Cableizer ®

Radius sheath (inner)

Definition according to CIGRE TB 531 chap. 4.2.2.5 composite screen and sheath

Symbol
$r_{z2,sh}$
Unit
m
Formulas
$\left(\frac{d_{sh}}{2}-t_{sh}-\frac{H_{sh}+\Delta H}{2}\right) \frac{1}{1000}$
Related
$d_{sh}$
Mean diameter sheath [mm]
$\Delta H$
Correction depth of corrugation [mm]
$H_{sh}$
Depth of corrugation [mm]
$t_{sh}$
Thickness sheath [mm]
Used in
$\mathcal{Z}_{3,sh}$
Impedance sheath inner surface [$\Omega$/m]
$\mathcal{Z}_{4,sh}$
Mutual impedance sheath [$\Omega$/m]
$\mathcal{Z}_{5,sh}$
Impedance sheath outer surface [$\Omega$/m]
$\mathcal{Z}_6$
Impedance insulation screen—sheath [$\Omega$/m]