eoben Steel Works, Austria

When the Leoben steel works engineers needed to replace their existing Mercury Vapor highbays that had gradually lost their light output over the years due to blackening reflectors and fading lamps they asked Holophane to provide a solution.

After installing a trial Prismpack luminaire for a year they were convinced that this was the product for the job.

The Prismpack features a unique reflector system comprising an outer aluminium cover and Boroscillicate glass prismatic inner. The prismatic glass creates a very low static charge, meaning that dust is far less likely to be attracted to the surface of the reflector than with standard aluminium reflector designs. Add to this the unique Venturi self cleaning effect whereby the heat generated by the lamp draws air up through the reflector and out through the top in much the same way as a chimney, and it becomes apparent that the reflectors stay very clean even in such a harsh operating climate.

In the hottest part of the works the luminaires utilise the 400W Metal Halide lamp source, which allows the control gear to be mounted well away from the luminaire. The engineers at Leoben have mounted the control gear in a ventilated cupboard in a control room away from the production area. This ensures perfect operation of the control gear and in turn optimum lamp life and output.

In the highest area of the works the Giant Prismpack was selected to enable the use of the highly efficient 1000W Metal Halide lamp source. When coupled with the precise intense light distribution (1.3:1 SHR) of the Giant Prismpack 6650 reflector system the required light level can be achieved with a minimum of luminaires, saving money on installation, energy usage and maintenance in such a high and inaccessible area.