98
9. Appendix
9.2. A List of Examples for Incorrect Wiring Display
9.2.3. 1-phase 3-wire System
Note1: The above examples for incorrect wiring are typical. Extreme cases are excluded such as burnout or destruction of
the instrument, VT, or CT caused by voltage application to a current circuit or current application to a voltage circuit.
∠
V
1N
∠
V
3N
∠
I
1
∠
I
3
W
1
W
3
V
1N
V
3N
V
13
I
1
I
N
I
3
1
N
3 1 side CT3 side CT
LEAD 0.707
315 315
LEAD 0.866
330 330
1.000
0
0
LAG 0.866
30
30
LAG 0.707
45
45
LEAD 0.707
135 135
LEAD 0.866
150 150
1.000
180 180
LAG 0.866
210 210
LAG 0.707
225 225
LEAD 0.707
135 315
LEAD 0.866
150 330
1.000
180
0
LAG 0.866
210
30
LAG 0.707
225
45
LEAD 0.707
315 315
LEAD 0.866
330 330
1.000
0
0
LAG 0.866
30
30
LAG 0.707
45
45
LEAD 0.707
135 135
LEAD 0.866
150 150
1.000
180 180
LAG 0.866
210 210
LAG 0.707
225 225
LEAD 0.707
135 315
LEAD 0.866
150 330
1.000
180
0
LAG 0.866
210
30
LAG 0.707
225
45
No.
Power Factor
(Input)
At balanced load (V
1N
=V
3N
(or V
2N
), I
1
=I
3
(or I
2
))
Connection (*1)
Phase Angle Display Active Power Display
Voltage Display
Current Display
Voltage
Current
Connection
43
0
0
W
1
=Negative value
W
3
=Negative value
V
1N
>
V
3N
=
V
13
42
0
0
W
1
>
W
3
V
1N
>
V
3N
=
V
13
I
1
=
I
3
<
I
N
PN
P3
P1
+C3-C3
Normal
+C1-C1
Reverse
PN
P3
P1
+C3-C3
Reverse
+C1-C1
Normal
I
1
=
I
3
<
I
N
45
0
180
W
1
=Positive value
W
3
=Negative value
V
1N
=
V
3N
<
V
13
44
0
0
W
1
=Negative value
W
3
=Positive value
V
1N
>
V
3N
=
V
13
I
1
=
I
3
<
I
N
P3
PN
P1
+C3-C3
Reverse
+C1-C1
Normal
PN
P3
P1
+C3-C3
Reverse
+C1-C1
Reverse
I
1
=
I
3
I
N
=
0
47
0
180
W
1
=Negative value
W
3
=Negative value
V
1N
=
V
3N
<
V
13
46
0
180
W
1
=Negative value
W
3
=Positive value
V
1N
=
V
3N
<
V
13
I
1
=
I
3
I
N
=
0
P3
PN
P1
+C3-C3
Reverse
+C1-C1
Reverse
P3
PN
P1
+C3-C3
Normal
+C1-C1
Reverse
I
1
=
I
3
<
I
N
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3
+C2
C2
+C3
C3
P1
P3
P2
+C1
C1
PN
K
L
k
l
K
L
k
l
1
N
3