Factor $\alpha_M$

Factor $\alpha_M$ for the calculation of the geometric factor for multi-core cables according to IEC 60287-2-1.

Symbol
$\alpha_{M}$
Formulae
$\frac{1}{\left(\frac{X_{G}}{\frac{X_{G}}{Y_{G} + 1} + 1} + 1\right)^{2}}$$n_{c} \leq 2$
$\frac{1}{\left(\frac{2 X_{G}}{\frac{2 \sqrt{3} \left(\frac{2 X_{G}}{Y_{G} + 1} + 1\right)}{3} + 1} + 1\right)^{3}}$$n_{c} \geq 3$
Used in
$\beta_{M}$