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

www.leoni-communication-infrastructure.comTechnical Information93Flame retardantFlame retardant cables are cables which, when installed as a singlecable, although ignitable on exposure to flame source, willgreatly reduce flame spread and self-extinguish once the flamesource is removed. However in a vertical cable bundle, e.g. invertical risers, fire can spread along the cables (chimney effect).In order to avoid this danger, the so called “non-flame propagating”cables should be used.Test proceduresThis test procedure describes the minimum requirements forflame retardant cables and it is valid for lead wires or on singlecables only. A lead wire or a cable is being aflamed with a propane-air-burner(1 kW flame).Test duration ≤ 25 25…50 50…75 > 75= 60 s= 120 s= 240 s= 480 sThe burning cable should self-extinguish as soon as the firesource has been removed. The fire damage may not be higherthan 60 cm.The test is considered to be passed if the sample has not burnedand the damage (carbonisation) has not reached any of the terminationsof the sample (> 50 mm).Test standardsIEC 60332-1, EN 60332-1, VDE 0482-332-1,BS 6387:1994 clause 10, BS EN 60332-1IEC 60332-1-2, EN 60265-2-1 UL 1581125P6001805550–752504554045°10020°230–240B