If there is unbalanced current flowing the the neutral of a 3-phase, 4-wire system is this current considered zero sequence current?
I know that in a 3-phase, 3-wire, system there is no zero sequence current unless there is a ground fault with ground current flowing. Even if the 3 phases are unbalanced the vector sum of the three phase currents will always equal zero in an unfaulted condition, even if unbalanced, and therefore there is no zero sequence present unless there is a ground fault.
So for unbalanced current flowing on the neutral of a 3-phase system, is this current considered zero sequence current?
I know that in a 3-phase, 3-wire, system there is no zero sequence current unless there is a ground fault with ground current flowing. Even if the 3 phases are unbalanced the vector sum of the three phase currents will always equal zero in an unfaulted condition, even if unbalanced, and therefore there is no zero sequence present unless there is a ground fault.
So for unbalanced current flowing on the neutral of a 3-phase system, is this current considered zero sequence current?