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US 4,571,453 AGranted
Conductor for an electrical power cable
AssigneeThe Fujikura Cable Works, Ltd.
InventorsMichio Takaoka, Tsuneaki Mohtai, Syotaroh Yoshida, Kazuo Watanabe
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AssigneeThe Fujikura Cable Works, Ltd.
InventorsMichio Takaoka, Tsuneaki Mohtai, Syotaroh Yoshida, Kazuo Watanabe
Estimating the term…
In a method for manufacturing a stranded conductor for an electrical power cable comprising a process for forming cupric oxide films of from 0.3 .mu.m to 3 .mu.m in thickness by passing an uninsulated stranded conductor constituted by a plurality of stranded copper strands through oxidizing liquid, the stranded conductor passing through the liquid is curved in a wave to form gaps between the strands, and the oxidizing liquid is caused to penetrate between the strands through the gaps to form cupric oxide films of from 0.3 .mu.m to 3 .mu.m in thickness on the surfaces of the strands. Also disclosed is a stranded conductor for an electrical power cable constituted by a plurality of stranded copper strands, at least one of the copper strands being covered with a cupric oxide film free from exfoliation.
A stranded conductor for an electrical power cable constituted by a plurality of stranded cooper strands, at least one of said strands being covered with a cupric oxide film having a thickness of from about 0.3 to about 3 .mu.m, free from exfoliation, and formed by oxidizing said one strand and forming an insulating film for electrically insulating said one strand from the other strands.
Dependencies are inferred from the claim text.