Phase-phase and phase-phase-ground
20 novembro 2014, 11:00 • Luis Marcelino Ferreira
Phase-phase fault: Ia=0
Why this choice
Id+Ii+Ih=0, Vd=Vi, Ih=0, Vh undefined (later to be verified to be null, as Vb=Vc=-1/2Va)
Overall circuit (two in parallel, one out)
Phase-phase-ground fault: Ia=0
Id+Ii+Ih=0, Vd=Vi=Vh
Overall circuit (three in parallel, duality from single phase to ground fault)
Formulas and how to apply the results obtained