本指南旨在帮助保护工程师在各种发电机接地方案中应用继电器和继电保护方案，以防止定子接地故障。由于技术的快速发展，现有的指南已经过时。因此，修订后的指南包括新的定子接地保护原理，这些原理随着继电器设计中新技术的使用而发展。还包括其他应用程序示例，以及用户提出的其他问题。本指南不适用于发电机或接地连接方案的选择。 提出的建议适用于典型的发电机安装。然而，提供了与保护要求、应用和设置原理相关的充分背景信息，使读者能够评估在大多数情况下选择和应用合适保护的必要性。

The guide is intended to assist protection engineers in applying relays and relaying schemes for protection against stator ground faults on various generator grounding schemes. The existing guide is out-dated due to rapid technology development. Hence, the revised guide includes new stator-ground-protection principles that have evolved with the use of new technologies in relay designs. Additional application examples are included, and other issues raised by the users are also addressed. The guide is not intended for the selection of generator or ground connection schemes. The recommendations made pertain to typical generator installations. However, sufficient background information relating to protection requirements, applications, and setting philosophy is given to enable the reader to evaluate the need to select and apply suitable protection for most situations.