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Patent
Hammond Power Solutions Inc. | Date: 2013-10-21

A transformer comprises a core of magnetic permeable material. A first coil assembly extends around the core and includes a first coil of wire encased in a first body of electrical insulating material. The first body is annular with a first inner surface and a first outer surface with a first plurality of fins projecting from the first inner surface. A second coil assembly extends around the first coil assembly and includes a second coil encased in a second body of electrical insulating material. The second body is annular with a second inner surface and a second outer surface with a second plurality of fins projecting from the second outer surface. A third plurality of fins projects from either the first outer surface of the first body or the second inner surface of the second body.


Patent
Hammond Power Solutions Inc. | Date: 2013-10-21

A transformer has a core of magnetic permeable material. A first coil assembly extends around the core and includes an electrical conductive first coil embedded in a first body of electrically insulating material. A second coil assembly extends around the first coil assembly and includes an electrical conductive second coil embedded in a second body of electrically insulating material. A first shield of electrically conductive, non-magnetic material is between the first and second coil assemblies and is embedded in either the first body or the second body. Optionally a second shield of electrically conductive, magnetic material is embedded in the second body and extends around and outside the second coil.


Patent
Hammond Power Solutions Inc. | Date: 2013-11-01

A transformer includes a core of magnetic permeable material around which both a primary coil and a secondary coil extend. A sheets of electrical insulation are located between the layers of windings of the primary and secondary coils, between the primary and secondary coils, and between the core and the coils. The sheet is formed of material that is non-conductive to electricity, and has a first major surface and a second major surface opposing each other. A first plurality of ribs projects outward from the first major surface. Optionally a second plurality of ribs projects outward from the second major surface of the sheet. The force exerted on to the inter-layer or inter-winding electrical insulation sheets during the winding process are absorbed by deformation of one or more of the ribs thereby inhibiting that force from adversely affecting the electrical insulating property of the sheet.


Trademark
Hammond Power Solutions Inc. | Date: 2015-10-13

Electrical reactors; Electrical transformers.


Trademark
Hammond Power Solutions Inc. | Date: 2015-07-23

Electric transformers; Electrical reactors.

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