Good day,
I have a 3ph quattro off-grid system (mobile) and cannot use a permanent grounding.
Therefore, I disabled the Ground Relay and installed an insulation monitoring device for safety.
The problem is that the voltages are not equal:
L1/N: 211V
L2/N: 235V
L3/N: 235V
This is when no load is connected.
What could cause this deviation?
Many thanks
