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asimko avatar image
asimko asked

Problem setting up wanted configuration

Hello,

I have 3 MultiPlus-II 48/3000/35-32 with firmware 477 and identifification 2629

BYD Premium LV battery

5kW in panels and smartsolar mppt

and not allowed to feedback in grid.


I was trying to setup 3-phase system, connected to grid only on demand of higher loads or battery less than 30%.

I already tried virtual switch, with only one value of higher load than a number, but it was not connecting to grid, but because of higher load, system was shutting down.


I tried HUB-1 but again, without success, it is only in mode only charger, I dont why, here is the setup:hub1.png

I tried also this:

https://www.victronenergy.com/live/assistants:ignore_ac_input_using_the_generator_assistant

and this:

https://www.victronenergy.com/live/assistants:overview_of_available_assistants#deprecated_self-consumption_hub-2_v3_-_for_ac-coupled_systems

Non of these was doing what I expected.

I dont know what else to try. I have 2 other installation working correctly but with older CPUs and firmware on multiplus with HUB-1 assistant ...


Thank you for any suggestion


Multiplus-II
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1 Answer
Alexandra avatar image
Alexandra answered ·

@asimko@kits.sk

Not sure if you have decent contactors available to you, but you can also use the gx relay with generator setup and contactors to disconnect grid as needed.

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asimko avatar image asimko commented ·

Ok lets say that is a option,but this installation is far from me, and i have 2 identical installations but with older multis and now it does not work? there must be a setup alternative or isnt it? with newer firmware i cannot do what i was able before?

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Alexandra avatar image Alexandra ♦ asimko commented ·

@asimko@kits.sk

The HUBs are stated as depreciated. There must be a good reason for it.

What exactly is not working for you?

What are you trying to achieve? The 70AH of battery seems a bit small for this setup as well. that will be adding to the complications.

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asimko avatar image asimko Alexandra ♦ commented ·
Yes battery is small,but will be upgraded in future.


I want have 3 phase system running offgrid, but in empty battery or high load will connect to grid, that is all, with no excess in grid even in battery full.

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