DIN EN 50289-4-12-2005 通信电缆.试验方法规范.第4-12部分:环境试验方法.小型束状电缆上的垂直火焰扩散试验
Communication cables - Specifications for test methods - Part 4-12: Environmental test methods - Vertical flame spread test on bunched small communication cables; German version EN 50289-4-12:2004
This part concerns small communication cables with a diameter equal or less than 14 mm, mounted on a test scale in bundles in order to obtain a total normal volume of non-metallic material equal to 0,51/m of test sample.