这是继电保护系统和方案数字通信应用指南，包括发送和接收设备、数字通道、应用原理、性能、安装、故障排除、测试和维护。本指南反映了设备制造商和电力公司用户的知识和经验。本指南无意取代制造商RSA？中包含的特定或一般说明？书籍或任何合同协议。

This is a guide for the application of digital communication for protective relaying systems and schemes, including transmitting and receiving equipment, digital channels, application principals, performance, installation, troubleshooting, testing and maintenance. Reflected in this guide are the knowledge and experience of equipment manufacturers and power utility users. This guide is not intended to supplant specific or general instructions contained in manufacturers' books nor any contractual agreements.