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US 2020/0051731 A1Published application
Transformer iron core
AssigneeJfe Steel Corporation
InventorsSeiji OKABE, Takeshi OMURA, Hirotaka INOUE
Life of this patent
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Abstract
Iron core vibration and transformer noise can be reduced by using, as a transformer iron core, an iron core formed by a stack of at least two types of grain-oriented electrical steel sheets that differ in magnetostriction by 2×10−7 or more when excited from 0 T to 1.7 T.
Claims1
A transformer iron core formed by a stack of at least two types of grain-oriented electrical steel sheets that differ in magnetostriction by 2×10−7 or more when excited from 0 T to 1.7 T.
Dependencies are inferred from the claim text.