Solar Home System specifications
Contents
1. Yes No Specify Annex 2 Page 3 of 3 Annex 3 Renewable Energy for Rural Economic Development Project Interim Battery Acceptance Short Test Procedure Perform the test sequence as given below in Table 1 while maintaining the battery temperature between 20 25 deg C The tests must be conducted on at least three batteries that are randomly selected at a testing center acceptable to the Administrative Unit Record the data in Table 2 If the results are within 10 percent for the three batteries then the results are acceptable In case the deviations in the results are more than 10 two additional batteries should be tested to achieve better statistical significance Table 1 Interim Battery Acceptance Short Test Procedure Capacity Step Current Current End of step Criteria Remarks test No voltage Setting voltage Limit U 2 4 V cell Constant current charging Initial charge 2 4 V cell lio Duration 8 hours Constant voltage charging 1 C10 Test 1st discharge lio U lt 1 8 V cell Rest Period OA I hour Battery on open circuit st recharge lio U 2 4 V cell Constant current charging 1st recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 2 C10 Test 2nd discharge lio U lt 1 8 V cell Rest Period 0A I hour Battery on open circuit 2nd recharge Tio Constant current charging 2nd recharge 2 4 V cell lio Duration 8 hours Constant voltag2. 5 5 5 Batteries bearing Chinese Golden Sun certification will be accepted without additional requirements 5 5 6 Accepted on an interim basis are flat plate batteries tested and certified in accordance with BS Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 3 of 8 EN 50342 2001 Lead acid Starter Batteries General Requirements Methods of Test and Numbering which supersedes BS EN 60095 1 1993 or equivalent or better standard Manufacturer s self compliance certificates for batteries tested to either BS EN 50342 2001 or BS EN 60095 1 1993 received by the Administrative Unit RERED Project after 30 September 2004 shall not be acceptable 5 5 7 Other than the batteries already accepted for use under the Project as at September 2009 new batteries not meeting IBASTP PV GAP PVRS 5A IEC 61427 or IS 13369 1992 shall not be accepted 5 5 8 For batteries of differing capacities made by the same manufacturer using the same i production processes and construction methods ii materials and iti quality control procedures as a battery already accepted for use under the Project subject to 5 5 7 above a Manufacturers Self Compliance Certificate MSCC will be accepted in lieu of above requirements 5 6 The batteries shall be supplied to the customer in a fully charged condition ready for use If the battery is supplied dry charged all ch
3. at least one functional task or area light 11 3 The system shall be warranted by the supplier dealer for a period of 1 year from the date of purchase against manufacturing defects excluding fuses and other safety devices 11 4 The supplier dealer must provide the customer with all necessary installation maintenance and longevity Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 7 of 8 instructions along with instructions on proper orientation of the PV module preferably with a demonstration at the shop if the sustomer is to set up the system 11 5 The warranty on PV module shall be 5 years a relaxation of condition 1 1 herein 12 Socket Outlet A 12 V DC and or lower voltage socket outlet used for a TV or similar appliance must be rated to carry the maximum expected DC current The outlet must be protected from reversing the polarity of the voltage applied to the appliance 13 Packaging and Delivery 13 1 In the case of fixed base SHS systems the supplier dealer must assemble and wire the components into integrated packaged SHS in accordance with the proposed design and deliver the packaged SHS to the user 13 2 In the case of Plug and Play systems it shall be pre packaged to facilitate ease of transport and simple installation by the customer 13 3Each system must be packaged for shipping to prevent any shipping related
4. cloudy periods are expected However over sizing of the battery should be avoided as it can lead to shortening of battery life due to insufficient charging For shallow cycle batteries such as modified automotive batteries the 20 hour ampere hour Ah capacity C20 at 12Vde measured at 25 C should be such that it will permit a minimum of three days of autonomy where the maximum depth of discharge is limited to 75 percent of rated capacity Example Minimum lead acid battery capacity for typical applications Minimum battery sizes Ah for Module Average daily Ah to Daily Ah x 3 days of autonomy of Rating Wp load at 12 V DC autonomy 0 75 3 days 5 days 10 3 12 12 20 20 6 24 24 40 30 9 36 36 60 40 12 48 48 80 50 15 60 60 100 60 18 72 72 120 These are based on five peak sunlight hours per day 10 module derating and 20 battery round trip Wh losses as per paragraph 1 of Specifications 5 3 The maximum permissible self discharge rate is 10 percent of rated capacity per month at 25 C 5 4 Cycle life of the battery i e before its residual life drops below 80 percent of the rated Ah capacity at 25 C must exceed 200 cycles when discharged down to an average depth of discharge DOD of 75 percent 5 5 Deep cycle batteries are preferred over modified automotive type shallow cycle batteries for use under the Project Batteries must be certified to test standards appropriate for each battery type 5 5 1 Interim Battery Acce
5. damage The supplier dealer will be responsible for settling any shipping related damaged claims and will be responsible for replacing damaged systems in a timely manner 13 4The modules must be packaged separately not attached to the module support structure Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 8 of 8 SOLAR HOME SYSTEM SPECIFICATION SHEET 1 Photovoltaic Module s a b Model Number Type a Si crystalline Si etc Number of cells in series Rated peak power Pmax Open circuit voltage Short circuit Current V max I max NOCT Test Certification Standard Test Laboratory Attach I V curve and copy of test certificate 2 Support Structure a b Type Material 3 Battery Storage b d e f S h i i k Model Number Number of batteries Rated voltage Structure and material of positive plate Capacity per battery at C 20 down to 1 75V cell Self discharge rate Cycle life down to 75 percent of DOD Positive plate thickness Negative plate thickness Electrolyte volume Certified to standard Attach test certificate 4 Charge Regulator and Load Control a b G Model number Rated voltage Control algorithm High voltage disconnect i Voltage regulation set point Vr it Reconnect voltage Vrr Boost charging method Charge i
6. provided to the user should be in the language the user is most familiar with The User s Manual documentation should be simple and easy to understand Sketches and graphics should be provided to make the manual easy to understand and use The documentation shall include the following 3 2 1 Theory of operation of the SHS with a discussion on battery charging by the array functions battery low voltage protection and battery overcharge protection The relationship between energy available on a daily basis and sunlight conditions should be clearly and simply explained 3 2 1 A description of all user interactive hardware including disconnect switches and status indicators 3 2 2 Procedures for proper system operation including a list of load limitations and any problem loads Suggested operation including load conservation during periods of inclement weather and or a low voltage disconnect event The procedures for checking that the photovoltaic array is not shaded and how to prevent shading must be explained In the case of portable and Plug and Play units proper orientation of the PV panel must be explained to maximize energy laboratory having to submit a copy of the ISO IEC 17025 certificate The list of NCBs and their CBTLs and ACTLs can be found at http members iecee org iecee ieceemembers nsf CBTLs OpenView Solar Home System Specifications and Service Standards 7 January 2010 Page 2 of 4 Sri Lanka Renewable Energy for Rural Econom
7. 1 The supplier dealer shall educate the customer on proper usage of the SHS the abilities and limitations of the particular configuration the customer intends to purchase and maintenance requirements prior to the sale of the aforesaid system Solar Home System Specifications and Service Standards 7 January 2010 Page 3 of 4 Sri Lanka Renewable Energy for Rural Economic Development Project 4 2 The supplier dealer shall clearly explain to the customer the warranty terms associated with the SHS and actions which would void the warranty 4 3 The customer shall be provided with contact details of supplier dealer including that of branch offices and head office Contact details of the AU shall also be provided It is preferable if such details can be printed or reliably pasted onto a permanent fixture of the SHS such as the Charge Controller 4 4 Customer complaints shall be attended to within 3 working days from the date of receipt of complaint 4 5 The supplier dealer shall maintain adequate stocks of spares at his outlets for replacement of faulty components 4 6 For systems which are permanently affixed to the household the supplier dealer shall carry out a minimum of four 4 free service visits at following intervals e 1st visit within 14 30 days from the date of installation e 2nd 3rd and 4t visits shall be at the end of the 4 8 and 12 month from the date of installation respectively e Any visit to the household bas
8. IDA and Global Environment Facility GEF assisted Renewable Energy for Rural Economic Development RERED Project must have a type test certificate from a testing and certification organisation acceptable to the Government of Sti Lanka and the World Bank stating that the Solar Home System meets or exceeds the specifications given in Annex 1 Organisations accredited according to ISO IEC 17025 formerly ISO 25 or equivalent standards will be acceptable Test certificates from testing organizations accredited under IECEE NCB program will be accepted without the testing Solar Home System Specifications and Service Standards 7 January 2010 Page 1 of 4 Sri Lanka Renewable Energy for Rural Economic Development Project 2 2 SHS components or systems that bear the Photovoltaic Global Approval Program PV GAP or IECEE Mark or Seal or certified according to PVRS standards will be acceptable for use in the Project without additional certification requirements PV GAP is a Geneva based not for profit international organisation dedicated to the sustained growth of global PV markets to meet energy needs worldwide in an environmentally sound manner For more information visit http www pvgap org IECEE http www iecee org has acquired the rights to PVRS standards and the issuance of PVGAP Mark and Seal 2 3 SHS components and systems which are accredited under the Golden Sun certification will also be acceptable for use in the Pro
9. Sri Lanka Renewable Energy for Rural Economic Development Project SPECIFICATIONS FOR SOLAR HOME SYSTEMS AND SERVICE STANDARDS Revised 7 January 2010 1 Solar Home System Hardware Description 1 1 A solar home system SHS is intended to provide the user with a convenient means of supplying power for small electrical loads such as lights a TV set and radio cassette players A typical SHS will provide power for dc high efficiency luminaires fluorescent or Light Emitting Diods LED and 12 Vdc socket outlets for TV or similar appliance for three to five hours a day Additional 12 Vdc luminairs such as night lamps or DC AC inverters may be supplied as options Each SHS shall consist of one or more photovoltaic PV modules with an output of 10 Wp or more charging a 12 Vdc lead acid battery along with related electronic and electrical components and mounting hardware The SHS must have at least one functional task or area light The batteries charge controller low voltage disconnect and associated components will be located in sturdy enclosure s Examples of SHS PV module sizes and typical service levels provided with five peak sunlight hours per day are shown below SHS Useful energy Typical service levels 10 Wp 3 Ah day 2 2 hours per day for three 5W lights 30 Wp 9 Ah day 3 hours per day for three 8W lights and a 12W TV 60 Wp 18 Ah day 4 hours per day for five 8W lights and a 12W TV Note These are representative levels of service ass
10. at the installation of the photovoltaic array with regard to position direction inclination and shading avoidance will maximise energy generation Ensure that the battery has received an equalisation charge just before installation Use a shunt to measure the current from the array under charging conditions to verify the array charging current This measurement should be done under clear sky conditions Test all the loads for proper operation Make system wide voltage drop measurements in the sub circuits to verify that connections are within the maximum allowable voltage drop Note all measurements in the installation log Explain to the user the system operating principles load management requirements impact of shading of the array and how to check and avoid it user maintenance checks and how to conduct them A recommended annual maintenance schedule with complete maintenance instructions A detailed trouble shooting guide referencing all the system components This shall include repairs and diagnostic procedures that can be done by the supplier or a qualified third party Repairs and procedures not to be attempted by non electricians and or electricians unfamiliar with photovoltaic systems shall also be identified A functional block diagram electrical single line drawing showing the placement of all hardware and ratings of all components and physical layout diagram Emergency shut down procedures 4 Customer Service and Protection 4
11. e charging 3 C10 Test 3rd discharge lio U lt 1 8 V cell Rest Period OA I hour Battery on open circuit 3rd recharge lio U 2 4 V cell Constant current charging 3rd recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 4 C10 Test 4th discharge lio U lt 1 8 V cell 4th recharge Tho U 2 4 V cell Constant current charging 4th recharge 2 4 V cell lio Gradient of current is 0 A s but maximum 36 Constant voltage charging hours 3 Alternative for 4 recharge depending on availability of equipment 4 recharge Tio U 2 4 V cell Constant current charging 4 recharge 24 V cell Tio I lt 0 1 x Ino Constant voltage charging 4 recharge 0 1 x To Capacity charged in 4 recharge gt 112 of capacity discharged during 4 discharge 3 Note that the end of the constant voltage charging is reached only when the battery current has not changed for two hours If this criterion has not been reached after 36 hours of the charging process continue with the next step of the test procedure Solar Home System Specifications and Service Standards 7 January 2010 Sri Lanka Renewable Energy for Rural Economic Development Project Annex 3 Page 1 of 3 Table 1 Interim Battery Acceptance Short Test Procedure Capacity Step Current Current End of step Criteria Remarks test No voltage Setting voltage Limit 5 Cio Test 5th discharge lio U
12. e indicators should be warranted for at least one year Battery end of life will be determined when the battery capacity down to 1 75 V cell at 25 C drops to less than 80 percent of the initial rated capacity b In addition the supplier dealer will provide a 30 day money back guarantee for users who wish to return the SHS for whatever reason and the suppler dealer will refund no less than 75 percent of the selling price of the SHS when the module controller battery and light fixtures are returned to the supplier dealer in good working condition All warranties will start from the day the system is accepted by the user 1 2 Nominal system voltage rated voltage shall be 12 V DC 1 3 The entire SHS must be designed and constructed such that it requires maintenance and inspection by a technician no more frequently than once every six months 1 4 The main components shall be integrated in such a way as to allow replacement in case of failure with a similarly functioning component of a newer design or a different brand This will allow for future component evolution or variability of future component availability 1 5 With the exception of the PV module s the supplier shall deliver the system to the user with as many components pre assembled and pre wired as is feasible prior to shipment 1 6 All components including spares will undergo full bench testing at the supplier factory or the originating soutce factory with proper documentation s
13. early marked indicating Manufacturer Model Number Serial Number Peak Watt Rating Peak Current Peak Voltage Open Circuit Voltage and Short Circuit Current of each module 3 6 The module junction box must be sealable and moisture resistant If the module does not have a junction box which allows for a direct connection then the structure will have a weather resistant junction combiner box attached to the support structure This box will have a terminal strip for connecting the parallel wired modules 3 7 The modules must be framed in such a way as to allow secure connection to the module mounting structure 4 PV Array Mounting Structure Note This section applies to PV modules to be installed on a structure It does not apply to portable units and units to be set up by the customer i e plug and play units 4 1 The array mounting structure will hold the photovoltaic module s The module s must be mounted to a support structure made of aluminium galvanised steel or other corrosion resistant material which assures stable and secure attachment 4 2 The structure must be mounted at a fixed angle and oriented to maximise the useful energy supplied to the user during the design month i e the month with the worst average daily insolation Array orientation must be adjustable in the field 4 3 The structure will incorporate galvanised steel aluminium stainless steel or other corrosion resistant hardware for all external connect
14. ed on customer complains during this period shall be counted under the aforementioned 4 free visits 4 7 At the end of the first year from the date of installation the customer shall be given the option of entering into an Annual Maintenance Contract AMC with the supplier dealer However the supplier dealer shall discuss the terms of such AMC with the customer at the point of installation If the customer does not want to enter into an AMC the supplier dealer shall charge the customer a fee for such visits 4 8 In the case of Plug and Play and other forms of movable SHS systems the customer shall bring the system to the supplier dealer or to an authorised service agent for repairs and maintenance work as necessary Solar Home System Specifications and Service Standards 7 January 2010 Page 4 of 4 Sri Lanka Renewable Energy for Rural Economic Development Project 1 2 3 Annex 1 SOLAR HOME SYSTEM REQUIREMENTS General 1 1 a The supplier dealer will provide a minimum twelve month warranty against manufacturer s defects on all system integrated parts and labour excluding fuses or end use devices such as luminaires On all major individual components manufacturer s warranties will be passed through to the user Specifically the PV modules should be warranted against reduction of output of no more than 10 percent of rated capacity over a ten year period The battery charge controller low voltage disconnect switches and charg
15. emicals and electrolyte must be supplied in accordance with battery manufacturer s specifications The battery and associated containers should be able to handle transport down rough dirt roads without damage Charge Regulator and Load Control 6 1 A solid state photovoltaic charge controller must be provided The charge controller must incorporate one of the following charge control algorithms a Constant Voltage b Pulse Width Modulated c On Off series or shunt linear Voltage regulation high voltage disconnect voltage set points should prevent excessive gassing of the battery The set points must be factory pre set with the set points applicable to the specified battery characteristics If on off control algorithm is used regulation voltage of 14 4 V and a reconnect voltage of 13 4 V is recommended for flooded lead acid batteries It is recommended that circuitry to allow boost or equalisation charging the battery be provided 6 2 The charge controller must have some type of display to indicate when it is in the charging mode 6 3 The charge controller must be capable of handling 125 of the array s rated short circuit current over a one hour period but not less than a 6 A when used with modules rated at 30 Wp or more and b 3 A when used with modules rated at less than 30 Wp 6 4 The charge controller must be equipped with reverse current leakage protection Blocking diodes or logic derived methods are both acceptable If block
16. es rated DC current lasting less than 10 microseconds Such an inrush current shall not cause the load to be disconnected and shall not cause Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 4 of 8 9 degradation of the controller Protective devices should disconnect the load should currents of 10 times rated DC current last longer than 10 microseconds Lightning induced surge protection must be provided 6 9 Some means must be provided to safely disconnect the battery and the module during servicing or repair by a technician 6 10The model number serial number rated voltages and currents set points and indicator settings should be noted on the charge regulator case 6 11 Charge controllers bearing Chinese Golden Sun certification will be accepted by the Project without additional requirements 6 12 For charge controllers of differing current handling capabilities made by the same manufacturer using the same i production processes and construction methods ii materials and iii quality control procedures as a battery already accepted for use under the Project subject to 5 5 7 above a Manufacturers Self Compliance Certificate MSCC will be accepted in lieu of above requirements System Monitoring 7 1 Some form of a battery state of charge indicator must be provided on or near the controller or load centre 7 2 Th
17. harge The luminaire switches and connectors should be robust and capable of 1000 on off switching cycles The luminaire should be robust and all parts connectors and wiring should not come apart The SHS supplier dealer must provide at least a one year warranty against manufacturing defects Minimum operating voltage shall be 85 of the rated voltage and should be capable of withstanding 125 of the rated voltage Luminaire must be insect and corrosion and weather resistant Luminaire must be marked with the manufacturer model number rated operating voltage rated current Luminaires with integrated batteries must be marked with the manufacturer model number Products that are already accredited for use under a World Bank group IDA GEF IBRD IFC funded rural electrification project or under the Lighting Africa Program http www lightingafrica org will be allowed for use under the Project without additional requirements 11 Plug and Play Systems A plug and play PV system is a portable home lighting and appliance radio cassette CD player etc that can be set up by the customer without assistance from a trained technician The Project accepts inclusion of such systems subject to following 11 1 The said system should be certified under Chinese Golden Sun certification or an equivalent or better standard accredited for use under a World Bank Group funded rural electrification project 11 2 The said system must have
18. ic Development Project 3 253 3 2 4 3 2 5 3 2 6 3 2 7 generation This should include a simple diagram of principle components of the system For user maintenance items such as non maintenance free batteries proper maintenance procedures of each item Actions which would void warranty Procedures for emergency shut down and for extended periods of system non use Personal and product safety measures to be practiced around the system Do s and Dont s A trouble shooting guide for users 3 3 Technician s Manual for Installation Operations and Maintenance The SHS supplier must provide a Technician s Manual for Installation Operations and Maintenance for use by the service technicians This manual provides specific details on installation operation and maintenance It must be provided to the technician in a language best understood by the technician and shall include the following 3 3 1 3 3 2 3 3 3 3 3 4 3 35 3 3 6 3 3 7 3 3 8 3 3 9 A detailed technical description of the system A complete list of all system components with associated manufacturers literature specifications warranties and instances which would void manufacturers warranty A complete copy of the User s Manual Complete installation instructions A recommended post installation acceptance test procedure Checklist including all appropriate set points and test procedures They will include the following Verify th
19. ied PV module to controller Controller to battery Controller to loads Wiring identification method colour coded labelled Solar Home System Specifications and Service Standards 7 January 2010 Sri Lanka Renewable Energy for Rural Economic Development Project y Yes No A v v mA Yes No Yes No Yes No A Yes No Yes No Annex 2 Page 2 of 3 8 Luminaire a Number of luminaire b Number of fluorescent luminaires c Number of LED luminaires For fluorescent Luminates d Model number s e Wattage s f Lumen output s g Luminous efficacy h Minimum striking voltage i Maximum continuous operating voltage j Operating frequency k Electrical waveform voltage symmetry O Maximum crest factor m Open circuit voltage protection Attach test certificate For LED Luninares n Model number s e Wattage s f Lumen output s g Luminous efficacy h Lumen output after 2000 hours i Minimum striking voltage j Maximum continuous operating voltage 9 Socket Outlet a 12 V DC socket outlet b Reverse polarity protection c 6and or 9 V outlet 10 Other Components Plug and Play Systems Features a b Cc d 11 Exceptions and Variations to the Specifications Taken and Explanations Solar Home System Specifications and Service Standards 7 January 2010 Sri Lanka Renewable Energy for Rural Economic Development Project kHz Yes No L W L y y Yes No
20. ing diodes are used they must exhibit a low forward voltage drop 6 5 Battery temperature compensation circuitry is not required if flooded lead acid batteries are used However if temperature compensation is not provided then the set points must correspond to the type of battery and the ambient temperature of the site where the SHS is to be used Temperature compensation is required if sealed lead acid batteries are used 6 6 The load must be controlled by a low voltage disconnect LVD device The LVD must be capable of handling at least 150 percent of the maximum expected continuous load e g assuming all end use devices are simultaneously on It should be factory pre set to disconnect and reconnect voltages corresponding to the safe operation of the battery under ambient temperature conditions For example a disconnect voltage of 11 7 V DC 0 1 V DC and reconnect voltage of 12 9 V DC 0 2 V DC is suitable for safe operation of lead acid batteries used in SHS Discharge of automotive type lead acid batteries below a depth of discharge of 75 of rated capacity should not be permitted 6 7 Maximum current draw of the controller when no LEDs are lit should not exceed 10mA 6 8 The charge regulator controller must be protected against damage caused by short circuit of the input and output terminals and reverse polarity of connections The controller shall have electronic or manual circuit breaker capability for load inrush currents up to 10 tim
21. ions These include the modules to structure structure to pole and pole to building attachments 4 4 The modules may be roof or ground mounted a Roof mounting minimum clearance between the PV array and the roofing material must be at least 10 cm Anchoring of the mounting structure must be to the building and not to the roofing material b Ground mounting A metal pole must be used with the module s attached at the top of the pole The module s must be at least 4 metres off the ground The pole must be anchored in concrete at least one metre deep in the ground The pole and mounting structure must be sufficiently rigid to prevent twisting in the wind or if large birds alight on the array 5 Battery Storage 5 1 The rechargeable battery will preferably consist of one 12 V DC lead acid battery but no more than two identical 12 V DC lead acid batteries connected in parallel 5 2 The battery ampere hour Ah capacity should be such that it will permit a minimum of three days of 2 The MSCC Format is available for download at http www energyservices lk pdf shs_selfcomp_08jul04 pdf Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 2 of 8 autonomy where the maximum depth of discharge is limited to 75 percent of rated capacity It is recommended that the battery be sized to permit five days of autonomy in regions where extended
22. is device must at a minimum indicate when the battery condition is a Suitable to operate all loads e g voltage greater than 12 5 V DC b Energy conservation required e g battery voltage less than 11 9 V DC 7 3 These indicators may be LEDs or analog or digital meters 7 4 The chosen device must come appropriately labelled such that the user does not have to refer to a manual to understand the existing battery condition Equipment Enclosure 8 1 The equipment enclosure s will house the batteries charge controller charge indicators low voltage disconnect and all interconnecting wiring The enclosure s must not be installed in a location that could be subject to flooding or be exposed to rain 8 2 The batteries must be housed in a vented compartment All parts of the compartment subject to battery acid contact must be acid resistant This compartment must be built strong enough to accommodate the weight of the battery This compartment must adequately support and vent wet lead acid batteries Access to the battery compartment by children must be prevented 8 3 The remainder of the system components electronics switches etc must be housed in a separate compartment or enclosures which prevents the system components being affected by battery acid spills or fumes The compartment or enclosure design must allow the internal electronic equipment to operate within acceptable operating temperature limits It must be weather dust and i
23. ject to the following 10 13 10 14 10 15 10 16 10 17 10 18 10 19 10 20 10 21 10 22 Lumen efficacy lumen output lm power consumption W should exceed 70lm W inclusive of reflectors diffusers and covers Lumen output after 2000 hours of operation of the luminaire should be at least 80 percent of initial lumen output 1 e initial lumen output is measured after a 20 minute initial burn in period Note LED lamps require electronic power management and or thermal management design to extend the life and retain the LED chip s lumen output LED luminaires with integrated batteries this is optional if you are going to support such lights 10 15 1 Luminaires with integrated lead acid or Li ion rechargeable batteries should have citcuitry to prevent over charge and over discharge according to battery manufacturers specifications Luminaires with Ni MH rechargeable batteries and PV module could use passive PV charging However the charge current should be limited to a maximum of 2 110 at a battery cell voltage of 1 4 V Protection of Ni MH batteries to prevent over discharge to less than 0 8 V to 1 V is required 10 15 2 Should provide at least 4 hours of lighting per charge for lamps that are recharged daily Luminaires designed for less frequent recharge should have appropriately larger battery capacity e g 4 hours per day for 7 day operation should have adequate battery capacity to operate lamp for 28 hours before rec
24. ject without additional certification requirements Golden Sun is China s national certification scheme for PV products established under GEF and World Bank sponsored project Establishment of National Certification Program for PV Products A list of accredited products can be found at http www cgc ore cn eng news_show asp id 4 2 4 SHS components that have been tested in accordance with an internationally recognized preferably IEC standard at an ISO IEC 17025 accredited laboratory and approved for use in World Bank funded rural electrification projects are eligible for use in the Project on a case by case review by the Administrative Unit of the Project AU 3 Documentation 3 1 Ata minimum the following documents should be provided to the customer 3 1 1 Duly completed Customer Acceptance Receipt CAR made mandatory by the RERED Project 3 1 2 User s Manual along with maintenance instructions 3 1 3 Additional warranty information if exceeds recommended minimum terms given in the CAR 3 1 4 Customer Complaint Cards together with addresses of the relevant branch dealer franchisee head office of the supplier dealer and contact details of the Administrative Unit of the RERED Project Such cards shall be simple to fill in and post 3 1 5 Technicians visit record card 3 2 User s Manual The SHS supplier must provide a User s Manual intended for the customers to be included with each system The User s Manual
25. lt 1 8 V cell Rest Period OA I hour Battery on open circuit 5th recharge lho U 2 4 V cell Constant current charging 5th recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 6 C29 discharge 0 5 x lio U lt 1 8 V cell Rest Period OA I hour Battery on open circuit U 2 4 V cell Constant current charging 6t recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 7 C100 discharge 0 1 x Ino U lt 1 8 V cell Rest Period OA I hour Battery on open circuit Th recharge lio U 2 4 V cell Constant current charging 7th recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 8 Cs discharge 2 x lio U lt 1 8 V cell Rest Period OA I hour Battery on open circuit 8 recharge Tio U 2 4 V cell Constant current charging 8th recharge 2 4 V cell lio Duration 8 hours Constant voltage charging 6 Cio Test 9th discharge lio U lt 1 8 V cell Rest Period OA 1 hour Battery on open circuit 9th recharge lio U 2 4 V cell Constant current charging 9th recharge 2 4 V cell lio Duration 8 hours Constant voltage charging Table 2 Renewable Energy for Rural Economic Development Project BATTERY TEST REPORT Interim Battery Acceptance Short Test Battery Company Brand amp Model Number Samples obtained from Battery type Select type Flooded VRLA AGM Tubular Flat plate Battery rated voltage Date Samples collected For Flooded battery select one a Battery filled onsite b Batter
26. n the rated voltage is applied with reverse polarity 10 7 The inverter should be protected against damage by the application of voltage under open circuit conditions e g when the light bulb is removed or has failed 10 8 Lenses covers grids etc if used must be easily removable by the user for bulb replacement or for cleaning 10 9 No blackening or reduction in the lumen output by more than 10 should be observed after 1 000 ON OFF cycles two minutes ON and four minutes OFF is one cycle 10 10 The luminous efficacy of the light inclusive of the power requirement of the inverter must be either a greater than 30 lumens watt with any reflectors lenses covers or grids if used in place or b greater than 35 lumens watt without reflectors lenses etc in place 10 11 Luminaires must be insect proofed and corrosion and weather resistant 10 12 Luminaires must be marked with the manufacturer model number rated operating voltage rated current and date of manufacture or batch number Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 6 of 8 The use of LED luminaires is allowed for area lighting task lighting and for use as night lights Until such time a proper standard for testing LED luminaires for off grid applications becomes available LED luminaires will be allowed for area and task lighting in the Project sub
27. ndicator Solar Home System Specifications and Service Standards 7 January 2010 Sri Lanka Renewable Energy for Rural Economic Development Project Annex 2 Wp deg C roof pole Ah o month mm mm litres Yes No y y Yes No Annex 2 Page 1 of 3 g h i i k D m n p 1 Maximum current handling capability Type of current leakage protection Voltage drop between module and battery terminals at controller regulator Temperature compensation LVD maximum current handling capability LVD set points Disconnect voltage it Reconnect voltage Maximum current draw when no LED s are not lit Short circuit protection Reverse polarity protection Over current protection inrush current at 10 microseconds Lightning surge protection Module battery loads disconnection method Attach test certificate 5 System Monitoring a b Battery state of charge meter indicator Type of indicator Indications settings Fully Charged Suitable to Use Energy Conservation Other explain 6 Equipment Enclosure a b c d io 7 Wiring D b o d f g h Type of battery enclosure Material Type of controller housing Material Protection method against battery acid fumes etc Wire material type Wire cross sections PV module to controller Controller to battery Controller to loads Lengths of wiring suppl
28. nsect resistant 8 4 The enclosure must be constructed of a durable material so as to last 10 years without maintenance Wiring 9 1 Stranded and flexible insulated copper wiring must be used Minimum acceptable cross section of the wire in each of the following sub circuits is as follows a From PV module to regulator controller 2 5 mm b From regulator controller to battery 2 5 mm2 Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 5 of 8 9 2 9 3 9 4 9 5 c From controller to loads 1 5 mm2 Notwithstanding the above minimum wire size requirements all wiring must be sized to keep line voltage losses to less than 5 in each sub citcuit and to allow the circuit to operate within the capacity rating of the wire All exposed wiring with the possible exception of the module interconnects must be in conduits or be firmly fastened to the building structure Wiring through roofing walls and other structures must be protected through the use of bushings Wiring through roofing must form a waterproof seal Where the wiring is through flammable material e g thatched roofs they must be in a metal conduit Adequate fasteners conduits bushings and other installation hardware must be supplied All wiring shall be colour coded and or labelled Field installed wiring must be joined using terminal strips or screw connectors Solde
29. nts Photovoltaic Modules tested to PVRS standards at an ISO 17025 accredited laboratory will also be accepted In the absence of above single crystalline or poly crystalline modules must be type tested and certified in accordance with IEC Solar Home System Specifications and Service Standards 7 January 2010 Annex 1 Sri Lanka Renewable Energy for Rural Economic Development Project Page 1 of 8 61215 and thin film photovoltaic modules must be type tested and certified in accordance with IEC 61646 or IEEE Specification 1262 1995 All modules must be manufactured in ISO9001 Quality Management System accredited factories For Photovoltaic modules of differing sizes made by the same manufacturer using the same i production processes and construction methods it materials and iii quality control procedures as a module already accepted for use under the Project a Manufacturers Self Compliance Certificate MSCC will be accepted in lieu of above requirements 3 3 2 For modules of less than 20 Wp where such product certification is not available and a MSCC cannot be furnished qualification requirement is relaxed to passing the Outdoor Exposure Humidity and Robustness of Termination requirements as per IEC 61215 or 61646 and the said PV panel must be manufactured in an ISO 9001 accredited manufacturing facility 3 4 If more than one module is used identical models shall be used and they shall be connected in parallel 3 5 Each module must be cl
30. perature corrected values The capacity correction is as follows 25 C __ Cyn 10 7 1 0 006 T sasuea 25 C Solar Home System Specifications and Service Standards 7 January 2010 Annex 3 Sri Lanka Renewable Energy for Rural Economic Development Project Page 3 of 3
31. ptance Short Test Procedure IBASTP given in Annex 3 with the acceptance criteria being battery capacity being not less than 100 of nominal Cio capacity after 5th Cio test and battery capacity being not less than 95 of the nominal Cio capacity after the 6 Cio test according to the test procedure laid out therein 5 5 2 IEC 61427 Ed 2 Secondary cells and batteries for photovoltaic energy systems a For flat plate batteries after 3 test sequences procedure defined under paragraphs 8 4 1 8 4 2 and 8 4 3 of IEC 61427 the battery should retain at least 80 of its initial Cio capacity as pet end of test conditions defined under paragraph 8 4 4 of IEC 61427 b For tubular plate batteries after 8 test sequences procedure defined under paragraphs 8 4 1 8 4 2 and 8 4 3 of IEC 61427 the battery should retain at least 80 of its initial Cio capacity as per end of test conditions defined under paragraph 8 4 4 of IEC 61427 5 5 3 Batteries bearing the PV GAP Mark or having been tested and certified at an ISO 17025 accredited laboratory in accordance with PVGAP PVRSSA Lead acid Batteries for Solar Photovoltaic Energy Systems General Requirements and Methods of Test for Modified Automotive Batteries will be accepted 5 5 4 Also accepted are tubular plate batteries tested and certified in accordance with Indian Standard IS 13369 1992 Stationary Lead Acid Batteries with Tubular Positive Plates in Monobloc Containers
32. ring or crimping in the field must be avoided Wire nuts are not allowed The rated current carrying capacity of the joint must not be less than the circuit current rating All connections must be made in junction boxes Fittings for lights switches and socket outlets may be used as junction boxes where practical 10 Luminaires Luminaires used in a PV system must be either Fluorescent or LED The following applies for Fluorescent Luminaires 10 1 Minimum operating voltage when the tube light or compact fluorescent light CFL will still strike shall be less than 85 of the rated voltage 10 2 Maximum continuous operating voltage without damage to the circuit must be at least 125 of the rated voltage 10 3 The minimum operating frequency should be 20 kHz and the wiring length from the inverter to the fluorescent light bulb must be kept short to minimise radio interference 10 4 The electrical waveform on the fluorescent tube terminals must be symmetrical in time to within 10 percent i e 60 40 waveform maximum difference in symmetry over the voltage range of 11 0 to 12 5 V DC at an ambient temperature of 25 degrees C 10 5 The maximum crest factor ratio of maximum peak to RMS voltage of the waveform applied to the fluorescent tube light shall be less than 2 10 6 The input connections to the inverter should prevent the application of voltage with reverse polarity or the inverter should be protected against damage whe
33. uming 10 module derating and 20 battery round trip Wh losses Actual operating hours per day will vary depending on the number and wattage of the lights and other appliances switched on at any given time and peak hours of sunlight available on any given day 1 2 The SHS components shall be packaged to provide convenient installation at a remote customer home site by a supplier trained technician Systems that are fully integrated i e Plug and Play Systems shall be set up by the customers themselves The system shall be constructed such that a user can perform routine maintenance such as adding battery water and replacing light bulbs and fuses and a technician can easily perform system diagnostics or replace components 1 3 The supplier dealer will provide the most appropriate system integration components assembly and packaging that meet both the customers needs and all the specifications in Annex 1 Solar Home System Requirements The specifications of the SHS should be summarised in Annex 2 Solar Home System Specification Sheet along with the required test certificates see section 2 Any exceptions and variations to the specifications must be explicitly stated the section titled Exceptions and Variations in Annex 2 The scope and reasons for each listed exception and variation must be fully explained with supporting data 2 Certification Requirements 2 1 Products to be financed in the International Development Association
34. upplied All set point voltages will be verified and documented with the results dated and the records maintained at the suppliers facility Operating Environment The entire system shall be designed and built to withstand the environmental conditions found in Sri Lanka For design purposes consider that the temperature could range from zero to 40 C and humidity levels could reach 100 percent The PV array and support structure must be able to withstand wind gusts up to 100 km hour without damage All wiring enclosures and fixtures that are mounted indoors must be resistant to high humidity corrosion and insect and dust intrusion Use of corrosion resistant terminals is required Protection of the electronic circuit boards from corrosion by potting or applying a conformal coating is recommended Photovoltaic Array 3 1 The photovoltaic array will consist of one or more flat plate photovoltaic modules Each module should comprise no less than 36 series connected single or poly crystalline silicon solar cells Flat plate thin film modules could also be used 3 2 The photovoltaic array should have a peak power output of at least 10 Wp under Standard Test Conditions STC as defined in IEC 60904 1 The peak power output for thin film modules should be the value after light soaking 3 3 1 Photovoltaic modules bearing PV GAP mark or seal or the Chinese Golden Sun certification will be accepted for use in the Project without additional requireme
35. y obtained fully charged Nominal Ah Rating C20 Nominal Ah Rating C10 Testing Period Start date End date No of samples Testing Engineer name Signature amp Date Signature amp Date Apptoved by name and designation Solar Home System Specifications and Service Standards 7 January 2010 Sri Lanka Renewable Energy for Rural Economic Development Project Annex 3 Page 2 of 3 Discharge Capacity Discharging Current End of Discharge Battery Measured amp Corrected Capacity Test A Voltage V cell Temperature Ah Pass Criteria deg C Average Max Min 1 Cio Test 1xlo 1 80 2 Cio Test 1xlo 1 80 4 Cio Test 1xlo 80 5 Cio Test 1xlo 80 Measured Capacity 2 100 Nominal Capacity C29 Test 0 5 x lo 1 80 Cioo Test 0 1 x lo 1 80 C Test 2x lo 1 70 6 Cio Test 1x ho 1 80 Measured Capacity 95 Nominal Capacity Maximum and minimum values for the batteries at least three represented in average value Comments Depending on the battery temperature or ambient temperature in the laboratory during the tests a correction of the capacity is necessary if the temperature deviates by more than 3 degrees from 25 C A correction factor of 0 6 per degree is commonly used see formula below The formula is valid for temperatures between 10 and 35 C The pass criteria must be fulfilled for the tem
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