Cableizer
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Zero-sequence reactance steel pipe

Definition according to Cigre TB 531 chap. 4.2.4.3

Symbol
$X_{cp}$
Unit
$\Omega$/m
Formulas
$\omega \frac{\mu_0}{2\pi} \ln\left(\frac{{r_{sp}}^3}{GMR_{sp} {S_{sp}}^2}\right)$
Related
$GMR_{sp}$
Geometric mean radius steel pipe [m]
$\mu_0$
Vacuum permeability [H/m]
$\omega$
Angular frequency [rad/s]
$\pi$
Archimedes' constant $\pi$
$r_{sp}$
Mean radius steel pipe [mm]
$S_{sp}$
Mean distance between the phases, pipe-type cables [$\Omega$/m]
Used in
$Z_h$
Zero-sequence impedance [$\Omega$/m]