Symbol
$L_{\mathrm{1}}$
Unit
H/m
Formulae
$\frac{\mu_{\mathrm{0}}}{2 \pi} \left(\ln{\left (\frac{\sqrt{a_{\mathrm{12}} a_{\mathrm{31}}}}{GMR} \right )} + 1.0 \sqrt{3} i \ln{\left (\frac{a_{\mathrm{12}}}{a_{\mathrm{31}}} \right )}\right)$three-phase system, individual
$\frac{\mu_{\mathrm{0}}}{2 \pi} \ln{\left (\frac{a_{\mathrm{12}}}{GMR} \right )}$three-phase system, trefoil
$\frac{\mu_{\mathrm{0}}}{2 \pi} \left(\ln{\left (\frac{\sqrt{2} a_{\mathrm{12}}}{GMR} \right )} - 1.0 \sqrt{3} i \ln{\left (\sqrt{2} \right )}\right)$three-phase system, flat equal distance
Related
$a_{\mathrm{12}}$
$a_{\mathrm{31}}$
$\mu_{\mathrm{0}}$
Used in
$L_{\mathrm{2}}$
$L_{\mathrm{3}}$