Symbol
$A_{\mathrm{f}}$
Unit
mm²
Formulae
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - \frac{D_{\mathrm{i}}^{2} \pi}{2}$two-core cables type CC
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - 0.625 D_{\mathrm{i}}^{2} \pi - \frac{\sqrt{3} D_{\mathrm{i}}^{2}}{4}$three-core cables type CC
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - \frac{D_{\mathrm{it}}^{2} \pi}{2}$two-core cables type SC
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - 0.625 D_{\mathrm{it}}^{2} \pi - \frac{\sqrt{3} D_{\mathrm{it}}^{2}}{4}$three-core cables type SC
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - \frac{D_{\mathrm{oc}}^{2} \pi}{2}$two-core cables type SS
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - 0.625 D_{\mathrm{oc}}^{2} \pi - \frac{\sqrt{3} D_{\mathrm{oc}}^{2}}{4}$three-core cables type SS
$\frac{D_{\mathrm{f}}^{2} \pi}{4} - \frac{D_{\mathrm{i}}^{2} \pi}{4}$multi-core cables sector-shaped
Related
$D_{\mathrm{f}}$
$D_{\mathrm{i}}$
$D_{\mathrm{it}}$
$D_{\mathrm{oc}}$
Used in
$Q_{\mathrm{f}}$