Impedance of outersheath jacket

Definition according to Cigré guide 531 chapter 4.2.1, parameter $z_{os}$.

Symbol
$z_{os}$
Unit
$\Omega$/m
Formulae
$\frac{\omega \mu_0}{2\pi} \ln\left(\frac{r_{e8}}{r_{e7}}\right)$
Used in
$z_{ss}$