这些指南的目的是为选择中性点接地参数提供一些基本考虑，这些参数将控制三相电力公用系统所有部分的接地故障电流和过电压。它还提供了同步发电机系统接地的一般考虑因素，讨论了选择接地等级和接地方法应用时应考虑的因素，并总结了发电站辅助电力系统接地的一般考虑因素，在选择适当接地等级时应考虑的因素，以及指定设备等级。 讨论的术语配电包括向配电馈线供电的变电站、配电馈线和在使用电压下提供服务的配电变压器。它还提供了为特定交流输电或子输电系统选择中性点接地等级和方式时的基本因素和一般注意事项，以及用于实现所需接地的建议方法和设备。

The purpose of these guides are 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. It also provides general considerations in grounding synchronous generator systems and discusses the factors to be considered in the selection of a grounding class and the application of grounding methods and summarize the general considerations in grounding of generating station auxiliary power systems, the factors to be considered in selecting between the appropriate grounding classes, and specifying equipment ratings. Discussed are the term distribution includes the substation providing power to distribution feeders, the distribution feeders, and the distribution transformers providing service at utilization voltages. It also provides the basic factors and general considerations in selecting the class and means of neutral grounding for a particular ac transmission or subtransmission system, and the suggested method and apparatus to be used to achieve the desired grounding.