# Geometric constant of circle with characteristic diameter

The geometric constant of the circle with the characteristic diameter $D_{x}$ is based on the book 'Kabel und Leitungen für Starkstrom' by L. Heinhold, 5th edition 1999 (in German).

Symbol
$g_x$
Unit
p.u.
Formulae
 $\frac{2L_c}{D_x}+\sqrt{\left(\frac{2L_c}{D_x}\right)^2-1}$ Daily load cycle $\frac{2L_c}{D_{x,w}}+\sqrt{\left(\frac{2L_c}{D_{x,w}}\right)^2-1}$ Weekly load cycle $\frac{2L_c}{D_{x,y}}+\sqrt{\left(\frac{2L_c}{D_{x,y}}\right)^2-1}$ Yearly load cycle
Related
$D_x$
$D_{x,w}$
$D_{x,y}$
$L_c$
Used in
$g_{dry}$