Neutral current in three-phase systems

[bachir1994]

Hello,
In three-phase systems, star coupling for example, and in the case where single-phase sources are supplied using the three phases L1, L2 and L3 with a common neutral return,
My first question is: when one is balanced il1 = il2 = Il3 is what the current flowing in the neutral is zero, indifferently that the charges are R, L, C and RLC.

thank you

 

[anorlunda]

The neutral current will be zero only if the three load currents are equal in magnitude and phase angle. So an R load, a L load and a C load do not add up to zero. It is not indifferent.