Pag. 53 di 152
8.2 3P 3W Three phase without neutral
1
1
I
1
3
2
I
3
I
2
U
12
U
23
U
31
3
2
Voltage inputs
Current inputs
I
12
I
23
I
31
8.2.1 Available Reading:
1 Frequency:
Voltage frequency
N
V
1
:
f
2 RMS
amplitude:
Phase-phase Voltages:
12
U
,
23
U
,
31
U
Mean Phase-phase Voltage:
∆
U
Line Currents:
1
I
,
2
I
,
3
I
Mean three phase Current:
Σ
I
3
Total harmonic distortion (in percentage):
THD of the Phase to phase Voltages
12
U
THD
,
23
U
THD
,
31
U
THD
Average THD of the Phase to phase Voltages
∆
U
THD
THD of the line currents:
1
I
THD
,
2
I
THD
,
3
I
THD
Average THD of the line currents
Σ
I
THD
4
Power (on the short period):
3 Phase Active Power:
Σ
P
3 Phase Reactive Power:
Σ
Q
3 Phase Apparent Power:
Σ
S
5 Power
Factor:
3 Phase Power Factor:
Σ
λ
6 Energies:
Active Energy (import):
+
a
E
Active Energy (export):
−
a
E
Inductive reactive Energy with import Active Power:
+
ind
r
E
Capacitive reactive Energy with import Active Power:
+
cap
r
E
Inductive reactive Energy with export Active Power:
−
ind
r
E
Capacitive reactive Energy with export Active Power:
−
cap
r
E
