A uniform method by which the thermal endurance of electrical insulation systems for dry-type specialty and general-purpose transformers can be compared is established. These insulation systems are intended for use in the types of transformers described in NEMA ST 1-1988 and NEMA ST 20-1992.
- Standard Committee
- PE/TR - Transformers
- Status
- Superseded Standard
- Superseded by
- 259-1994
- Board Approval
- 1972-06-22
- History
-
- ANSI Approved:
- 1995-03-21
- Published:
- 1974-08-22
- Reaffirmed:
- 1980-12-18
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/TR - Transformers
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