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Inner diameter steel pipe

Inner diameter of steel pipe of pipe-type cables.

Symbol
$Di_{sp}$
Unit
mm
Used in
$A_{sp}$
Cross-sectional area steel pipe [mm$^2$]
$Do_{sp}$
Outer diameter steel pipe [mm]
$\lambda_3$
Loss factor steel pipe pipe-type cable
$r_{sp}$
Mean radius steel pipe [mm]
$S_{sp}$
Mean distance between the phases, pipe-type cables [$\Omega$/m]