| 摘要 |
<p>PURPOSE: To provide a power cable line provided with a solid insulation power cable in which an airtight or liquid-tight fluid path provided in the solid insulation power cable is contained within the twisted outer diameter of power cable cores, and clearance can be secured to a conduit line to be laid allowing no contact of the fluid path with the inner face of the conduit line. CONSTITUTION: One part of a power cable line equipped with non-airtight or non-liquid-tight fluid path 2 extendedly disposed in the longitudinal direction of a laid conduit line is replaced with a solid insulation power cable of three twisted cores equipped with an airtight or liquid-tight fluid path extendedly disposed in a longitudinal direction. In this case, the structure of the solid insulation power cable is such that the power core outer diameter D, the fluid path outer diameter (d), and the conduit line inner diameter A of the solid insulation power cable meet the following relation. A/2-[d/2+√D/2+d/2)<2> -D/2)<2> }+√A /2-D/2)<2> -(D/2)<2> }]>0.</p> |
