ROOTECH ACCURA 2300S, Manual

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Chapter 5 Measurements Accura 2300S/2350-1P3FSC User Guide
Page 148 ⓒ 2015 Rootech Inc. All Rights Reserved
V
A
V
B
V
C
V
A
= V
1
– V
n
V
B
= V
2
– V
n
V
C
= V
3
– V
n
V
2
V
3
V
1
V
n
V
N
Calculation of virtual
line-to-neutral voltage ▶ Calculate virtual line-to-neutral voltage based
on the virtual neutral voltage.
V
A
= V
1
- Vn
V
B
= V
2
- Vn
V
C
= V
3
– Vn
The residual voltage value of the virtual line-to-
neutral voltage is 0.
Calculation of line-to-
line voltage 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
Available Measurement Values
Item Line-to-neutral
voltage(rms) Line-to-line
voltage(rms) Current(rms) Active Power
A Phase V
A
V
AB
I
A
(I
1
) P
A
= V
A
* I
A
* PF
A
B Phase V
B
V
BC
I
B
(I
2
) P
B
= V
B
* I
B
* PF
B
C Phase V
C
V
CA
I
C
(I
3
) P
C
= V
C
* I
C
* PF
C
There is no actual neutral point in the 3-phase 3-wire voltage connection mode. Thus, you can find out
only the line-to-line voltage and the total power, and the data on the actual voltage and the power for
each phase cannot be obtained. However, by using a virtual neutral point where the residual voltage
value of the three phase voltages becomes zero, voltage and power values for each phase can be
calculated.