Multi-wire electric power cable, particularly a supply cable...

Details Multi-wire electric power cable, particularly a supply cable... Multi-wire electric power cable, particularly a supply cable...

H - Electricity

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H01B 7/18 (2006.01) B21C 37/20 (2006.01) B21D 15/04 (2006.01) H01B 7/04 (2006.01) H01B 7/08 (2006.01)

Patent

CA 1241393

ABSTRACT OF THE DISCLOSURE In a multi-wire electric power cable, particularly a supply cable for borehole units such as pumps, each insulated wire is protected by a corrugated sheath. In order to be able to withstand high pressures of, for instance, 300 bar, the corrugation of the corrugated sheaths is so developed with respect to depth and pitch of corrugation that the length of each corrugated sheath is between 33 and 67%, and preferably 45 to 55%, shorter than the smooth tube from which it has been produced.

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