Fire test methods Fire test methods for electrical wires and cables Designation Flame temperature Test duration Conditions MIL-W-22759 and MIL-W-81044 VG 95218-2 procedure 4 min. 950 °C 30 s The specimen shall not continue to burn for more than 30 s, and damage by fire shall not exceed 76 mm. Dripping material shall not ignite the tensioned tissue paper (S). VG 95218-2 procedure 3 Determined by the prescribed adjustment of the flame. cable dia D ≤ 25 mm: 60 s cable dia 25 < D ≤ 50 mm: 120 s The specimen shall not continue to burn for more than 30 s, and damage by fire shall not exceed 76 mm. Dripping material shall not ignite the tensioned tissue paper (S). 180 55 250 25 75 G 60° 30° S 200 600 100 45° 45° S 13 250 13 Designation Flame temperature Test duration Conditions UL 1581 section 1090 Horizontal specimen AWM flame test Determined by the prescribed adjustment of the flame. 30 s The rate of the flame propagation shall not exceed 25 mm/min. Dripping material shall not ignite the cotton wool underneath (B). UL 1581 section 1061 UL 1581 section 1080 (VW1) Determined by the prescribed adjustment of the flame. sect.1061: 60 s flaming, 30 s pause (3 ×) sect.1080: 15 s flaming, 15 s pause (5 ×) The paper shall not be burned more than 25 %, and the specimen shall not continue to burn for more than 60 s. Dripping material shall not ignite the cotton wool underneath (B). paper 10 x 20 125 Technical information 455 230 – 240 250 40 50 17 230 – 240 50 – 75 20° B B HUBER+SUHNER Wires and cables 87
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