Factor $\alpha_p$

Factor $\alpha_p$ for the calculation of the factor $p_1$ used to calculate the geometric factor for multi-core cables with round conductors.

Symbol
$\alpha_{p}$
Formulas
$\frac{1}{\left(1+\frac{X_{G}}{1+\frac{X_{G}}{1+Y_{G}}}\right)^2}$two-core cables, IEC 60287-2-1
$\frac{1}{\left(1+\frac{2X_{G}}{1+\frac{2}{\sqrt{3}} \left(1+\frac{2X_{G}}{1+Y_{G}}\right)}\right)^3}$three-core cables, IEC 60287-2-1
$\frac{\left(c_{c}+r_{c}\right)^{n_{c}}}{\left(c_{c}+r_{c}+t_{i}+t_{f}\right)^{n_{c}}}$multi-core cables, Mie1905