High voltage electric transmission cable
First Claim
Patent Images
1. An over head cable comprising:
- at least one composite strength member having one or more reinforcing elements at least partly embedded in an organic matrix;
a metal coating surrounding said at least one composite strength member, said metal coating welded directly to itself along its seams so as to be completely sealed tube all around the at least one composite strength member so that the sealed metal coating prevents thermal oxidation of the organic matrix of the at least one composite strength member along the cable; and
at least one conducting element surrounding said sealed metal coating, said conducting element having an assembly of metal wires;
wherein the electrical cable further comprises at least one electrically insulating layer positioned between the sealed metal coating and the composite strength member or members, andwherein the thickness of the sealed metal coating is between 150 and 3000 μ
m so as to be sufficient to protect said composite strength member from environmental degradation and also thin enough to remain flexible enough such that said cable can operate as said over head cable.
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Abstract
An electric cable (10) includes at least one composite reinforcement element (1) including one or more reinforcement element(s) at least partially embedded in an organic matrix. A coating (2) surrounds the composite reinforcing element(s) (1). The coating (2) is sealed all around the composite reinforcing element(s) (1). At least one conducting element (3) surrounds the coating (2), where the thickness of the sealed coating (2) does not exceed 3000 μm.
15 Citations
19 Claims
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1. An over head cable comprising:
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at least one composite strength member having one or more reinforcing elements at least partly embedded in an organic matrix; a metal coating surrounding said at least one composite strength member, said metal coating welded directly to itself along its seams so as to be completely sealed tube all around the at least one composite strength member so that the sealed metal coating prevents thermal oxidation of the organic matrix of the at least one composite strength member along the cable; and at least one conducting element surrounding said sealed metal coating, said conducting element having an assembly of metal wires; wherein the electrical cable further comprises at least one electrically insulating layer positioned between the sealed metal coating and the composite strength member or members, and wherein the thickness of the sealed metal coating is between 150 and 3000 μ
m so as to be sufficient to protect said composite strength member from environmental degradation and also thin enough to remain flexible enough such that said cable can operate as said over head cable. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An over head cable comprising:
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at least one composite strength member having one or more reinforcing elements at least partly embedded in an organic matrix; a metal coating surrounding said at least one composite strength member, said metal coating is a sealed tube welded along all of its seams directly to itself all around the at least one composite strength member so that the coating has no openings along its length; and at least one conducting element surrounding said coating, said conducting element having an assembly of metal wires; wherein the electrical cable further comprises at least one electrically insulating layer positioned between the sealed metal coating and the composite strength member or members, and wherein the thickness of the sealed coating is between 150-3000 μ
m so as to be sufficient to protect said composite strength member from environmental degradation and also thin enough to remain flexible enough such that said cable can operate as said over head cable. - View Dependent Claims (17, 18, 19)
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Specification