辅助等电位联结设计探讨  

Discussion on Design of Supplementary Equipotential Bonding

作　　者：陈国顺 CHEN Guoshun(Fujian Academy of Building Research Co.,Ltd.,Fuzhou 350108,China)

机构地区：[1]福建省建筑科学研究院有限责任公司,福州市350108

出　　处：《建筑电气》2023年第12期61-66,共6页Building Electricity

摘　　要：通过TN接地系统的接地故障电流、接地故障电压、故障电压传导等分析,阐述间接接触防护自动切断电源的条件以及设置辅助等电位联结的必要性和有效性,得出辅助等电位联对接地故障电流大小影响,并强调设了辅助等电位联结后,还应校验间接接触保护电器的动作特征能否满足要求。By analyzing the earth fault current,earth fault voltage and fault voltage conduction of the TN grounding system,elaborating on the conditions of automatically power off by indirect contact protection as well as the necessity and effectiveness of setting up the supplementary equipotential bonding,it is concluded that the supplementary equipotential bonding has an effect on the earth fault current,and it is emphasized that after the supplementary equipotential bonding being set,it is necessary to check whether the action characteristics of the protective appliances in indirect contact can meet the requirements.

关 键 词：辅助等电位联结 接触电压 接地故障 自动切断电源 接地故障电流 故障电压传导 动作特征 最长切断时间 

分 类 号：TU852[建筑科学]