Low-voltage switchgear and controlgear assemblies - Part 2: Particular requirements for busbar trunking systems (busways) (IEC 60439-2:2000 + A1:2005); German version EN 60439-2:2000 + A1:2005
低压开关设备和控制设备组件.第2部分:母线槽系统(母线槽)的特殊要求(IEC 60439-2-2000+A1-2005);德文版EN 60439-2:2000+A1:2005