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Concentrated Solar Power, Getting to the heart of energy - LEONI

Concentrated Solar Power, Getting to the heart of energy - LEONI

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94 Technical Informationwww.leoni-communication-infrastructure.comNo flame propagationNo flame propagating cables are those cables which can beignited by a flame source, however <strong>the</strong>y do not allow <strong>the</strong> fire <strong>to</strong>spread even if <strong>the</strong> cable bundle is placed vertically; <strong>the</strong>y are selfextinguishing once <strong>the</strong> fire source is removed.Test proceduresThis test simulates <strong>the</strong> chimney effect in vertical cableinstallations. In a standardized cabinet <strong>the</strong> cable bundle is keptin a burner fire for 20 – 40 minutes (gas burner 75 ± 5 MJ/h).Thereby <strong>the</strong> temperature is kept constant <strong>to</strong> 750 °C. Dependingon <strong>the</strong> volume <strong>of</strong> <strong>the</strong> non-metal (combustible) materials perrunning meter it can be differentiated in <strong>the</strong> categoriesA F/R, A, B, C und D as follows.Category A F/R A B C DLiter (dm³) <strong>of</strong> insulation 7 7 3.5 1.5 0.5material per 1 m sampleAflame time (min) 40 40 40 20 20The cables must self-extinguish after removing <strong>the</strong> fire source.The fire may not have propagated any fur<strong>the</strong>r than 2,5 m from<strong>the</strong> burner. With <strong>the</strong> cables <strong>of</strong> <strong>LEONI</strong> Studer AG this should reachno fur<strong>the</strong>r than 50 <strong>to</strong> 60 cm.Test standardsCategory IEC EN VDE 0482A F/R 60332-3-21 60332-3-21 part 266-2-1A 60332-3-22 60332-3-22 part 266-2-2B 60332-3-23 60332-3-23 part 266-2-3C 60332-3-24 60332-3-24 part 266-2-4D 60332-3-25 60332-3-25 part 266-2-5Apparatus 60332-3-10 60332-3-10 part 266-1751005003500Air

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