The following figure shows an example graph from ibaPDA (high asymmetry!).

In a symmetrical grid the arrows of the respective phase are located directly over each other.

Name	Description
U#	RMS value of the phase
U# +	Percentage of the positive sequence component
U# -	Percentage of the negative sequence component
U# 0	Percentage of the zero sequence component

Positive sequence component

Negative sequence component

Zero sequence component

The voltages specified here are complex numbers and consist of an amount and an angle.

Negative sequence unbalance

Zero sequence unbalance