Incorrect Wiring Patterns Detected By ①Pattern Display Of Incorrect Wiring - Mitsubishi Electric ME96SSEB-MB User Manual

4. How to Use Test Mode
4.3. Test Menu 6：Functions for Determining Incorrect Wiring
4.3.1. Incorrect Wiring Patterns Detected by ①Pattern display of incorrect wiring
This function is designed with the assumption that either a current input or a voltage input is incorrectly wired in
positive phase sequence. It is not possible to determine all incorrect wiring.
Dashed lines indicate incorrect wiring parts.
■For 3-phase 4-wire system
No. Wiring diagram
1 Normal
1 2 3 N
k
K
l
L
k
K
l
L
K k
l
L
U u
V v
U
u
v
V
u
U
v
V
Reversed phase sequence 1 *1
1 2 3 N
k
K
l
L
k
K
l
L
K k
l
L
U u
V v
U
u
v
V
u
U
v
V
Reversed phase sequence 2 *1
1 2 3 N
k
K
l
L
k
K
l
L
K k
l
L
U u
V v
U
u
V v
u
U
v
V
Reversed phase sequence 3 *1
1 2 3 N
K k
l
L
k
K
l
L
K k
l
L
U u
V v
U
u
v
V
u
U
v
V
Reverse connection of 1 side CT
2
1 2 3 N
k
K
l
L
k
K
l
L
K k
l
L
U u
V v
U
u
v
V
u
U
v
V
*1. Correct measurement is possible even in reversed phase sequence.
*2. For low voltage circuits, it is not necessary to ground the VT and CT secondary side circuits.
No. Wiring diagram
3 Reverse connection of 2 side CT
1 2 3 N
K k
+C1
l
C1
L
K k
+C2
l
C2 L
K k
+C3
l
C3 L
U u
P1
V v
U
P2 u
v
V
P3
u
U
v
PN V
Reverse connection of 3 side CT
4
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
L
C2
K k
+C3
l
L
C3
U u
P1
V v
U
u
P2
v
V
P3 u
U
v
V
PN
Reverse connection of 1 side CT
5
and 2 side CT
1 2 3 N
+C1
K k
C1
l
+C2 L
k
K
C2
l
L
+C3
K k
C3
l
L
P1
U u
P2
V v
U
u
P3
v
V
u
PN U
v
V
6 Reverse connection of 2 side CT
and 3 side CT
1 2 3 N
+C1
k
K
C1
l
+C2 L
k
K
C2
l
L
+C3
K k
C3
l
L
P1
U u
P2
V v
U
P3 u
V v
PN
u
U
v
V
Reverse connection of 1 side CT
7
and 3 side CT
1 2 3 N
+C1
k
K
C1
l
+C2 L
k
K
C2
l
L
+C3
K k
C3
l
L
P1
U u
P2
V v
U
P3 u
v
V
PN
u
U
v
V
No. Wiring diagram
8 Reverse connection of 1 side CT, 2
side CT, and 3 side CT
1 2 3 N
+C1
k
K
C1
l
+C2 L
k
K
C2
l
L
+C3
K k
C3
l
L
P1
U u
P2
V v
U
P3
u
v
V
PN
u
U
v
V
Switch between 1 side CT
9
and 2 side CT
1 2 3 N
+C1
k
K
C1
l
+C2
L
k
K
C2
l
L
+C3
K k
C3
l
P1
L
U u
P2
V v
U
P3
u
v
V
PN
u
U
v
V
Switch between 2 side CT
10
and 3 side CT
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
C2
L
K k
+C3
l
C3
L
P1 U u
V v
P2 U
u
v
V
P3
u
U
PN
v
V
11 Switch between 1 side CT
and 3 side CT
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3
L
U u
P1
V v
U
P2
u
v
V
P3
u
U
PN v
V
Reverse connection between
12
terminals P1 and P2
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3 L
U u
P1
V v
U
P2
u
V v
P3
u
U
v
PN
V
43
No. Wiring diagram
13 Reverse connection between
terminals P2 and P3
1 2 3 N
K k
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3
L
U u
P1
V v
U
P2
u
V v
P3
u
U
PN v
V
Reverse connection between
14
terminals P1 and P3
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3
L
U u
P1
V v
U
P2
u
v
V
P3
u
U
PN v
V
Reverse connection between
15
terminals P1 and PN
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3 L
U u
P1
V v
U
P2
u
v
V
P3
u
U
v
PN
V
16 Reverse connection between
terminals P2 and PN
1 2 3 N
k
K
+C1
l
C1
L
k
K
+C2
l
L
C2
K k
+C3
l
C3 L
U u
P1
V v
U
P2 u
V v
P3 u
U
v
PN V
Reverse connection between
17
terminals P3 and PN
1 2 3 N
K k
+C1
l
C1
L
k
K
+C2
l
C2 L
K k
+C3
l
C3
L
U u
P1
V v
U
P2
u
v
V
P3
u
U
v
PN
V
+C1
C1
+C2
C2
+C3
C3
P1
P2
P3
PN
+C1
C1
+C2
C2
+C3
C3
P1
P2
P3
PN
+C1
C1
+C2
C2
+C3
C3
P1
P2
P3
PN
+C1
C1
+C2
C2
+C3
C3
P1
P2
P3
PN
+C1
C1
+C2
C2
+C3
C3
P1
P2
P3
PN