47
Wattsonic AIO ESS | USER MANUAL
7) Screw up the rubber ring and anti-water
cap to make sure the AC connector is well
sealed.
2) The CTs have been connected to the
Sunways Meter when you received them, and
you just need to follow the wiring diagram in
the Meter to connect CT.
Meter and CT connection
1) The current transducer, also called CT, is
usually installed on the fire wires between
the house loads and the power grid.
The Meter can install in the AC combiner box
or other places that are unable to be touched
by children. Wattsonic CT integrated a cable
with length of 2m and could be extended to
5m at max.
Attention: CT installation direction and phase sequence should strictly follow the
instruction in the user manual, otherwise, the inverter may not be working normally.
Attention: The CT has to be corresponding with the port in the meter, and the
connection between CT and Meter needs to be reliable, otherwise, the CT
measurement accuracy may be affected.
Note: The rated current of CT in the inverter accessory box is 80A, and the maximum
allowed inserted cable diameter is 16mm. If the max current through the CT exceeds
the rated current or the cable diameter wider than 16mm, please contact Wattsonic
for help.
No.
Definition
Function
1
L1
L1/L2/L3/N connect to grid to detect
power grid voltage
2
L2
3
L3
4
N
5
L1-S1
Connect CT to detect current
6
L1-S2
7
L2-S1
8
L2-S2
9
L3-S1
10
L3-S2
12
L
Power supplied from grid
13
N
RS485
RS485
Communicate with inverter
PV
Array
Grid
Normal
Loads
RCD
RCD
Back-up
Loads
PV
Array
Communication
Communication
BACK-UP
The additional
grounding hole
ON-GRID
PV1+
Breaker
E-BAR
N-BAR
Breaker
RJ45
1(L1)
5(L1
-S1)
12(L)
9(L3-S1)
10(L3-S2)
2(L2)
6(L1
-S2)
3(L3)
7(L2-S1)
4(N)
8(L2-S2)
13(N)
Breaker
Main Switch/Breaker
CT
CT-1
CT-2
CT-3
Switch/Breaker
L1
L1
L2
L2
L3
L3
N
N
PV2+
PV1-
PV2-
RJ45-BMS
RJ45-Meter
B+
B-
Battery
Wattsonic
Hybrid
Inverter
Meter
Meter terminals definition
House
→
Grid
House
→
Grid
1
2
3
4
12
13
9
10
21
22
23
RS485
567
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