In low voltage power system, harmonic currents can occur from
rectifiers and some others electrical componets. I have found a
formular for k-faktor derating of transformers when harmonic currents
is present. What about deratings for 4 wire cables and synchronous
generators (about 1000kVA, 400V)?

And the 2. question:

In low voltage system where harmonic current is present…, how will the harmonic current flow in the system and how do harmonic currents generate from deferent devices interact with each other?

I hove some one out there can help me...

Ian

And the 2. question:

In low voltage system where harmonic current is present…, how will the harmonic current flow in the system and how do harmonic currents generate from deferent devices interact with each other?

I hove some one out there can help me...

Ian