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Appendix I: Parallel function
1. Introduction
This inverter can be used in parallel with two different operation modes.
1.
Parallel operation in single phase with up to 6 units. The maximum supported output power is 30KW.
2.
Six units work together at its maximum to support three-phase equipment. Four units support one phase at
its maximum. The maximum supported output power is 30KW and one phase can be up to 20KW.
NOTE:
If this unit is bundled with shared current cable and parallel cable, this inverter is supported parallel
operation at default. You may skip section 2. If not, please purchase parallel kit and install this unit according to
the following instructions by professional technical personnel from local dealer.
2. Package Contents
In parallel kit, you will find the following items in the package:
Parallel communication cable Current sharing cable
3. Wiring Connection
The cable size of each inverter is shown as below:
Recommended battery cable and terminal size for each inverter:
Model
Wire Size
Ring Terminal
Torque
value
Cable
mm
2
Dimensions
D (mm)
L (mm)
5KW
1*4AWG
22
6.4
33.2
2~ 3 Nm
2*8AWG
14
6.4
29.2
WARNING:
Be sure the length of all battery cables is the same. Otherwise, there will be difference in voltage
between inverter and battery which may cause parallel inverters not to work
Recommended cable size for AC input and output each inverter:
Model
AWG no.
Torque
5KW
8 AWG
1.4~1.6Nm
You need to connect the cables of each inverter. Take the battery cables for example: You need to use a
connector or bus-bar as a joint to connect the battery cables, and then connect it to the battery terminal. The
cable size used from joint to battery should be X times to the cable size in the tables above. “X” indicates the
number of inverters connected in parallel.
Regarding AC input and output, please also follow the same principle.
CAUTION!!
Please install the breaker at the side of battery and AC input. This will ensure the inverter securely
is disconnected during maintenance and fully protected from over current of battery or AC input. The
recommended mounted location of the breakers is shown in the chart in sections 4-1 and 4-2.
Ring terminal:
