本推荐规程可作为同步电机磁场放电电路规范和设计的基本参考。它还提供了有关励磁系统规范编制IEEE 421.4（TM）-2004指南补充的现场放电设备的详细信息。本文件包括撤销标准ANSI/IEEE C37的许多方面。18-1979 IEEE标准封闭式磁场放电断路器

This recommended practice serves as basic reference for the specification and design of field discharge circuits for synchronous machines. It also provides detailed information about field discharge equipment complementing the IEEE 421.4(TM)-2004 Guide for Preparation of Excitation System Specification. This document includes many aspects of the withdrawn standard ANSI/IEEE C37.18-1979 IEEE Standard Enclosed Field Discharge Circuit Breakers