EN 60332-3-21:2009
着火条件下的电缆和光缆测试 第 3-21 部分:垂直安装的成束电线或电缆的垂直火焰传播测试 AF/R 类(保持电流)
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 (Remains Current)