Appendix I: Parallel Function - INFOSEC UPS SYSTEM G1 Solar MPPT Manuel Utilisateur

Appendix I: Parallel function

1. Introduction
G1 MPPT inverter can be used in parallel with two different operation modes.

Parallel operation in single phase with up to 9 units. The maximum supported output power is 45KW.

9 units work together at its maximum to support three-phase equipment. Seven units support one phase at
its maximum. The maximum supported output power is 45KW and one phase can be up to 35KW.
2. Package Contents
In the package, you will find the following items:
Parallel communication cable
3. Wiring Connection
The cable size of each inverter is shown as below:
3.1 Recommended battery cable and terminal size for each inverter:
Model Wire Size
G1 Solar 1*4AWG
MPPT
2*8AWG
5KW
WARNING: Be sure the length of all battery cables is the same. Otherwise, there will be difference in voltage
between G1 Solar MPPT and battery which may cause parallel inverters not to work
3.2 Recommended cable size for AC input and output each inverter:
Model
G1 Solar MPPT 5KW
You need to connect the cables of each G1 Solar MPPT. 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.
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INFOSEC UPS SYSTEM - 15, rue du Moulin - 44880 Sautron - FRANCE - www.infosec-ups.com
Hot Line – Tel + 33 (0)2 40 76 15 82 - Fax + 33 (0)240 94 29 51 - hotline@infosec.fr – 08 17 AA 59 201 05
Current sharing cable
Ring Terminal
Cable Dimensions
2
mm D (mm)
25 6.4
16 6.4
AWG no./ mm2
8 AWG / 10 mm2
Torque
value
L (mm)
33.2
2~ 3 Nm
29.2
Ring terminal:
Torque
1.4~1.6Nm