摘要
根据对桥架相关规范的分析,确定在TN-S系统中金属低压电缆桥架是外露可导电部分。在工程上,桥架的接地配置要按外露可导电部分采取措施,对桥架发生的接地故障,要采取合适的排查或消除故障的方法。
According to the analysis of relevant specifications for cable tray,it is determined that the metal low‑voltage cable tray in TN-S system is an exposed conductive part.In engineering,measures shall be taken for the earthing arrangement of the cable tray according to the specifications of the exposed conductive parts.For the earth fault of the cable tray,appropriate troubleshooting or fault elimination methods shall be taken.
作者
李沛岩
王梦梦
吕许光
LI Peiyan;WANG Mengmeng;LV Xuguang(ARTS Group Co.,Ltd.,Beijing 100044,China;China Architecture Design&Research Group,Beijing 100044,China)
出处
《建筑电气》
2023年第5期61-66,共6页
Building Electricity
关键词
钢制电缆桥架
TN-S系统
外露可导电部分
外界可导电部分
保护等电位联结
接地配置
保护接地导体
steel cable tray
TN-S system
exposed conductive part
extraneous conductive part
protective‑equipotential‑bonding
earthing arrangement
protective earthing conductor
