CABLES AND WIRES - Novkabel

Halogen free fire retardant cables with insulation function in fires are intended to power thedevices used even in fire conditions (electro-drivers of pumps of the devices used for theincrease of water pressure in the hydrant network and fire extinguishing devices, fans forsmoke extraction and creation of the overpressure, powering of the panic lighting etc.)The new generation of cables with halogen frees fire retardant materials is particularlyfamous for the following characteristics:- it does not spread the flame,- it has a low density of smoke,- it does not release corrosive gasses,With special constructional solutions- it maintains the powering of devices in cases of fire for at least 180 minutes.Cable labelingOften used labels or as parts of labels:HFFR (Halogen Free Flame Retardant) – halogen free, slow combustionHFFR (Halogen Free Fire Resistant) – halogen free, fire resistantLSOH (Low Smoke Zero Halogen) – low smoke density, halogen free-LS (Low Smoke) – low smoke density...нг (пониженная горючесть) – flame retardantFE180 (Fire Extinguish 180) – „extinguishing“ (conducts power) 180 minutes...HX... – cross-linked fire retardant material for insulation / sheath...H... – thermoplastic fire retardant material for insulation / sheathTestingTesting of flame spreadingCables are laid as a bundle, on vertical ladders.The testing conducted in accordance with – IEC 61332-3:There are 3 categories: A, B and C, depending on the amount ofnon-metal material within the cable. The estimation is conducted on1 m of a cable. The time of sample exposure to direct flame alsovaries.211CategoryAmount of non-metalmaterial in 1m of cableDuration of exposure toflameA 7 liters/m 40 minutesB 3,5 liters/m 40 minutesC 1,5 liters/m 20 minutesAfter the fire has been extinguished, the cables must be left to extinguish on their own; they can becombusted up to 2,5 m.The testing according to – DIN VDE 0472 deo 804 C methode: