Title :
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
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;
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
DOI :
10.1109/PAPCON.1995.404839
