Multi-layer power cable with metal sheath free to move relative

Details Multi-layer power cable with metal sheath free to move relative Multi-layer power cable with metal sheath free to move relative

1992-08-25

1994-01-25

Nimmo, Morris H.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174102SC, 174106SC, 174107, 174120SC, H01B 728

Patent

active

052817571

ABSTRACT:
An electrical power cable with a stranded conductor, a semi-conductive stress control layer around the conductor, a layer of insulation around the stress control layer, a semi-conductive insulation shield layer around the layer of insulation, an imperforate metal strip with overlapping edge portions around the shield layer and a polymeric jacket around the metal strip. The strip is free to move with respect to the jacket and the shield layer with expansion and contraction of the cable elements with temperature changes, and the overlapping edge portions of the strip are bonded together by an adhesive which permits the edge portions to move relative to each other with such temperature changes without creating fluid passageways between the edge portions. A cushioning layer can be between the shield layer and the strip and preferably, the cable is water sealed.

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patent: 5043538 (1991-08-01), Hughey, Jr. et al.

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