YOKOGAWA WT1800 User Manual page 50

Wiring Example of a Three-Phase, Three-Wire System (3P3W)
with Shunt-Type Current Sensors
SOURCE
I
R
OUT H
S
T
Wiring Example of a Three-Phase, Three-Wire System That Uses
a Three-Voltage, Three-Current Method (3P3W; 3V3A) with Shunt-
Type Current Sensors
SOURCE
I
R
S
OUT H
T
Wiring Example of a Three-Phase, Four-Wire System (3P4W) with
Shunt-Type Current Sensors
SOURCE
I
R
OUT H
S
T
N
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."
IM WT1801-03EN
2.10 Wiring the Circuit under Measurement When Using Current Sensors
±
OUT L
U
±
EXT
Input element 1
±
I
OUT L
OUT L
OUT H
U
±
EXT
Input element 1
±
OUT L
I
OUT H
U
±
EXT
Input element 1
I ±
OUT L
OUT H
Input element 2
±
I
±
OUT H OUT L
U
±
EXT
Input element 2 Input element 3
±
OUT L
I
OUT H OUT L
U
±
EXT
Input element 2
LOAD
U
±
EXT
LOAD
U
±
EXT
LOAD
±
U
±
EXT
Input element 3
2-21
1
2
3
4
5
6
App
Index