Abstract: A louvered panel assembly restricts the ingress of contaminants into an enclosure. The louvered panel assembly includes a first louvered panel, a second louvered panel, and a third louvered panel. The first louvered panel has a first plurality of louvers extending arcuately, downwardly, and outwardly from a first plate. The second louvered panel is coupled to the first louvered panel and has a second plurality of louvers extending arcuately, downwardly, and inwardly away from a second plate that is spaced apart from the first plate. The third louvered panel is coupled to the second louvered panel and has a third plurality of louvers extending arcuately, upwardly, and inwardly away from a third plate that is spaced apart from and extends approximately parallel to the second plate.

Abstract: A louvered panel assembly restricts the ingress of contaminants into an enclosure. The louvered panel assembly includes a first louvered panel, a second louvered panel, and a third louvered panel. The first louvered panel has a first plurality of louvers extending arcuately, downwardly, and outwardly from a first plate. The second louvered panel is coupled to the first louvered panel and has a second plurality of louvers extending arcuately, downwardly, and inwardly away from a second plate that is spaced apart from the first plate. The third louvered panel is coupled to the second louvered panel and has a third plurality of louvers extending arcuately, upwardly, and inwardly away from a third plate that is spaced apart from and extends approximately parallel to the second plate.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A transformer which includes a primary winding having a plurality of primary winding taps, and a secondary winding having a plurality of secondary winding taps. A core is included on which the primary winding and the secondary winding are mounted. The primary winding and the secondary winding are electromagnetically coupled through the core. At least one terminal block is provided where each terminal block is connected to the primary winding taps or the plurality of secondary winding taps. Each terminal block includes at least a first row of terminals and a second row of terminals, and at least some of the first row of terminals are each connected to a corresponding one of the winding taps.

Abstract: A transformer which includes a primary winding having a plurality of primary winding taps, and a secondary winding having a plurality of secondary winding taps. A core is included on which the primary winding and the secondary winding are mounted. The primary winding and the secondary winding are electromagnetically coupled through the core. At least one terminal block is provided where each terminal block is connected to the primary winding taps or the plurality of secondary winding taps. Each terminal block includes at least a first row of terminals and a second row of terminals, and at least some of the first row of terminals are each connected to a corresponding one of the winding taps.