`
- 6 -
为用于CT二次侧短接的试验端子;
注：
Installation method of open and close type mutual induction
Direct
ion of
curren
t
Positive pole（red）
Negative
pole（white）
Roche coil mounting method
5.4Method of connection
（Note:in case of any inconsistency with the wiring diagram on the meter housing,the wiring diagram
on the meter housing shall prevail）
According to different design requirements,it is recommended to add fuses in the power supply and voltage input
terminals to meet the safety requirements of relevant electrical codes
A
B
C
N
U
A
U
B
U
C
U
N
I
A
*
I
A
I
B
*
I
B
I
C
*
I
C
F U S E S
A
B
C
N
U
A
U
B
U
C
U
N
I
A
*
I
A
I
B
*
I
B
I
C
*
I
C
F U S E S
A
B
C
U
A
U
B
U
C
U
N
I
A
*
I
A
I
B
*
I
B
I
C
*
I
C
F U S E S
A
B
C
U
A
U
B
U
C
U
N
I
A
*
I
A
I
B
*
I
B
I
C
*
I
C
F U S E S
3 - p h a s e , 4 - w i r e 3 C T
3 - p h a s e , 4 - w i r e 3 P T 、 3 C T
3 - p h a s e , 3 - w i r e 2 C T
3 - p h a s e , 4 - w i r e 2 P T 、 2 C T
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
S 1
S 2
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
5
6
7
8
9 1 0
1
2 3
4
5
6
7
8
9 1 0
1
2 3
4
5
6
7
8
9 1 0
1
2
3
4
5
6
7
8
9 1 0
1
2 3
4
24 25
Switch input (4DI)
26
DI
1
DI
2
A
A1
B
C
B1
34 35
Switch output(2DO)
36
DO
1
DO
2
C1
17 18
Ep
+
19
Eq
+
E-
2 pulse (2EP)
27 28
DI
3
DI
4
21
22
A
RS485通讯
B
L N
FUSE
辅助电源
L
N
1213
Accessory power
RS485 communication
It is a test terminal for CT secondary side short coonnection.