All the models of Solar Home Lighting Systems should be designed to operate for 3-4 hours daily. The actual duration of lighting could vary depending on the location and season, etc.

Technical Specifications & General Specifications:
Model Component :
Specifications :

PV Module 1 x 50 W under
Lamp 1 x LED (8W)
DC FAN 1 x 1 (30W)
Battery 1 x 12V, 24AH.
Lead Acid Battery or VRLA or Gel Type.

 One Light Point
 Control electronics.
 Module mounting hardware
 Battery box
 Inter connecting wires / cables, Switches,
 Operation, instruction and maintenance manual.
 PV Module 1 x 100 W under STC
 LED BULB 4 x (12W) + DC FAN 1 X (30W)


i) All models should have a socket to provide power for a 12V DC TV set which
can be purchased separately.
ii) A small white LED could be provided as an optional feature, with an
independent switch.


(a) Both crystalline and thin film technology modules are allowed in the system.
The PV module should have a certificate of testing conforming to IEC 61215
Edition II / BIS 14286 or IEC 61646 for crystalline and thin film PV modules
respectively. The manufacturer should produce the certificate for a higher
wattage module, in case the certificate is not available for the offered PV
module. Further, the manufacturer should certify that the supplied module is
also manufactured using similar material, design and process as that of the
certified PV module. The certificate should be from an NABL or IECQ
accredited Laboratory.
(b) The power output of the module(s) under STC should be a minimum of 18 Wp
or 37 Wp or 74 Wp. In case of Model-4 either two modules of 37 Wp each or one module of 74 Wp can be used. For thin film PV modules, the specified
values refer to the stabilized power output after the initial degradation. The
module efficiency should not be less than 12%.
(c) The operating voltage corresponding to the power output mentioned above
should be 16.4±0.2V.
(d) The open circuit voltage of the PV modules under STC should be at least 21.0
(e) The terminal box on the module should have a provision for opening for
replacing the cable, if required.
(f) Each PV module must use a RF identification tag (RFID), which must contain
the following information:
(i) Name of the manufacturer of PV Module
(ii) Model or Type Number
(iii) Serial Number
(iv) Month and year of the manufacture
(v) I-V curve for the module
(vi) Peak Wattage of the module at 16.4 volts
(vii) Im, Vm and FF for the module
(viii) Unique Serial No and Model No of the module
Until March 2013, the RFID can be inside or outside the module laminate, but
must be able to withstand harsh environmental conditions. However from 1st
April 2013 onwards; RFID shall be mandatorily placed inside the module
(g) A distinctive serial number starting with NSM will be engraved on the
frame of the module. The distinctive number starting NSM will also be
screen printed on the tedlar sheet of the module.


(i) The battery will be Lead Acid, Tubular positive plate flooded electrolyte or Gel
or VRLA Type
(ii) The battery will have a minimum rating of 12V, 20 or 40 or 75 Ah (at C/10)
discharge rate depending on Model.
(iii) 75 % of the rated capacity of the battery should be between fully charged &
load cut off conditions. Asd

(i) The lamp should be a 9 and 11 Watt compact fluorescent lamp (CFL) with 4
pins only along with proper pre-heating circuit.
(ii) The light output from the lamps should be around 600±5 % lumens (for 9 W
CFL) and 900±5 % lumens (for 11 W CFL).
(iii) 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 preferably
held in a base up configuration.
(iv) No blackening or reduction in the lumen output by more than 10% should be
observed after 1000 ON/OFF cycles (two minutes ON followed by four minutes
OFF is one cycle).

(i) The inverter should be of quasi sine wave/sine wave type, with frequency in the
range of 20 - 30 kHz. Half-wave operation is not acceptable.
(ii) The total electronic efficiency should not be less than 85 %.
(iii) The idle current consumption should not be more than 10 mA

The wattage of the fan should not be more than 20 Watts and it should operate
at 12V DC.

(i) Adequate protection is to be incorporated under no load i.e. when the lamps are
removed and the system is switched ON.
(ii) The system should have protection against battery overcharge, deep discharge
(iii) Fuses should be provided to protect a
gainst short circuit conditions.
(iv) Protection for reverse flow of current through the PV module(s) should be
(v) Electronics should have proper temperature compensation for proper charging
of the battery throughout the year

(i) 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.
(ii) A vented metallic/ plastic box with acid proof corrosion resistance paint for
housing the storage battery indoors should be provided.
(i) The system should be provided with 2 LED indicators: a green light to indicate
charging in progress and a red LED to indicate deep discharge condition of the
battery. The green LED should glow only when the battery is actually being
charged (It should stop glowing when the battery is fully charged).
(ii) Components and parts used in solar home systems should conform to the latest
BIS specifications, wherever such specifications are available and applicable.
(iii) The complete Solar Home System (including the battery) will be warranted
for a period of two years from the date of supply. PV modules used in
Solar Home Lighting System must be warranted for their output peak watt
capacity, which should not be less than 90% at the end of Twelve (12) years
and 80% at the end of Twenty five (25) years.
The Warranty Card to be supplied with the system must contain the details of
the system supplied. The manufacturers can also provide additional information
about the system and conditions of warranty as necessary.
(iv) Necessary lengths of wires/ cables, switches suitable for DC use and fuses
should be provided.
(v) An Operation, Instruction and Maintenance Manual, in English and the local
language, should be provided with the Solar Home System.