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Radius of armour (outer)

Definition according to Cigré guide 531 chapter 4.2.1

Symbol
$r_{z5}$
Unit
m
Formulae
$\frac{\frac{D_{ar}}{2}}{1000}$
Related
$D_{ar}$
External diameter of armour [mm]
Used in
$\mathscr{z}_{56}$
Impedance of jacket [$\Omega$/m]
$\mathscr{z}_{pin}$
Impedance of armour inner surface [$\Omega$/m]
$\mathscr{z}_{pmut}$
Mutual impedance of armour [$\Omega$/m]
$\mathscr{z}_{pout}$
Impedance of armour outer surface [$\Omega$/m]