When two systems are not in phase, which is usually the case for different frequencies, then there exists a certain phase shifting between them. With the value $α_f$, the shift of phase to ° can be set each system separately. The phase-shift is relevant for calculation of the magnetic field.

Symbol
$\alpha_{\mathrm{f}}$
Unit
°
Used in
$I_{\mathrm{EMF}}$
Choices
IdFrequency
0.0
60.060°
120.0120°
180.0180°
240.0-120°
300.0-60°