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LED Module 520

Added: Apr 2010

As well as a positive energy balance, LED technology has quite a few more advantages to offer: the compact dimensions of the light emitting diodes create new possibilities for luminaire design and their long service life reduces maintenance costs.

The lumen output of LEDs increases with a reduction of temperature, an excellent characteristic when considered that at our latitudes most burning hours for outdoor lighting are in cool or even cold ambient conditions. And in addition LEDs can be dimmed from 0 to 100%, not only without loss but even according to a progressive characteristic curve.
LEDs for example require effective heat dissipation for cost-efficient and reliable operation. The relatively small surface via which light emitting diodes output light demands custom-designed optics; only in this way can targeted light guidance and glare elimination be achieved.
Siteco has mastered the challenges of using LEDs in town and park luminaires  and now offers its comprehensive range in LED versions. The Mushroom Luminaire, Lantern, Lantern Classic, Lantern Deluxe, City Light Plus, City Light Elegance, City Light Bollard and City Light Pillar now combine classic design with state-of-the-art lighting technology, opening the way for users to achieve significant cost savings with luminaire operation.
The LED Module 520 is used as a light source throughout the new luminaire versions. Its high performance LEDs precisely positioned upon a passive heat sink are combined with special lenses, highly specular reflectors and transparent luminaire enclosures to form an efficient system that is able to save towns and local authorities enormous quantities of energy for outdoor lighting, while at the same time distinctly improving upon quality of light.
The key to such sustainability is supplied by Siteco LED gear tray technology: light sources, optics, thermal management and control gear are all accommodated within a central module. This completely functional and closed unit means that the installation of control gear within masts is a thing of the past. Simultaneously this construction ensures that future, more powerful LED generations can be easily retrofitted, or that existing luminaire systems featuring conventional lamps can be modernised according to the latest state of technology.
The process of lighting control enables further economic and ecological potential. The luminaires are equipped with an electronics module that allows power reduction via a control wire: light can be dimmed according to needs. And the key here is that lumen output does not sink in proportion to power input. The semiconductor characteristic of the LEDs and their intelligent control ensures that with a reduction of power input down to 35%, lumen output is still 50%.
This eco-function is particularly interesting for those operators that due to cost factors still switch off every second luminaire. By dimming LED luminaires they not only save 15% of energy, but also illuminate the road more uniformly; brightness levels are harmonious, and the eye can adjust well to the lighting conditions. And visual perception and therefore safety in road traffic is optimally supported.
The town and park luminaires with LED Module 520 are available with two light distribution patterns (symmetric and asymmetric) and two colour temperatures (3000 and 4000 Kelvin). This enables nearly all lighting tasks to be solved for applications that include residential streets, town squares, parks and gardens.
The version with asymmetric distribution is used primarily for residential roads, service roads and paths. It guides light specifically onto traffic surfaces but prevents stray light from falling onto adjacent facades and apartments. Symmetrical light distribution is required mostly for town squares, but also when green strips along roads are to be illuminated or for when the luminaires are positioned along central reservations.


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