Cableizer ®

Equivalent mutual impedance between earth continuity conductor and any cable

Definition according to CIGRE TB 531 chap. 4.2.3.9

Symbol
$Z_{mt}$
Unit
$\Omega$/m
Formulas
$R_{E}+j \omega \frac{\mu_{0}}{2\pi} \ln\left(\frac{D_{E}}{GMD_{t}}\right)$
Related
$D_{E}$
Equivalent depth of earth return path [m]
$GMD_{t}$
Geometric mean distance between earth continuity conductor and the cables of the same system [m]
$\mu_{0}$
Vacuum permeability [H/m]
$\omega$
Angular frequency [rad/s]
$\pi$
Archimedes' constant $\pi$
$R_{E}$
Equivalent resistance of earth return path [$\Omega$/m]
Used in
$Z_{h}$
Zero-sequence impedance [$\Omega$/m]