Historical
IEEE Std 421.4-2004
IEEE Guide for the Preparation of Excitation System Specifications
This guide is intended to provide to the specification writer the information to prepare a specification for the purchase of an excitation system. This guide is presented in narrative form with descriptions of functions typical of excitation systems. Narrative is provided describing types of excitation systems and information required for sizing the excitation system.
Institute of Electrical and Electronics Engineers [ieee]