5
3.5 Terminal corresponding wiring chart
Description
1.The brackets in the voltage input terminal indicate the 3 phase 3 wires connection
2.The current "*" is the current input terminal, all outgoing lines must be unified.
Otherwise,the measurement will be inaccurate.
3.If there is any change in the wiring, please take the wiring diagram of the instrument case as the standard.
Energy Pulse
Voltage Signal
Input
Current Signal
Input
17
18
19
20
21
22
23
24
25
26
27
28
29
RP
AP
PCOM
UA (Ua)
UB
UC (Uc)
UN (Ub)
IA*
IA
IB*
IB
IC*
IC
Reactive energy pulse poer
Active energy pulse port
Pulse output common port
3 phase 4 wires A phase voltage input
(3 phase 3 wires A phase voltage input)
3 phase 4 wires B phase voltage input
3 phase 4 wires C phase voltage input
(3 phase 3 wires C phase voltage input)
3 phase 4 wires 0 phase voltage input
(3 phase 3 wires B phase voltage input)
A phase current inflow
A phase current outflow
B phase current inflow
B phase current outflow
C phase current outflow
Category
Power
Alarm or remote
control output
Transmission
Output
Blank
Communication
Switch Input
Corresponding
terminal number
1
2
3
4
5
6
7
8
9
0
10
11
12
13
14
15
16
L(+)
N(-)
NO
NC
ACOM
NO
NC
AO+
AO-
Blank
B-
A+
COM
S1
S2
S3
S4
Optional AC and DC power supply
；
Range
：
AC
：
85
～
265V DC:100
～
240V
NO: 1st alarm open
NC:1st alarm close
Alarm or remote control
NO:2nd alarm open
NC:2nd alarm close
4
～
20mA outflow positive
4
～
20mA outflow negative
Unused
RS485 Negative communication
RS485 Positive communication
Switch input common (communication mask
access point)
Switch input 1st loop
Switch input 2nd loop
Switch input 3rd loop
Corresponding
letter
Input & output
directions
Input
Input
Output
Output
Output
Output
Output
Output
Output
Output/Input
Output/Input
Input
Input
Input
Input
Input
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Description
C phase current inflow
Switch input 4th loop
3.6 Connection Drawing
6
Ia* Ia Ib* Ib Ic*
Ic
A
B
C
N
24 25 26
28 29
27
Ua
Uc
Ub
Un
23
21 22
20
24 25 26
28 29
27
23
21 22
20
Ua Ub Uc Un
Ia* Ia Ib* Ib Ic*
Ic
A
B
C
N
Ua
Un
24 25 26
28 29
27
23
21 22
20
Ia* Ia
L
N
3 phase 4 wires
3 phase 4 wires
single phase
Ua
Uc Ub
24 25 26
28 29
27
23
21 22
20
Ia* Ia
Ic*
Ic
A
B
C
24 25 26
28 29
27
23
21 22
20
Ua
Uc Ub
Ia* Ia
Ic*
Ic
A
B
C
24 25 26
28 29
27
23
21 22
20
Ia* Ia
L
N
Ua
Un
3 phase 3 wires
3 phase 3 wires
single phase
Note
1.When the input voltage is higher than the rated input voltage of the product, you should consider using a
PT. For ease of maintenance, it is recommended to use a wiring board.
2.The standard rated input current is 5A, 1A or greater than 5A, the external CT should be used.If there
are other meters connected to the CT, the wiring should be connected in series.Before removing the
current input connection of the product, it is necessary to disconnect the primary circuit of the CT or
short the secondary circuit. It is recommended to use the terminal block for maintenance.
3.To ensure that the input voltage and current correspond, the phase sequence is consistent and the
direction is the same, otherwise there will be errors in the values and symbols of power and energy, etc.
4.The instrument can work in 3 phase 4 wires mode or 3 phase 3 wires mode. The user should select the
appropriate wiring mode according to the field use conditions. The 3 phase 3 wires mode is generally
used without a center line, and the 3 phase 4 wires mode is used with a center line. It should be noted
that the on-site wiring must be the same as the wiring set in the meter, otherwise the meter's
measurement data is incorrect.
