施工现场临时用电接地系统分析  

Analysis on the Earthing Systems of Temporary Electrification on Construction Site

作　　者：陈谦 王乐全 CHEN Qian;WANG Lequan(Shandong Yijiang Architecture Design Co.,Ltd.,Ji’nan 250022,China)

机构地区：[1]山东意匠建筑设计有限公司,济南市250022

出　　处：《建筑电气》2021年第5期19-24,共6页Building Electricity

摘　　要：从接地系统的演变出发,重点讨论TT系统的特点和应用场所。从电气安全的角度,认为施工现场应选择TT系统,对目前相关规范中接地系统要求展开讨论,达到提高施工现场用电安全的目的。Starting from the evolution of earthing systems,the characteristics and application sites of TT system are mainly discussed.From the perspective of electrical safety,it is considered that TT system should be selected on the construction site,and the requirements for earthing systems in current relevant codes are discussed,so as to achieve the purpose of improving the electrification safety on the construction site.

关 键 词：TT系统 TN系统 施工现场 接地故障 接地电阻 保护接地导体 剩余电流动作保护器 等电位联结 

分 类 号：TU852[建筑科学]