本指南和IEEE Std 143-1954[8]1后续修订版的目的是介绍中性点接地参数选择的一些基本考虑因素，这些参数将用于控制三相电力公用事业系统所有部分的接地故障电流和过电压。 特别注意电力设施系统的五个离散区域，它们在第二部分至第二部分中被细分 在公用事业系统的这五个方面，有一些共同的考虑因素，但也有一些独特的考虑因素，导致使用了不同的接地方式。 接地问题没有一个简单的答案。一个接地问题的许多解决方案中的每一个都至少有一个突出的特性，但这些特性是在牺牲其他同样有价值的特性的情况下获得的（见ANSI/IEEE Std 142）- 1982年[7]、[8]和[10]）。 第二部分至第五部分将讨论系统五个方面的各种解决方案。 本指南的这一部分（第一部分）提供了适用于所有类型系统的一般注意事项和定义

The purpose of this guide and subsequent revisions to IEEE Std 143-1954 [8]1 is to present some basic considerations for the selection of neutral grounding parameters that will provide for the control of ground-fault current and overvoltage on all portions of three-phase electric utility systems. Particular attention is given to five discrete areas of the electric utility system and they are subdivided in Parts II through V.2 In these five areas of the utility system, there are certain common considerations, but also there are unique ones that have led to the utilization of different ways of grounding. There is no one simple answer to the problem of grounding. Each of a number of solutions to a grounding problem has at least one feature that is outstanding, but which is obtained at some sacrifice of other features that may be equally worthy (see ANSI/IEEE Std 142-1982 [7], [8] and [10]). Various solutions will be discussed in Part II, through Part V for each of the five areas of the system. This part of the guide (Part I), provides considerations and definitions that are general to all types of systems