Superseded Standard

IEEE 638-1992

IEEE Standard for Qualification of Class 1E Transformers for Nuclear Power Generating Stations

Procedures for demonstrating the adequacy of new Class 1E transformers, located in a mild environment of a nuclear power generating station, to perform their required safety functions under postulated service conditions are presented. Single- and three-phase transformers rated 601 V to 15,000 V for the highest voltage winding and up to 2500 kVA (self-cooled rating) are covered. Because of the conservative approach used in the development of this standard for new transformers, the end-point criteria cannot be used for in-service transformers.

Sponsor Committee
PE/TR - Transformers
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Status
Superseded Standard
Superseded by
638-1994
Board Approval
1992-03-19
History
ANSI Approved:
1999-07-21
Published:
1992-06-22
Reaffirmed:
2006-03-30

Additional Resources

Erratas
638-1992_errata.pdf

Working Group Details

Society
IEEE Power and Energy Society
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Sponsor Committee
PE/TR - Transformers
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