Title :
Effect of Impulse Testing on Transformer Iron Loss [includes discussion]
Author :
McWhirter, J.H. ; Specht, T.R. ; Albright, W.D.
Author_Institution :
MEMBER AIEE, Westinghouse Electric Corporation, Sharon, Pa.
Abstract :
The phenomenon of an increase in transformer iron loss due to the impulse testing of the windings is reported. This increase is caused by the breakdown of the interlaminar insulation on the punchings due to the voltages induced from the windings. The interaction of voltages induced electromagnetically and electrostatically is largely involved. Several methods have been devised to reduce this effect.
Keywords :
Circuit faults; Coatings; Core loss; Eddy currents; Impulse testing; Iron; Lamination; Magnetic cores; Power transformer insulation; Transformer cores;
Journal_Title :
Power Apparatus and Systems, Part III. Transactions of the American Institute of Electrical Engineers
DOI :
10.1109/AIEEPAS.1956.4499433
