reconnect Should be provided at 80% of the battery capacity status Mechanical / Civil 32 Street Light pole & SPV frame Should be corrosion resistant 33 Provision for angular adjustment in SPV frame Inclination to the horizontal between 0 and 45

12 34 35 Material of Construction (MOC) for Street light pole The height of the pole 36 Pole foundation Galvanised Iron (GI) 4 metres above the ground level, after grouting and final installation. laid with minimum 1.0 meter inside the ground Note: Details of supporting document should contain name of document, page number, annexure number & details in enclosing documents should be highlighted with marker/highlighter in order to provide clear idea regarding conformity of technical specification. V. Other Condition: 1. Design, supply, installation, civil work, testing, commissioning of Solar LED Street Lighting System in two peripheral villages Hirtand and Girdhartand of Bokaro Steel Plant. 2. To provide five year warranty and maintenance support for complete installed system. 3. The maintenance work by supplier should also involve, regular top up of water in the Solar Batteries and cleaning of Solar panels for removal of dust, as per system requirement along with five year warranty and AMC VII. Condition for Financial Bid 1. The rates quoted are as per the requirement, specification terms & condition mentioned in the tender document. 2. The rates are inclusive for 05 years warranty and maintenance support for complete installed system. 3. The rates are inclusive of all taxes & duties, storage, transportation up to site, insurance etc., and any other job required to execute the work properly. VIII. PAYMENTS: The payments shall be made as per the following terms and conditions: i) 60% of the ordered value after the supply of the complete system at site and duly certified by the concerned district officer of BSL as per the technical specification and terms and conditions specified in the contract. ii. 25% of the ordered value after installation and commissioning of the system along-with the handing over certificate, indicating bill of material and

13 successful commissioning duly countersigned by the designated officer. iii) The balance 15% payment to be at the end of each year for 5 years, on satisfactory performance.

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