Cableizer
Log in

Electrical resistance of steel pipe

Symbol
$R_{sp}$
Unit
$\Omega$/m
Formulae
${10}^6\frac{\rho_{sp}}{A_{sp}}$at 20°C
$R_{sp} \left(1+\alpha_{sp} \left(\theta_{sp}-20\right)\right)$at operating temperature
${10}^6\frac{1.38{\cdot}{10}^{-7}}{A_{sp}}\left(1+\alpha_{sp} \left(\theta_{sp}-20\right)\right)$magnetic steel at operating temperature
Related
$A_{sp}$
Cross-sectional area of steel pipe [mm$^2$]
$\alpha_{sp}$
Temperature coefficient of steel pipe material [1/K]
$\rho_{sp}$
Specific electrical resistivity of steep pipe material [$\Omega$.m]
$\theta_{sp}$
Temperature of steel pipe [°C]
Used in
$I_{sp}$
Induced circulating current pipe [A]
$\lambda_3$
Loss factor of steel pipes for pipe-type cables
$Z_h$
Zero-sequence impedance [$\Omega$/m]