# Zero sequence resistance

The zero sequence resistance is the real part of the zero sequence impedance and equal to positive resistance.

Symbol
$R_{0}$
Unit
$\Omega$/m
Formulae
 $R_{co} \left(y_{s} + 1\right) + R_{so}$ cable without armour $\frac{3 R_{A_{1}} R_{so}}{3 R_{A_{1}} + R_{so}} + R_{co} \left(y_{s} + 1\right)$ cable with armour
Related
$R_{A_{1}}$
Used in
$Z_{0}$