Transfer switch assembly
First Claim
Patent Images
1. A system, comprising:
- an interface to an external power source;
a variable speed generator power source; and
a power transfer switch unit operatively coupled to the interface, the generator power source, and an output power bus, the power transfer switch unit being structured to switch between the external power source and the generator power source to transfer electric power to the output power bus, the power transfer switch unit including;
a contactor defining a number of landings between a first end portion and a second end portion, the landings each being separated from one another by a corresponding one of a number of dividing walls;
a printed circuit board carrying a number of power electronic devices, the printed circuit board including a first side opposite a second side and defining an opening therethrough, the opening being bordered by several tabs each separated from one another by a corresponding one of several notches, the tabs each including an edge clad with a metallic layer, the contactor being received through the opening to place each respective one of the dividing walls through a respective one of the notches, each respective one of the tabs being fastened to a respective one of the landings; and
an enclosure including a first enclosure wall opposite a second enclosure wall, the contactor and the printed circuit board being contained in the enclosure and at least one of the first end portion and the second end portion engaging the enclosure to position the printed circuit board between the first enclosure wall and the second enclosure wall.
1 Assignment
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Accused Products
Abstract
A transfer switch assembly is disclosed that includes a power switch device with a number engagement landings and a printed circuit board defining an opening bordered by a number of tabs. The tabs engage the landings as the switch device extends through the openings, and can be fastened together.
68 Citations
22 Claims
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1. A system, comprising:
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an interface to an external power source; a variable speed generator power source; and a power transfer switch unit operatively coupled to the interface, the generator power source, and an output power bus, the power transfer switch unit being structured to switch between the external power source and the generator power source to transfer electric power to the output power bus, the power transfer switch unit including; a contactor defining a number of landings between a first end portion and a second end portion, the landings each being separated from one another by a corresponding one of a number of dividing walls; a printed circuit board carrying a number of power electronic devices, the printed circuit board including a first side opposite a second side and defining an opening therethrough, the opening being bordered by several tabs each separated from one another by a corresponding one of several notches, the tabs each including an edge clad with a metallic layer, the contactor being received through the opening to place each respective one of the dividing walls through a respective one of the notches, each respective one of the tabs being fastened to a respective one of the landings; and an enclosure including a first enclosure wall opposite a second enclosure wall, the contactor and the printed circuit board being contained in the enclosure and at least one of the first end portion and the second end portion engaging the enclosure to position the printed circuit board between the first enclosure wall and the second enclosure wall. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus, comprising a power transfer switch unit including:
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an electric power switching device defining a number of engagement landings between a first end portion and a second end portion; a printed circuit board assembly including a printed circuit board carrying a number of power electronic devices, the printed circuit board including a first side opposite a second side and defining an opening bordered by a number of engagement fingers, the electric power switching device being connected to the printed circuit board to extend through the opening and to engage each of the fingers with a different one of the landings, the first end portion of the electric power switching device being positioned to extend past the first side of the printed circuit board and the second end portion of the electric power switching device being positioned to extend past the second side of the printed circuit board; and an enclosure containing the electric power switching device and the printed circuit board assembly therein, the enclosure including a first wall opposite a second wall, at least one of the first end portion and the second end portion bearing against the enclosure to support the printed circuit assembly between the first wall and the second wall. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. An apparatus, comprising an electric power transfer switch unit including:
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a power switching device defining a number of fastening landings each separated from one another by a corresponding one of a number of dividing walls; a printed circuit board assembly including a printed circuit board carrying a number of electrical power devices, the printed circuit board defining an opening therethrough, the opening being bordered by a number of fastening fingers each separated from one another by a corresponding one of a number of notches, the fingers each including an edge clad with a metallic layer to provide thermal and electrical conductivity, the power switching device being received through the opening to engage each respective one of the fingers with a respective one of the landings and receive a respective one of the dividing walls through a respective one of the notches; and a number of fasteners each connecting the respective one of the fingers to the respective one of the landings. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification