Ratio of losses in conductor and screen/sheath to losses in conductor affecting the filler of multi-core cables.

Symbol
$q_{\mathrm{f}}$
Unit
-
Formulae
$\lambda_{\mathrm{1}} + 1$separate screen / separate sheaths (type SS)
$\frac{\lambda_{\mathrm{1}}}{2} + 1$separate screen / common sheath (type SC)
$1$common screen / common sheath (type CC)
Related
$\lambda_{\mathrm{1}}$
Used in
$Q_{\mathrm{B_{\mathrm{f}}}}$