A stand alone solar
photovoltaic street lighting system comprises a compact
fluorescent lamp, lead acid battery, PV module mounting
hardware, battery box, operation, instruction and maintenance
The system is designed to automatically switch ON at dusk
operate throughout. The right and automatically switch OFF at
the dawn, under average daily insulation of 5 KWH/ sq.m on a
Solar Street Light
consists of positives plate, (tubular) lead Exide battery the
minimum rating of battery is 12V. 75AH at (C/10) discharge rate.
It is low maintenance battery that gives reliable services if
properly used. It should be regularly charged with the
supplied SPV module. The charging & discharging operation of
the battery is controlled through charge controller. It is
placed inside a suitable luminaire.
electrolyte type, positive tubular plate, low maintenance lead
The battery is
having a minimum rating of 12V, 75AH (at C/10) discharge rate.
The battery is
capable of withstanding discharge to a level of 23% of its
rated capacity, without damage or loss of cycle life.
About Photovoltaic & SPV Module
The PV module(s) shall contain crystalline silicon
solar cells. The power output of the module(s) under STC is 37
W (if 2 modules are used) or 74 W (in case of a single
module). The operating voltage corresponding to the power
output mentioned above 16, 4V. Photovoltaic means generation
of voltage (electricity) with the help of photo (light), it is
semi conductor device generally called solar cell. When the
source of light is the sun It is called Solar Photovoltaic.
In SPV Module, the solar cells are connected & mounted in a
modular form to give required output to a system. This is a
low voltage DC source device. When it is exposed to sun, it
produces electrical energy from light energy. The SPV Module
chargers the battery which connected through the controller of
SL SOLAR STREET LIGHT is 37W under STC. The operating voltage
corresponding to the power output mentioned above is 16.4V.
It mainly consist of the following:
SPV Module 37 W
with a metallic frame mounting structure for proper mounting &
circuit comprises of one charged controller unit and inverter
(luminaire) units. The circuits are mounted inside the
attractive mentalic body fitted with switch fuse in and
connecting point etc. 2 in. 11W CFL lamps are fitted inside
the luminaire unit for connection with cable.
About Compact Flourscent Lamp (CFL)
SL SOLAR STREET LIGHT consists of two number of 2
pin. 9W CFLs which operated at high frequency (20-30KHZ). When
the output of battery is supplied through inverter circuits.
The efficiency and life of CFL is much more compared to
ordinary lamp and cormesiess power. The light output of the 9W
CFL is equivalent to 60W incandescent lamp. It is mounted
inside luminaire units.
The Lamp is of
compact fluorescent (CFL) type, either 4-pin or 2-pin type,
with a rating of 11W, for the 4 pin type CFL. Adequate
pre-heating circuit and relay is provided.
output from the lamp is around 900 +/- 5% lumens.
The lamp should
be housed in a weatherproof assembly suitable for outdoor use,
with a reflector on its back. While fixing the assembly, the
lamp should be held in a base up configuration.
Some of the common faults which may come during use
of Solar Street Light can be rectified by the user himself as
Lamp not glowing
Make proper connection
between charge controller, battery & luminaries with
Improper lamp connection
Fix lamp properly.
Metal strip not in its place
of properly connection.
Place the metal strip
between CFL Properly with Module Battery by observing
(green) does not glow.
Charged controller fuse blow
Improper connection of (b).
module battery with charge
Make connection of charge
controller. Properly with module battery by observing