IEEE guide for loading mineral-oil-immersed overhead and pad-mounted distribution transformers rated 500 kVA and less with 65⁰C or 55⁰C average winding rise
By: sponsor, Transformers Committee of the IEEE Power Engineering Society.
Contributors: IEEE Power Engineering Society. Transformers Committee.
Series: IEEE Std --  C57.91-1981.
Publisher: IEEE
Published: 1981
Place of publication: New York
Language: eng
Number of pages: 32
Subjects: Electric transformers -- Standards
Other titles: Guide for loading mineral-oil-immersed overhead and pad-mounted distribution transformers ...
Notes: "ANSI/IEEE C57.91-1981."

At head of title: An American national standard.

Approved Nov. 19, 1980, ANSI.

Also available via the World Wide Web with additional title: ANSI/IEEE Std C57.91-1981.