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

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

1987-04-06

1988-06-07

Nimmo, Morris H.

Electricity: conductors and insulators

Conduits, cables or conductors

Conductive armor or sheath

138122, 138173, 174102D, 174106R, 174106D, 174109, H01B 718

Patent

active

047498234

ABSTRACT:
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.

REFERENCES:
patent: 1275279 (1918-08-01), Lutz
patent: 1314333 (1919-08-01), Kahn
patent: 1826666 (1931-10-01), Lawrence
patent: 2164168 (1939-06-01), Wertzheiser et al.
patent: 2259850 (1941-10-01), Zundorf
patent: 2531917 (1950-11-01), Mollerhoj et al.
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patent: 3582536 (1971-06-01), Miller
patent: 3831636 (1974-08-01), Bittner
patent: 4282398 (1981-08-01), Solomon
patent: 4449013 (1984-05-01), Garschick
patent: 4453036 (1984-06-01), Neuroth

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