Temperature and loading considerations for cast coil transformers-a user´s perspective

Author

Holmquist, John R. ; Rooks, James A.

Author_Institution

Weyerhaeuser Co., Tacoma, WA, USA

fYear

1995

fDate

12-16 June 1995

Firstpage

142

Lastpage

147

Abstract

This paper reviews operating temperatures within windings of cast coil small power distribution transformers. The paper considers how temperature instrumentation can be used to monitor winding temperature, to activate fans to provide higher loading (within rated temperature rise), to notify operations at selected temperature values, and to even reduce I/sup 2/R losses. The paper sets a criterion for loading small power distribution transformers to assure that insulation system life is not a limiting factor when seeking 40 to 45 year service in a continuous process industry (such as pulp and paper mills).<>

Keywords

coils; monitoring; paper industry; power transformers; temperature measurement; transformer windings; I/sup 2/R losses reduction; cast coil transformers; fan activation; insulation system life; loading considerations; operating temperatures; paper mills; power distribution transformers; pulp mills; temperature considerations; temperature instrumentation; user´s perspective; winding temperature monitoring; windings; Coils; Electrical equipment industry; Fans; Instruments; Power transformer insulation; Power transformers; Pulp and paper industry; Temperature distribution; Temperature measurement; Temperature sensors;

fLanguage

English

Publisher

ieee

Conference_Titel

Pulp and Paper Industry Technical Conference, 1995., Conference Record of 1995 Annual

Conference_Location

Vancouver, BC, Canada

Print_ISBN

0-7803-2418-8

Type

conf

DOI

10.1109/PAPCON.1995.404839

Filename

404839