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Old 08-25-2019, 08:40 PM   #1
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Default Dual Sunny island AC coupling with Fronius Primo?

Im off grid setting up split phase with batteries and gen backup.

I just bought a 36 panel system and it included a Primo as a package deal. I bought 2 new old stock si6048(-10) inverters and have them hooked up to lifepo4 batteries.

Now the si6048s play nice with their own brand of grid tie inverters in an off grid scenario, using frequency shifting to taper off sunny boys when batteries are full and there's not enough loads.

I read that the fronius primo responds to frequency shifting but I'm wondering/taking bets on whether they will work seamlessly as sunny boys, can't find anything online definitive other than someone claiming to have SI and Primo talking on a forum about a different topic.

The plan is to bring SI online first in split phase configuration, then try primo with just a few panels to start and see what happens.

What odds do you think it will release the blue smoke of doom?
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Old 08-25-2019, 09:44 PM   #2
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Old 08-26-2019, 04:17 AM   #3
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