[Screenshot 2025-01-01 at 17.49.39] Good day, community. I have two 15kva connected in parallel, with AC1 and AC2 connected to Grid. I see when charging the quattro are taking 15kw however the load is 5kw and battery is charging at 3kw. is this normal? if not where is this power disappearing to?

While there will be voltage at both terminals, the inverters will choose only one source (in your case phase) to connect and synchronise to. It should be ok as long as you don’t have any wiring mix ups. In theory when phse on ac 1 has a blackout it could switch to the other phase if it was still li…

Its way worse there is also solar coming in… Confirming grid connection to ACin1 on bothe units? And acin2 on both units? The quattro will connect to ac in1 as priority over ac2 in. Diagnosis of that will require alot of testing. The most common is poor current sharing in a parallel set up and …

The grid available is three phase, i connected one phase to AC 1 and the second phase to AC2 in, i thought this will prevent overload to a single line. wouldn’t the quattros use both lines?

Should I be removing AC 2 in, and leave it for genset, my worry is overloading that line since the hose is on three phase.

The quattros will not use both ac inputs at the same time. They will either both use the acin1 (priority connect) or use ac2in. Since they are in parrallel you set the input current limit to (80%of) the total for the phase they are installed on using the GX. You can always enable weak ac if it is a…

Thank you, LX. If I understand you, should I then disconnect AC 2 in and only use AC1 in, or should I leave the c connection as is? I don’t have a Genset, so I used the second phase. However, both AC1 and AC2 have power.

Should i be using AC2 out as well or this will overload the AC1 in?

Thank you, this is really helpful; I had a good read of it and maybe my issue is configurations. A quick question, should I be enabling charger on both inverters (Master and Slave)?

2 Quattros connected in parallel

Q&A and troubleshooting

MikeD (Mike ) 1 January 2025 19:04 3

Why are both AC1 and AC2 connected to grid?
Both AC1 of Each Quatro should be connected to grid, but the AC2 in should be left for an independent AC source, like a generator.

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2 Quattros connected in parallel

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