Cableizer
Log in

Mutual impedance of armour

Definition according to Cigré guide 531 chapter 4.2.1

Symbol
$\mathscr{z}_{pmut}$
Unit
$\Omega$/m
Formulae
$\frac{m_{z,ar} \rho_{ar}}{\pi \left(r_{z4}+r_{z5}\right)} \frac{1}{sinh\left(m_{z,ar} \left(r_{z5}-r_{z4}\right)\right)}$
Related
$m_{z,ar}$
Parameter m of armour
$\pi$
Archimedes' constant $\pi$
$r_{z4}$
Radius of armour (inner) [m]
$r_{z5}$
Radius of armour (outer) [m]
$\rho_{ar}$
Specific electrical resistivity of armour material [$\Omega$.m]