Toroidal current transformer assembly and method
First Claim
Patent Images
1. A current transformer assembly comprising:
- a toroidal core defining an aperture;
a conductor comprising a body portion extending through said aperture of said toroidal core and having at least one end portion of reduced thickness, said conductor further comprising at least one mounting portion positioned adjacent to said body portion, said mounting portion defining a recess and a counterbore or a countersink adjacent said recess positioned to receive said end portion of said body portion, and said end portion of said body portion having a head contacting a surface of said counterbore or said countersink for engagement of said mounting portion and said body portion;
said engagement of said mounting portion and said body portion providing mechanical engagement sufficient to prevent unintended separation of said body portion from said mounting portion, said engagement of said mounting portion and said body portion further providing electrical coupling to permit a flow of current between said body portion and said mounting portion.
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Accused Products
Abstract
A current transformer assembly comprises a toroidal core and a conductor having a body portion and a mounting portion. The conductor'"'"'s body portion extends through the aperture of the toroidal core. The mounting portion is positioned for a mechanical and electrical connection between an external conductor and the current transformer. A connection is made between the body portion and the mounting portion wherein mechanical engagement is sufficient to prevent unintended separation of the body portion from the mounting portion and electrical coupling is sufficient to permit the flow of current between the body portion and the mounting portion.
50 Citations
19 Claims
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1. A current transformer assembly comprising:
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a toroidal core defining an aperture; a conductor comprising a body portion extending through said aperture of said toroidal core and having at least one end portion of reduced thickness, said conductor further comprising at least one mounting portion positioned adjacent to said body portion, said mounting portion defining a recess and a counterbore or a countersink adjacent said recess positioned to receive said end portion of said body portion, and said end portion of said body portion having a head contacting a surface of said counterbore or said countersink for engagement of said mounting portion and said body portion; said engagement of said mounting portion and said body portion providing mechanical engagement sufficient to prevent unintended separation of said body portion from said mounting portion, said engagement of said mounting portion and said body portion further providing electrical coupling to permit a flow of current between said body portion and said mounting portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 19)
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10. A current transformer assembly comprising:
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a toroidal core defining an aperture; a conductor comprising a body portion extending through said aperture of said toroidal core and having opposed end portions of reduced thickness, said conductor further comprising a mounting portion positioned adjacent to one of said end portions of said body portion and a mounting portion adjacent to an opposite one of said end portions of said body portion, each of said mounting portions defining a recess and a counterbore or a countersink ii sharing an axis with said recess and positioned to receive one of said end portions of said body portion, each of said end portions having a head contacting a surface of one of said counterbores or said countersinks for engagement of said mounting portions and said body portion; said mounting portions of said conductor each being configured for mechanical and electrical connection between an external conductor and said body portion; said engagement of said mounting portions and said body portion providing mechanical engagement between said mounting portions and said body portion sufficient to prevent unintended separation of said body portion from said mounting portions; and said engagement of said mounting portions and said body portion also providing electrical coupling between said mounting portions and said body portion sufficient to permit a flow of current through said body portion and said mounting portions. - View Dependent Claims (11, 12, 13, 14)
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15. A method for assembling a current transformer having a toroidal core with an aperture, said method comprising the steps of:
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(a) providing a conductor body portion having at least one end portion of reduced thickness; (b) providing a conductor mounting portion defining a recess and a counterbore or a countersink adjacent said recess positioned to receive said end portion of said conductor body portion; (c) positioning said conductor body portion to extend through said aperture of said toroidal core, and positioning said end portion of said conductor body portion through said recess defined in said mounting portion; and (d) deforming said end portion of said conductor body portion into contact with a surface of said counterbore or said countersink thereby engaging said conductor mounting portion to provide a mechanical connection sufficient to prevent unintended separation of said conductor body portion from said conductor mounting portion and to provide an electrical connection sufficient to permit a flow of current between said conductor body portion and said conductor mounting portion. - View Dependent Claims (17)
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16. A method for assembling a current transformer having a toroidal core with an aperture, said method comprising the steps of:
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(a) forming from a conductive rod a conductor body portion having opposed end portions of reduced diameter; (b) forming from conductive sheet conductor mounting portions each defining a recess and a counterbore or a countersink sharing an axis with said recess; (c) positioning said conductor body portion to extend through said aperture of said toroidal core, and positioning each of said end portions of said conductor body portion to extend through said recess in one of said conductor mounting portions; (d) deforming each of said end portions of said conductor body portion to contact a surface of said counterbore or said countersink of one of said conductor mounting portions to engage said conductor mounting portions to provide a mechanical connection sufficient to prevent unintended separation of said conductor body portion from said conductor mounting portions and to provide an electrical connection sufficient to permit a flow of current between said conductor body portion and said conductor mounting portions. - View Dependent Claims (18)
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Specification