Solid cable, manufacturing method thereof, and transmission line therewith

a technology of solid cable and manufacturing method, applied in the direction of power cables, insulated conductors, cables, etc., can solve the problems of reducing the electric performance conspicuously, the cable line is too long to feed or absorb insulating oil at both ends, and cannot be realized
US20010042635A1Inactive Publication Date: 2001-11-22SUMITOMO ELECTRIC IND LTD
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
SUMITOMO ELECTRIC IND LTD
Publication Date
2001-11-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

A solid cable provided with an insulation layer on the outer circumference of a conductor, and impregnated with insulating oil in this insulation layer. Medium-viscosity insulating oil the viscosity of which is between not less than 10 cst and less than 500 cst at 60° C. is used as the insulating oil.
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Description

[0001] 1. Field of the Invention

[0002] The present invention relates to a power cable which is optimum for long-distance and bulk power transmission, and particularly to a structure and a method of manufacturing for a power cable for DC submarine transmission and a submarine transmission line using such power cables.

[0003] 2. Description of the Related Art

[0004] Conventionally, a solid cable (Mass-Impregnated Cable or Non-Draining Cable) using kraft paper as insulating tape material and impregnated with high-viscosity insulating oil (for example, 25 to 100 cst at 120.degree. C., and 500 to 2,000 cst at the maximum service temperature of the cable (50 to 60.degree. C.)) has been used as a long-distance and bulk power DC cable.

[0005] To attain a solid cable of a larger capacity, it will do to make the solid cable withstand a higher voltage and allow a larger current. A large current solid cable can be realized if a conductor having a sectional area as large as possible is used or the ...

Claims

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