The individual phases of the AC voltage source (ElmVac) can be controlled in RMS/EMT simulations.

For that purpose, the voltage source (ElmVac) is linked Fourier Sources (ElmFsrc) by a composite model.

For each phase one ElmFsrc is created which defines the amplitude and angle of the fundamental frequency component. In addition, further frequency components can be defined in case the voltage source is supposed to contain also harmonic content.