Vibration resistant overhead electrical cable
AssigneeNexans Canada Inc.
InventorWalter W. Young
Life of this patent
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Abstract
A vibration resistant overhead electrical cable is provided, such as a high-voltage transmission line, which has an insulated conductor, the insulation of which has an axially continuously rotating oval or elliptical outer periphery such that the aerodynamic forces acting on the cable act in a continuously changing direction, thereby reducing the tendency of the cable to vibrate. The ratio of the major to minor axis of the oval or elliptical shape is preferably between 1.1 and 1.2 and the length between axial rotations along the longitudinal axis of the cable is usually between about 2.5 and 3.5 meters.
Claims11
A vibration resistant overhead electrical cable suitable for use as a high voltage transmission line with low electromagnetic field, which comprises a conductor having insulation thereon to reduce the electromagnetic field of the cable, the insulation has an axially continuously rotating oval or elliptical outer periphery which provides an outer periphery of the cable such that the aerodynamic forces acting on the outer periphery of the cable act in a continuously changing direction, thereby reducing the tendency of the cable to undergo aeolian and galloping vibrations.
Dependencies are inferred from the claim text.