ROOTECH Accura 2300 Front, Руководство пользователя

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Chapter 5 Measurement Description Accura 2300/2350 User Guide
Page 192
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Measurement for Voltage Connection
Voltage, current and power measurements corresponding to voltage connection are as follows.
3-Phase 4-Wire
Voltage connection
Fig 5.1 3PT 3CT Wiring, 3P4W Connection
Voltage measurement
Vector Diagram Item Description
V
1
V
2
V
3
Line-to-neutral voltage
sensing ▶
Line-to-neutral voltage[V
1
, V
2
, V
3
] sensing based
on wired N terminal voltage (real line-to-neutral
voltage)
V
A
= V
1
V
B
= V
2
V
C
= V
3
Line-to-line voltage
calculation V
AB
= V
A
– V
B
= V
1
– V
2
V
BC
= V
B
– V
C
= V
2
– V
3
V
CA
= V
C
– V
A
= V
3
– V
1
Measured values provided
Item Line-to-neutral voltage[rms] Line-to-line voltage[rms] Current[rms] Active Power
Phase A V
A
V
AB
I
A
(I
1
) P
A
= V
A
* I
A
* PF
A
Phase B V
B
V
BC
I
B
(I
2
) P
B
= V
B
* I
B
* PF
B
Phase C V
C
V
CA
I
C
(I
3
) P
C
= V
C
* I
C
* PF
C
Average/ Total (V
A
+V
B
+V
C
)/3 (V
AB
+V
BC
+V
CA
)/3 (I
A
+I
B
+I
C
)/3 P
A
+P
B
+P
C
V
N