EN 60439-3-1991 低压开关设备和控制设备.第3部分:对非专业人员可进入场地的低压成套开关设备和控制设备.配电板的特殊要求
Low-Voltage Switchgear and Controlgear Assemblies - Part 3: Particular Requirements for Low-Voltage Switchgear and Controlgear Assemblies Intended to be Installed in Places Where Unskilled Persons Have Access for Their Use - Distribution Boards Includes