The
Envirolight ES57
is a revolutionary new energy efficient streetlight
for minor roads ( SANS 10098 categories B1 to B3,
C and maybe A4). It uses a High Power CFL lamp, electronic
control gear and an optimised purpose designed reflector
to ensure that all light is directed towards the required
target areas.
It
further provides instant re strike after power failures
or voltage dips, full cut- off features and has a
light source of high quality with a Colour rendering
index ( CRI ) of 82. A lightweight construction with
a robust and rigidly designed luminiare ensures minimum
material for maximum strength and has been designed
for a life expectancy in excess of 20 years.
MATERIALS
Modern
polymers are used extensively as follows:
Housing,
base and bulkhead
Mineral
filled polypropylene with UV protection with a proprietary
UV protection additive package. This material is highly
robust and impact resistant and tested to withstand
loads in excess of real life requirements.
The
material has been tested for UV resistance and excellent
results have been obtained over the last 15 years.
There is virtually no de-gradation due to UV radiation
resulting in a material with a life expectancy of
well in excess of 25 years.
Other applications of this material include automotive
bumpers as well as external automotive trimming items.
Lens
The
lens is manufactured from PMMA, an acrylic selected
for its inherent qualities. These qualities include
strength, high transparency, and resistance to scratching,
non- static qualities and long life with no discoloration.
Other
applications of this material include automotive taillights,
home consumption products and plastic crockery.
Reflector and Lamp holder
These
two components are manufactured from Polycarbonate
( GEC Polycarbonate –Lexan).
This
material has Smooth molding capabilities with extremely
high surface definition needed for a precision reflector.
It further accepts high gloss aluminium coatings and
is extremely strong and rigid to contribute to the
overall product rigidity. It can withstand very high
temperatures without deformation and is ideal for
this application.
Metalwork
All
metalwork is stainless steel to ensure no rust or
corrosion.
Weight
The
weight of the luminiare is 4.5kg
LAMP DETAIL
The
Envirolight ES57
uses a 57 watt 4 pin compact fluorescent lamp. These
are four pin lamps traditionally powered by electronic
ballasts. These lamps do not have an internal starter;
therefore the other filament terminals (pins) are
made accessible for external connections to the ballast.
Lamps
of different manufacturers can be used and the luminaire
is specifically designed to use the following lamps:
Philips PL-T
OSRAM/ Sylvania Dulux T/E/IN
GE Biax Q/E
The
various manufacturers have different lamp specifications,
but are typically very similar.
Lamp life is typically 12 000 hours if switched off
and on once every 3 years. If the lamp is switched
once every 24 hours as is the case in a streetlight
application, an extension of lamp life of 75% will
be achieved resulting in a lamp life of 20 000 hours.
Lamps
have a Colour rendering index of 82 (1B classification).
Lamps
of various colour temperatures can be utilised.
By
applying the following state of the art modern technologies
and innovations i.e.
