Hi, I've done some searching and am struggling to find relevant answers. I have an existing 6kW grid tie system using 22 LG panels and a 6kW Fronius Primo inverter. I recently acquired a whole additional 3kW system (8 Astroenergy 405W panels, 1 3.6kW Solis inverter), that someone was selling at discount due to aborting their project. I want to add this new system to my house.
From what I've read of the Solis inverter, it's compliance with "Rule21" and UL1741SA gives a few different options for how the inverter controls the power it outputs such as "Volt-Watt", "Volt-Var". It seems to me that either of these options would allow the two inverters to be connected to the same 240V split phase service panel. Correct? I have not found similar documentation from the Fronius inverter; only that Fronius:
"inverters can be combined in parallel by using the Fronius Solar Net input and output connections. This establishes a communications ring for the paralleled inverters which allows them to work together for increased total output capacity. This means that you can add additional Primo inverters at a later date."
Can anyone offer advice?
From what I've read of the Solis inverter, it's compliance with "Rule21" and UL1741SA gives a few different options for how the inverter controls the power it outputs such as "Volt-Watt", "Volt-Var". It seems to me that either of these options would allow the two inverters to be connected to the same 240V split phase service panel. Correct? I have not found similar documentation from the Fronius inverter; only that Fronius:
"inverters can be combined in parallel by using the Fronius Solar Net input and output connections. This establishes a communications ring for the paralleled inverters which allows them to work together for increased total output capacity. This means that you can add additional Primo inverters at a later date."
Can anyone offer advice?