AC-coupled system with external meter : weird data shown on the display

Hi

I have been trying to get a system properly running, however somehow, the direction of energy seems not logical.

Setup :

3 x Quattro 48/15000
1 x Fronius Symo 10 , connected to AC-Out
1x Carlo Gavazzi meter connected to the grid.

The house has critical loads, which are connected to the AC-out, and all other loads are connected to the same place where the AC-in of Quattros are connected.

1st try:
The external meter is configured as grid meter. ESS is configured , Grid metering is selected as the inverter. Excess power is limited to feed-in upto 3000W. Here the sum of energy doesn’t make sense.

2nd try :
the external meter is configured as grid meter. ESS is configured , Grid metering is selected as the External Meter. Feed-in is disabled. Here also the energy sum doesn’t make sens

3rd try :

the external meter is configured as ac meter. ESS is configure , Grid metering is selected as the inverter. Feedin is allowed upto 3000 W , imagining that the other consumers need that. here the sum makes more sense.

However what we want is, that solar can feedin all consumption (critical + normal) and doesn’t feed back to grid anything.

any help would be welcome.




I would be really happy , if someone could give an idea or hint , how to solve this problem .

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Still looking for a solution. Soon I will install a similar system . I need really to know, where I am making it wrong . Is it the wrong meter ? is it the wrong setting. Anyone anywhere any idea, would be gratefull .

maybe the same as here …

thanks I will follow that page in this case, maybe together we find the solution

As it was once said in Command&Conquer Genarals … ‘Together we are strong’ :wink:

I’m curious … a strange case in any case … There’s more going out than coming in … brilliant :slight_smile:

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