DIN EN 60332-3-21-2010 着火情况下的电气和光缆试验.第3-21部分:垂直安装的成束电线或电缆的垂直火焰蔓延的试验.A类F/R(IEC 60332-3-21:2000,修订本).德文版本EN 60332-3-21-2009
Tests on electric and optical fibre cables under fire conditions - Part 3-21: Test for vertical flame spread of vertically-mounted bunched wires or cables - Category A F/R (IEC 60332-3-21:2000, modified); German version EN 60332-3-21:2009