YOKOGAWA WT500 User Manual page 84

Wiring Example of a Three-Phase, Three-Wire System (3P3W) with a VT and CT
Wiring Example of a Three-Phase, Three-Wire System with a Three-Voltage,
Three-Current Method (3P3W; 3V3A), a VT, and a CT
SOURCE
R
S
T
L CT
l
U
I
Input terminal 1
Wiring Example of a Three-Phase, Four-Wire System (3P4W) with a VT and CT
SOURCE
R
S
T
N
L CT
l
U
±
I
±
Input terminal 1
IM 760201-01E
3.11 Wiring the Circuit That You Will Measure with a VT or CT
SOURCE
R
S
T
L CT
l
U
±
I
±
Input terminal 1
VT
V
v
Input terminal 2
VT
V
v
Input terminal 2
Note
For details about the relationship between the wiring system and how measured and computed
values are determined, see appendix 1, "Symbols and Determination of Measurement
Functions."
V VT L CT
v l
U
±
I
±
Input terminal 2
VT
L CT V
l v
U
±
I
±
L CT VT
V
l v
U
±
I
±
LOAD
V VT
v
LOAD
VT
L CT V
l v
U
±
I
±
Input terminal 3
LOAD
L CT VT
V
l v
U
±
I
±
Input terminal 3
3-23
1
2
3
4
5
6
7
8
9
10
11
12
13
14
App
Index