Light Emitting Diode (LED) is a device which emits light when an electric current passes through it. A LED based solar street lighting system aims at providing solar electricity for operating LED for dusk to dawn operation per day.
The broad performance specifications of a white Light Emitting Diode (W-LED) light source based solar street lighting systems are given below.
|Light Source||White Light Emitting Diode (W-LED)|
|Light Output||White colour, minimum six lux when measured from a height of About 12ft and illuminated over an area of at least 8ft dia.Higher Light output will be preferred.|
|Mounting of Light||15ft high pole with an extended arm to hold the luminance.|
|PV Module||37 Wp under STC, measured at 16.4v as V load module Voc Minimum of 21 V.|
|Battery||Flooded lead acid tubular plate, 12 V-40AH @ C/10, Max DoD 75%.|
|Electronics||Min 72% total efficiency|
|Average duty cycle||Dusk to dawn|
|Autonomy||Minimum of 3 days.|