Space Dampers for Four-Conductors Bundles
AssigneeA. Salvi & C. S.p.A.
InventorAldo Tufari
Life of this patent
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Abstract
A space damper for 4-cable bundles of overhead power transmission lines is disclosed, comprising a framework (10) where—from four support arms (20a-20b) depart, at the distal ends of which there are provided clamps for fastening electric cables, said arms (20a-20c) being constrained to the framework (10) through respective dampening hinges (30a-30c), wherein the spacer damper is configured so that the vertical, natural-mode frequencies thereof are higher than the corresponding horizontal, natural-mode frequencies thereof.
Claims4
Spacer damper for 4-cable bundles of overhead power transmission lines, comprising an integral framework (10) wherefrom four support arms (20a-20b) depart, the distal ends of which there are provided clamps for fastening electric cables, said arms (20a-20c) being constrained to said integral framework (10) through respective dampening hinges (30a-30c);
- wherein
- said spacer damper is configured not symmetrical, said cables being nevertheless kept at the four vertexes an ideal rectangular quadrilateral with horizontal and vertical sides;
- and said hinges (30a-30b) are at the four vertexes of a quadrilateral having at least one side inclined with respect to a horizontal line;
- so that the vertical, natural-mode frequencies of the spacer damper are higher than the corresponding horizontal, natural-mode frequencies thereof.
Dependencies are inferred from the claim text.