Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 320, Issue 20, Pages E911-E914Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2008.04.090
Keywords
transformer core; insulation; measurement; eddy current loss
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A capacitive measurement procedure is proposed that serves to detect burr-induced short circuits in transformer core laminations. The tests are conducted on stacks of transformer steel sheets as used for transformer core production and yield a short-circuit probability indicative of the additional eddy current losses to be expected. Applied during the assembly of transformer cores, the measurements can help to decide whether the burr treatment process is working efficiently or has to be readjusted. (C) 2008 Elsevier B.V. All rights reserved.
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