| 摘要 |
PROBLEM TO BE SOLVED: To provide a new pipe type rubber or plastic insulation power cable enabled to secure an excellent power transmission capacity. SOLUTION: The pipe type rubber or plastic insulation power cable 15, replacing an existing pipe type cable at the inside of a steel pipe 1, is formed by covering a conduction body 4 by a rubber or plastic insulation layer 17, and covering the above insulation layer 17 by a reinforcing layer 19 directly or interposing an outer semiconductive layer 18, and spirally winding a skid wire 20 on the reinforcing layer 19. By the above, as the diameter of the cable is made small as a whole without sacrificing the diameter of the conduction body 4, a plurality of cables are enabled to draw into the existing piping, and an excellent power transmission capacity is secured. |
