Fronius Smart Meter/ Export Limiting

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Fronius Smart Meter/ Export Limiting

Postby 34by151 » Thu Jun 14, 2018 5:17 pm

Im upgrading to a 8kw inverter
I have a 3 phase feed with a single inverter (one phase) and and export limit of 5kw

If I add a single phase Fronius Smart Meter and set the export limit to 5 kw it is clear that my maximum export would be 5kw. This would apply to one phase only

If use the 3 phase meter and set the export limit to 5kw will it be exporting more over time?

Ie
If im consuming 1kw per phase and producing 5kw
Would I be exporting 2kw or 4Kw?

I know with the single phase meter would be exporting 4kw with the above example but im trying to understand how the 3 phase meter reacts when you have 1 inverter

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Re: Fronius Smart Meter/ Export Limiting

Postby Gordon-Loomberah » Thu Jun 14, 2018 5:49 pm

>>If use the 3 phase meter and set the export limit to 5kw

Wouldn't the export limit would be set individually for each phase?
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Re: Fronius Smart Meter/ Export Limiting

Postby 34by151 » Thu Jun 14, 2018 6:03 pm

Its a 3 phase feed with a single phase inverter

So the export limit would be the limit set on the single inverter
What im trying to work out is how that is calculated

Im thinking the export would be lower with the 3 phase meter as opposed to the single phase one as it would be measuring a greater load

Just looking to confirm that

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Re: Fronius Smart Meter/ Export Limiting

Postby Gordon-Loomberah » Thu Jun 14, 2018 6:23 pm

OK, I was thinking you had a 3phase 8kW inverter. However, I still think you would be exporting whatever PV inverter output is left over from your own consumption, up to the 5kW limit on the phase on which you have the inverter.
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Re: Fronius Smart Meter/ Export Limiting

Postby 34by151 » Thu Jun 14, 2018 6:41 pm

Gordon-Loomberah wrote: I still think you would be exporting whatever PV inverter output is left over from your own consumption, up to the 5kW limit on the phase on which you have the inverter.


That is clear the max would be 5kw.

Im assuming export would be lower with a 3 phase meter vs a single phase one as it would be using a higher consumption value.

All depends on how it is calculated which is what im trying to find out.
From what I can see Fronius dont say, just how to connect and setup the meter

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Re: Fronius Smart Meter/ Export Limiting

Postby Privatteer » Sat Jun 16, 2018 5:43 pm

It will be the same. Each calculation is done per phase.

If you have a 3phase feed you would probably be better off having the extra output on another phase covering that load.
Otherwise its likely to spend a fair bit of its time limited when it could be exporting.
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