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Diameter armour wire

This is the diameter of a round armour wire. In case of flat wires, an equivalent diameter of a round wire which gives the same cross-section with the flat is calculated.

Symbol
$d_f$
Unit
mm
Formulas
$\sqrt{\frac{4t_{ar} w_{ar}}{\pi}}$
Related
$\pi$
Archimedes' constant $\pi$
$t_{ar}$
Thickness armour [mm]
$w_{ar}$
Width armour [mm]
Used in
$H_1$
Inductance $H_1$ armour [H/m]
$H_2$
Inductance $H_2$ armour [H/m]
$H_3$
Inductance $H_3$ armour [H/m]