EN 60332-3-23-2009 着火条件下电缆和光缆的试验.第3-23部分:垂直束状电线或电缆垂直火焰蔓延的试验.类别B[替代:CENELEC EN 50266-2-3]
Tests on electric and optical fibre cables under fire conditions - Part 3-23: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category B