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Positive sequence resistance

Definition according to publication 'Fundamentals of calculation of earth potential rise in the underground power distribution cable network' (Parsoatam1997)

Symbol
$R_1$
Unit
$\Omega$/m
Formulae
$R_c$general case
$R_{cDC} \left(1+\lambda_2\right)$armoured three-core cables bonded at both sides
$R_{cDC} \left(1+y_p+y_s+\lambda_1+\lambda_2+\lambda_3\right)$pipe-type cables
Related
$\lambda_1$
Loss factor of shield (screen and sheath)
$\lambda_2$
Loss factor of armour
$\lambda_3$
Loss factor of steel pipes for pipe-type cables
$R_c$
Electrical resistance of conductor [$\Omega$/m]
$R_{cDC}$
Electrical DC resistance of conductor [$\Omega$/m]
$y_p$
Proximity effect factor of conductors
$y_s$
Skin effect factor of conductor
Used in
$Z_1$
Positive sequence impedance [$\Omega$/m]