Superseded Standard

IEEE 421.4-1990

IEEE Guide for the Preparation of Excitation System Specifications

Replaced by 421.1-2004 (SH/SS95244) Abstract: IEEE Std 421.4-1990, IEEE Guide for the Preparation of Excitation System specifications, is intended to be a narrative description of items and functions that should be considered in the preparation of excitation system specifications. This guide applies to excitation systems for synchronous machines rated at 5000 kVA or larger.

Sponsor Committee
PE/EDPG - Energy Development & Power Generation
Learn More About PE/EDPG - Energy Development & Power Generation
Status
Superseded Standard
Superseded by
421.4-2004
Board Approval
1990-05-31
History
ANSI Approved:
1990-10-12
Published:
1990-09-28

Working Group Details

Society
IEEE Power and Energy Society
Learn More About IEEE Power and Energy Society
Sponsor Committee
PE/EDPG - Energy Development & Power Generation
Learn More About PE/EDPG - Energy Development & Power Generation

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.


No Active Standards

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


No Superseded Standards

These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.


No Inactive-Withdrawn Standards

These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.


No Inactive-Reserved Standards
Subscribe to our Newsletter

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.