Impedance shield outer surface

Definition according to CIGRE TB 531 chap. 4.2.1

Symbol
$\mathcal{Z}_5$
Unit
$\Omega$/m
Formulas
$\mathcal{Z}_{5,sc}$screen
$\mathcal{Z}_{5,sh}$sheath
$\mathcal{Z}_{5,sh}-\frac{{\mathcal{Z}_{4,sh}}^2}{\mathcal{Z}_{5,sc}+\mathcal{Z}_6+\mathcal{Z}_{3,sh}}$composite screen and sheath
Related
$\mathcal{Z}_{3,sh}$
$\mathcal{Z}_{4,sh}$
$\mathcal{Z}_{5,sc}$
$\mathcal{Z}_{5,sh}$
$\mathcal{Z}_6$
Used in
$\mathcal{Z}_{ss}$