856LE008146B
Measurement functions
6.4 Measuring unbalances
List of unbalance values:
Electrical variable Symbol used 3-pole
version
4-pole
version
Phase current unbalance Inba1, Inba2, Inba3
■ ■
Neutral current unbalance IN Unb
-
■
Instantaneous maximum unbalanced phase
current without neutral
Inba
■
-
Instantaneous maximum unbalanced phase
current with neutral
Inba
-
■
Single voltage unbalance U12 Unb, U23 Unb, U31 Unb
■ ■
Maximum instantaneous compound volt-
age unbalance
Max Unb U
■ ■
Single voltage unbalance V1N Unb, V2N Unb, V3 Unb
-
■
Maximum instantaneous single voltage
unbalance
Max Unb V
-
■
ATTENTION
Unbalanced values are indicated in the form of relative values as a %.
The calculation of these values is based on the measurement of current and voltage
amplitudes.
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