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nervousfrog avatar image
nervousfrog asked

Export limitation

Hi,

Thanks in advance for any answers.

I currently have a Multiplus II GX 48/3000 (10.5kw lithium batteries) and 1.85kw of AC coupled solar.

I have a Carlo Gavazzi ET112 monitoring the grid connection and an EM111 monitoring solar production.

1644674229750.png

I want to add some extra solar but my limit would be another 2.15kw unless I use grid limiting.


I don't want to limit the existing solar install at all as it is on a feed-in tariff so I just want to set an export limit on any new panels at 2.15kw.


If I understand my options correctly I could either install a 3kw AC-coupled inverter on the AC-OUT or a DC-coupled inverter of any size?


Will any AC coupled inverter be able to respond to the Multiplus' frequency shifting to limit power output?

If I set the ESS grid feed-in limit to 4kw like so

1644675328894.png

will the Multiplus limit its output on the AC-IN to limit any exported power to the grid at 4kw?

Regards,

Rob.


ESSAC PV Coupling
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1644675328894.png (39.0 KiB)
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1 Answer
Rob Duthie avatar image
Rob Duthie answered ·

Hi

Doesnt always work like that, eveing with the a known brand like Fronius i have used did not limit, so had to set the export limit in the grid tied inverter setting to make it work.

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