YOKOGAWA WT500 User Manual page 77

3.9 Wiring the Circuit That You Will Measure for Direct Input
Three-Phase, Three-Wire System Wiring Example (Applicable for models 760202
and 760203)
SOURCE
R
S
T
Wiring Example of a Three-Phase, Three-Wire System with a Three-Voltage,
Three-Current Method (3P3W; 3V3A) (Applicable for model 760203)
SOURCE
R
S
T
Input terminal 1
Three-Phase, Four-Wire System Wiring Example (Applicable for model 760203)
SOURCE
R
S
T
N
Input terminal 1
3-16
If three input elements are available, two three-phase, three-wire systems can be set up
(elements 1 and 2, or elements 2 and 3).
U
±
I
±
Input terminal 1
If three input elements are available, one three-phase, three-wire system with a three-
voltage, three-current method can be set up (elements 1, 2, and 3).
U U
± ±
I I
± ±
Input terminal 2
If three input elements are available, one three-phase, four-wire system can be set up
(elements 1, 2, and 3).
U U
± ±
I I
± ±
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."
LOAD
SOURCE
U
±
I
±
Input terminal 2
LOAD
U
±
I
±
Input terminal 3
LOAD
U
±
I
±
Input terminal 3
±
I
I1
R
T S
I2
I
± U
U2
±
±
I
I1
R
U
SOURCE
U3 U1
±
S
T
I2
I ±
U2
I3
I ±
±
I
I1
R
SOURCE
N
T S
U3
I2
I ±
I3
I ±
U
U1
±
LOAD
U
LOAD
±
U
±
U
U1
±
LOAD
± ±
U2
U
U
IM 760201-01E