Fire test methods Fire test methods for electrical wires and cables Designation Flame temperature Test duration Conditions IEC 60331-21, IEC 60331-23 DIN VDE 0472-814 BS 6387, category C IEC, DIN VDE: min. 750 °C BS : 950 ± 40 °C IEC: DIN VDE, BS: 90 min. recommended 180 min. Zwischen den Adern wird eine Prüfspannung angelegt. IEC: power cable: Uo/U IEC, DIN VDE: data cable: 110 V DIN VDE: power cable: 230/400 V BS: all Uo/U The fuses shall not blow and the incandescent lamps shall not extinguish. BS 6387, category W 650 ± 40 °C 30 min. A test voltage is applied between the cores which equals the mains voltage Uo/U. After 15 min. exposure to the flame, the sprinkler is additionally switched on. The fuses shall not blow and the incandescent lamps shall not extinguish. R 3A S T 75 holder 1200 20 350 1500 Designation Flame temperature Test duration Conditions EN 50267-2-2 IEC 60754-2 min. 935 °C 30 min. The pH value of the washing water shall be min. 4.3, its conductivity shall not exceed 10 µS/mm. EN 50268-2 IEC 61034-2 Determined by the composition of the combustion liquid. 40 min. The light permeability of the resulting smoke shall be min. 60 %. test chamber 1000 height = 3000 mm oven synth. air gas washing bottles lamp recirculation air screening cable trouh with combustion liquid specimen 1 g photocell unit fan 3000 88 HUBER+SUHNER Wires and cables 3000
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