单电源TN接地系统的做法探讨

摘要

As per the requirements for single power TN grounding system of GB/T 16895. 1-2008/ IEC 60364 - 1: 2005 Low-voltage Electrical Installations — Part 1: Fundamental Principles, Assessment of General Characteristics, Definitions and the actual conditions of low-voltage power distribution system in substation for civil building, single power grounding method in civil building engineering is proposed, safety issues and stray current prevention that should be noticed in TN grounding system are discussed and the selection for section of grounding flat steel around substation is discussed.%根据GB/T 16895.1-2008/IEC 60364-1：2005《低压电气装置第1部分：基本原则、一般特性评估和定义》对单电源TN 接地系统的要求，结合民用建筑用户变电所内低压配电系统的实际情况，提出民用建筑工程单电源接地的做法，阐述TN接地系统应注意的安全问题、杂散电流的防范，探讨变电所四周接地扁钢的截面选择。