SOLAR HOME SYSTEMS

1. DEFINITION
   
   A solar home system aims at providing solar electricity for operating lights and / or fan or energizing a DC operated portable TV set for specified hours of operation per day.
    
2. MODELS

   MODEL — 1 (1 Light Point)

   Component	Specifications
   PV Module	1X 18 Wp under STC
   Lamps	1X CFL (9W /1 1 W)
   Battery	X12V.20AHTubularPlate, low maintenance type Lead Acid Battery
   Other Components	Controlelectronics, Module mounting hardware, Battery box, Inter-cinnecting wires/ Cables, Switches Operation, instruction and maintenance manual

MODEL - 2 (2 Lights)

Component	Specifications
PV Module	1x 37 Wp under STC
Lamps	2X CFLs (9W/11W)
Battery	1 x 12V 40 AH Tubular Plate, low maintenance type Lead Acid Battery
Other Components	Control electronics. Module mounting hardware. Battery box. Inter-connecting wires/cables, Switches. Operation. instruction and maintenance manual.

MODEL - 3 (1 Light and I Fan)

Component	Specifications
PV Module	1 x 37 Wp under STC
Lamps	1 x CFL ( 9w / 11w)
Fan	1 x DC Fan (with wattage less than 20W)
Battery	1 x 12V. 40 AH Tubular Plate low maintenance type Lead Acid Battery.
Other Components	Control electronics. Module mounting hardware. Battery box. Inter-connecting wires/cables. switches. Operation. instruction a maintenance manual

MODEL - 4 (2 lights and 1 fan)

Component	Specifications
PV Module	2 x 37 Wp under STC
Lamps	2 x CFL ( 9w / 11w)
Fan	1 x DC Fan (with wattage less than 20W)
Battery	1 x 12V. 75 AH Tubular Plate low maintenance type Lead Acid Battery.
Other Components	Control electronics. Module mounting hardware. Battery box. Inter-connecting wires/cables. switches. Operation. instruction a maintenance manual

MODEL - 5 (4 lights)

Component	Specifications
PV Module	2 x 37 Wp or 1 x 74 Wp under STC
Lamps	4 x CFL ( 9w / 11w)
Battery	1 x 12V. 75 AH Tubular Plate low maintenance type Lead Acid Battery.
Other Components	Control electronics. Module mounting hardware. Battery box. Inter-connecting wires/cables. switches. Operation. instruction a maintenance manual

Notes :

1. All models will rave a socket to provide power for a 12V DC TV set which is purchased separately.
2. A small white LED may be provided as an optional feature, with an independent switch.

3. DUTY CYCLE
    

   MODELS	AVERAGE HOURS OF OPERATION/DAY
   Model 1	1 Light. 3-4 Hours
   Model 2	2 Lights. 3-4 Hours
   Model 3	1 Light. 1-2 hours. 1 Fan — 1-2 hours
   Model 4	2 Lights, 2-3 hours. 1 Fan-2-3 hours
   Model 5	4 Lights, 3-4 Hours.

4.  LAMPS
    
   1. The lamps will be of compact fluorescent (CFL) type. either 4 - Pin or 2 Pin types. with ratings of 9W or 1W. For the 4 - Pin type CFLs. a suitable pre-heating circuit must be provided
       
   2. The tight output from the lamps should be around 600 +1- 5 % lumens (for 9 W CFL) and 900 ÷1- . % lumens (for 11 W CFL ) Also please see (iii) of VI given below
       
   3. The lamps should be housed in an assembly suitable for indoor use. with a reflector on its back While fixing the assembly. the lamp should be held in a base up configuration
       
5. BATTERY
    
   1. The battery will be of boded electrolyte type. positive tubular plate. low maintenance lead acid battery
       
   2. The battery will have minimum rating of 12V 20 or 40 or 75 Ah (at C/10) discharge rate depending on Model
       
   3. 75 % of the rated capacity of the battery should be between fully charged & load cut off configuration.
       
6. ELECTRONICS
    
   1. The inverter should be of quashing wave/sine wave type. with frequency in the range of 20- 35 KHz Half-wave operation as not acceptable
       
   2. The total electronic efficiency should be at least 80 %
       
   3. No blackening or reduction in the lumen output by more than 10% should be observed after 100J ON/OFF cycles (two minutes ON followed by four minutes OFF is one cycle)
       
   4. The idle current consumption should not be more than 10 mA
       
   5. Electronics should operate at 12 V and should have temperature compensation for proper charging of the battery through out the year.
       
   6. Necessary lengths of wires / cables, switches suitable for DC use and fuses should be provided
       
7. PV MODULE (S)
    
   1. The IV module (s) shall contain crystalline silicon solar cells
       
   2. The power output of the module(s) under STC should be a minimum of 18 W or 37 W or 74W In case of Model’ & 5 either two modules of37 W each or one module of 74 W should be used.
       
   3. The operating voltage co-responding to the power output mentioned above should be 164”
       
   4. The open circuit voltage o the PV modules under SIC should be at least 21 0 Volts.
       
   5. The terminal box on the module should have a provision for opening for replacing the cable if required
       
   6. A strip containing the following details should be laminated inside the module so as to be clearly visible from the front side
       
      1. Name of the Manufacturer or distinctive Logo
      2. Model or Type No.
      3. Serial No
          
8. DC FAN
   
   The wattage of the fan should not be more than 20 Watts and it should operate at 12V DC
    
9. ELECTRONIC PROTECTIONS
    
   1. Adequate protection is to be incorporated under no load conditions. e g. when the lamps are removed and the system is switched ON
       
   2. The system should have protection against battery overcharge and deep discharge conditions
       
   3. Fuses should be provided to protect against short circuit conditions.
       
10. MECHANICAL COMPONENTS

1. Metallic frame structure (with corrosion resistance paint) to be fixed on the roof of the house 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 it can be installed at the specified tilt angle.
    
2. A vented metallic box with acid proof acid proof resistance paint for housing the storage battery indoors should be printed

11. OTHER FEATURES
     
    1. The s/stem should be provided with 2 LED indicators a green light to indicate charging in progress and a red LED t indicate deep discharge condition of the battery. The green LED should glow only when the battery is actually being charged.
        
    2. There will be a Name Plate on the system which will give
       1. Name of the Manufacturer or Distinctive Logo
       2. Serial Number
           
    3. Components and parts used in solar home systems should conform to the latest BIS specifications. wherever such specifications are available and applicable.
        
    4.  The 2V module(s) wilt be warranted for a minimum period of 10 years from the date of supply and the solar home systems (including the battery ) will be warranted for a period of two years from the date of supply
       The Warranty Card to be supplied with the system must contain the details of the system supplied, as given in the Appendix to the Appendix to this ANNEXURE The manufactures can also provide a provide information about the system and conditions of warranty as necessary
        
    5. An Operation. Instruction and Maintenance Manual, in English and the local language should be provided with the solar home system
       The following minimum details must be provided in the Manual
       1. At out photovoltaics
       2. At out solar home system its components and expected performance.
       3. At out PV module
       4. At out CFL
       5. At out battery
       6. Clear instructions about mounting of PV module(s)
       7. At out electronics
       8. At out charging and significance of indicators
       9. DO’s and DON’T’S
       10. Clear instructions on regular maintenance and trouble shooting of solar home system.
       11. Name and address of the person of service center to be contacted in case of failure of complaint.