SOLAR HOME LIGHT

Solar Home Light Components

• 10wp Solar PV Module under STC
  • Module having crystalline silicon solar cells.
  • The module efficiency not less than 10%.
  • The terminal box on the module has a provision of opening it for replacing the cable.
  • a) Name of the Manufacturer and/ or distinctive Logo b) Model and/ or Type No. c) Serial No. d) Year of manufacture.
• SMF VRLA Battery

  For Model-I, sealed maintenance free lead acid battery with a capacity of up to 7 AH, at voltages of up to 12V @ C/20 rate of discharge. (ii) For Models – II, III & IV, battery have a minimum rating of 12V, 12 Ah or 12V, 20 Ah at C/20 rate of discharge, depending on the Model.

  75 % of the rated capacity of the battery is between fully charged & load cut off conditions.

• Light Source: White Light Emitting Diode (LED)
  • The colour temperature of W-LED(s) used in the system is in the range of 5500oK –6500oK.
  • W-LED(s) doesn’t emit ultraviolet light.
  • The light output from the W - LED is constant throughout the duty cycle.
• Electronics
  • Efficiency of the electronic system is > 85%.
  • Electronics have temperature compensation for proper charging of the battery throughout the year.
  • The idle current is less than 1 mA for Models-I & II, and for Models-III & IV, it is less than 2mA.
  • The voltage drop from module terminals to the battery terminals does not exceed 0.6 volts including the drop across the diode and the cable when measured at maximum charging current.
  • The PCB containing the electronics is capable of solder free installation and replacement.
  • Necessary lengths of wires/ cables, switches suitable for DC use and other protections is provided.
• Electronic Protections
  • Adequate protection is incorporated under “No Load” condition, e.g. when the lamps are removed and the system is switched ON.
  • The system has protection against battery overcharge, deep discharge condition.
  • Load reconnect is provided at 80% of the battery capacity status.
  • Adequate protection is provided against battery reverse polarity.
  • Fuses are provided to protect against short circuit conditions.
  • Protection for reverse flow of current through the PV module(s) is provided.
• Indicators

  The system has got two indicators, green and red. The green indicator indicates the charging under progress and glows only when the charging is taking place. It stops glowing when the battery is fully charged. Red indicator indicates the battery “Load Cut Off” condition

• Mechanical Components
  • Corrosion resistant metallic frame structure is provided to hold the SPV module.
  • The frame structure has provision to adjust its angle of inclination to the horizontal, so that it can be installed at the specified tilt angle.
  • Light source is either for wall mounted or ceiling mounted or can be hung from the ceiling in a stable manner, as per site requirements.
  • A vented plastic/ wooden/ metallic box with acid proof corrosion resistant paint for housing the storage battery indoors is provided.