Impedance of insulation between screen and sheath

Definition according to Cigré guide 531 chapter 4.2.1, analogue to insulation.

Symbol
$z_{sc,sh}$
Unit
$\Omega$/m
Formulae
$\frac{\omega \mu_0}{2\pi} \ln\left(\frac{r_{e4}}{r_{e3}}\right)$
Used in
$z_{e4}$