DIN EN 50085-2-4-2010 电气设备用电缆中继系统和电缆管道系统.第2-4部分:工作电极和工作接头用特殊要求
Cable trunking systems and cable ducting systems for electrical installations - Part 2-4: Particular requirements for service poles and service posts; German version EN 50085-2-4:2009
This European Standard specifies requirements and tests for cable trunking systems (CTS) and cable ducting systems (CDS) intended for the accommodation, and where necessary for the electrically protective separation, of insulated conductors, cables and possibly other electrical equipment in electrical and/or communication systems installations. The maximum voltage of these installations is 1000 V a.c. and 1500 V d.c.