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Consumption readings not accurate - AC coupled system

Hi there Guys

I have an off grid system.

With a Quatro 8 kW and MPPT on the shed.

and a AC coupled fronius inverter on a house sub board 20 meters from the shed.

It seems that the consumption monitoring on VRM is not showing the gross consumption of the loads. Just the net. (after the fronius inverter has fed the load at the house).

Do I have to install a meter at the house sub board where the fronius inverter is to get a more accurate reading?.

Thanks for your help in advance

[image]

Regards Alex



Alex Manley asked
Alex Manley answered ·

2 Answers

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I see all the metrics, it is working as expected. But with this setup, can one ascertain how long the batteries will last until the battery disconnect kicks in? For example, I have the furnace on, the refrigerator on. I should be able to see the Amp Hours being sucked away from the batteries. But what I don't know is how long the batteries will continue to feed that load, before being shut down when it reaches the 50% threshold. Kind of like a reading that says "estimated time remaining".

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thomas-pv asked
thomas-pv answered ·

2 Answers

Monitoring Fronius
Bonjour,
Sur une propriété il y a deux annexes sur lesquels il y a deux installations Fronius Primo en autoconsommation, elles sont raccordées respectivement à un sous tableau dans chaque annexe qui alimente aussi quelques petits et gros consommables.
Ces deux annexes sont raccordées au tableau principal et tout va pour le mieux.
Le but est de passer en ESS, avec comme local technique l'endroit où est le tableau principal, les deux annexes seront raccordées en couplage AC-Out et le Multiplus pourra gérer tout ça.
Mon questionnement ce porte sur le monitoring, les annexes sont respectivement à 18m et 50m et quelques murs à traverser.
Es ce qu'une communication wifi entre les Fronius et un CERBO sera suffisant et fiable pour un monitoring juste, sachant que l'énergie arrivant en AC-out dans le Multiplus sera inférieure de celle produite et transmise par les Fronius ?
Ou ne faudrait-il pas plutôt utiliser deux ET112 mesurant directement les Fronius, avec les convertisseurs Zigbee USB et RS485 pour la communication avec le CERBO et donc le VRM.
D'avance merci, si vous avez une expérience sur ce sujet.
Bien cordialement, Jean luc

Metraz Jean luc asked
Metraz Jean luc commented ·

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it consist of:

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Will I be able to perform the same configuration of the Multiplus over the Cerbo bluetooth connection as I would with the VE Bus Smart Dongle?


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marc-1 commented ·

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Regards,

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