Losses in pipe

In case of ferromagnetic steel pipes, the conductor current induces a current in the pipe which causes additional losses. According to IEC, the losses in ferromagnetic steel pipes are part of the armour losses $W_A$ for pipe-type cables. We consider them with a separate loss-factor for cables in a common pipe.

Symbol
$W_{p}$
Unit
W/m
Formulae
$W_{c} \lambda_{3}$
Related
$\lambda_{3}$
$W_{c}$
Used in
$\Delta \theta_{c}$
$\theta_{de}$