In most cases conventional incandescent lamps are used for tunnel illumination. However, they have low illumination efficiency and the lack of any protection makes them very fragile.
LED luminaires are superseding conventional light sources. They allow maximum illumination of tunnels to be achieved with maximum cost savings. These luminaires are protected from overheating and short circuits. Their use enables energy consumption to be reduced and the risk of electricity mains overload to be eliminated.
High quality and reliable industrial luminaires should provide ultimate durability and record stability because they will in continuous mode, as well as provide high luminous characteristics, and give the opportunity of saving on illumination because of low energy consumption. And last, but not least, the luminaires are able to operate almost without maintenance thanks to high protection from dust and humidity. The calculated duration of their continuous operation is not less than 50 thousand hours, which is more than 12 years. AtomSvet has implemented a project on advanced illumination of underground objects of Mosmetrostroy OJSC.
Work on this project began in November 2012. Mosmetrostroy faced a serious problem with illumination of the construction site of the main line tunnel because of high humidity. All conventional light sources failed after a while. For that reason a high-grade substitute had to be found. The key factor for choosing new luminaires became the reliability of the equipment and its failure-free operation under conditions of high humidity.
Four low voltage series 22 W luminaires were offered for trial. After four months of tests, and based on the results obtained, startup of the pilot project began: more than four hundred low voltage LED luminaires were supplied to SMU-1 Mosmetrostroy.
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