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US 5,396,212 AGranted
Transformer winding
AssigneeCooper Industries, Inc.
InventorsAugusto D. Hernandez, Gary D. King, Craig J. De Rouen, Kenneth R. Beck
Life of this patent
Estimating the term…
Abstract
A transformer conductor is shaped so as to compensate for the deformation that occurs when the conductor is bent through a small radius of curvature. The shape in cross-section of the conductor may take the form of a chamfered rectangle.
Claims8
A method of compactly winding conductor about a core having a rectangular cross-section, comprising the steps of:
- providing a conductor with a cross-sectional shape having an first, rectangular portion and a second, trapezoidal portion contiguous with the first rectangular portion and being oriented so as to lie nearer the core than the first, rectangular portion;
- and
- bending the conductor about the right-angle edges of the core so that as the conductor is wound about the core, the trapezoidal portion of the conductor nearer the core expands laterally outwardly and the rectangular portion of the cross section of the conductor laterally contracts in the region of the core edges.
A winding, comprising:
- a generally rectangular core having four longitudinally extending edges;
- and
- a length of conductor, said conductor being wound about the core and having a compound cross-sectional shape in the portion of the winding that is between the edges of the core having a first, generally rectangular portion away from the core and a second, trapezoidally-shaped portion closer to the core.
Dependencies are inferred from the claim text.