YOKOGAWA WT110 User Manual page 30

3.5 Wiring the Measurement Circuit when Using External PT/CT
Wiring diagram for three-phase, three-wire system with PT and CT connected
(253502, 253503)
Wiring diagram for three-phase, four-wire system with PT and CT connected
(253503)
Wiring diagram for three-voltage, three-current system with PT and CT
connected (253503)
3-8
SOURCE
R
S
T
CT
L
l
V
±
A
±
Input terminal
(ELEMENT1)
SOURCE
R
S
T
N
L
CT
l
V
±
A
±
Input terminal
(ELEMENT1)
SOURCE
R
S
T
L CT
l
V
±
A
±
Input terminal
(ELEMENT1)
PT
V
v
V L
PT CT
l
v
V
±
A
±
Input terminal
(ELEMENT2)
V PT L CT
l
v
V
±
A
±
Input terminal
(ELEMENT2)
LOAD
CT PT
L V
l v
V
±
A
±
Input terminal
(ELEMENT3)
V L
PT CT
l
v
V
±
A
±
Input terminal
(ELEMENT3)
V PT L CT
l
v
V
±
A
±
Input terminal
(ELEMENT3)
IM 253401-01E
LOAD
V
PT
v
LOAD
V PT
v