Chapter 4 Measurements
Accura 3300E User Guide
Page 74
ⓒ
2015 Rootech Inc. All Rights Reserved
Single Phase 3 Wire Connection
Fig 4.4 Connection with 2 PTs and 2 CTs, Wiring Mode = 1P3U (1P3W Connection)
Voltage Measurement
Vector Diagram
Item
Description
V
N
V
1
V
3
V
N
:
Voltage of connected N terminal
line to neutral
voltage sensing
▶
Sensing line to neutral voltage[V1, V3]
based on connected N terminal voltage
(real line to neutral voltage)
V
A
= V1
V
B
= 0 (by 1P3W configuration)
V
C
= V3
Calculation of line
to line voltage
V
AB
= 0 (by 1P3W configuration)
V
BC
= 0 (by 1P3W configuration)
V
CA
= V
C
–
V
A
= V3
–
V1
Provided Measurement Data
Item
L-N Voltage [rms]
L-L Voltage [rms]
Current [rms]
Active Power
Phase A
V
A
0
I
A
(I1)
P
A
= V
A
* I
A
* PF
A
Phase B
0
0
0
0
Phase C
V
C
V
CA
I
C
(I3)
P
C
= V
C
* I
C
* PF
C
Average/ Total
(V
A
+V
C
)/2
V
CA
(I
A
+I
C
)/2
P
A
+P
C
Summary of Contents for ACCURA 3300E
Page 1: ......
