对TN系统定义的理解

摘要

By comparing the definitions of TN system in different specifications, the differences between system grounding and protective grounding are analyzed, the concept of the overall system is illustrated, the understanding about TN system is proposed and literal definition of TN system is suggested.%通过比较不同规范中TN系统定义的不同，分析系统接地和保护接地的差异，阐述整个系统的概念，提出对TN 系统定义的认识和理解，并对TN系统定义的文字描述提出建议。