Single phase dry-type transformer
First Claim
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1. A single phase dry-type transformer comprising;
- a. an iron core having a plurality of legs;
b. at least one cylindrical solid cast resin high voltage coil functioning as a primary winding and including termination means for connecting to a high voltage AC source;
c. a cylindrical resin encapsulated low voltage coil for each of said high voltage coils, said low voltage coil functioning as a secondary winding and including termination means for outputting a lower AC voltage, said low voltage coil encircled around one of said plurality of legs of said core; and
d. wherein for each of said low voltage coils, one of said high voltage coils is placed over and around said low voltage coil.
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Abstract
A single phase, dry type transformer has an iron core, high voltage windings embedded in cast resin, and low voltage windings resin encapsulated. The low voltage winding is constructed with flexible sheet conductors. Insulating material includes a means to secure the windings in place during a vacuum and pressure resin impregnation process. The result is a coil that exhibits high short circuit protection due to the tightly bond conductors comparable to completely resin encased molded transformers at a substantially reduced cost.
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Citations
15 Claims
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1. A single phase dry-type transformer comprising;
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a. an iron core having a plurality of legs; b. at least one cylindrical solid cast resin high voltage coil functioning as a primary winding and including termination means for connecting to a high voltage AC source; c. a cylindrical resin encapsulated low voltage coil for each of said high voltage coils, said low voltage coil functioning as a secondary winding and including termination means for outputting a lower AC voltage, said low voltage coil encircled around one of said plurality of legs of said core; and d. wherein for each of said low voltage coils, one of said high voltage coils is placed over and around said low voltage coil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification