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donnib avatar image
donnib asked

LOM detection when feed-in disabled why ?

Hi,

I read https://www.victronenergy.com/live/ve.bus:grid-codes-and-loss-of-mains-detection :

Q4: I use ESS, but have disabled feed-back, is a grid-code still required?
A: Yes, also in this case LOM is required to make for a safe and also local regulations compliant system. Running ESS with disabled-feed-back is still not the same as using a Multi in its default configuration without ESS.

I don't understand why do i need LOM for this ? Can somebody explain ? I want to make an off-grid solar system (using Multiplus II and SmartSolar and Venus GX) and ONLY pull from the grid in case i don't have solar/battery.

/donnib

Multiplus-II
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2 Answers
Murray van Graan avatar image
Murray van Graan answered ·

In a case like this, instead of ESS rather look at using dedicated ignore AC input, or the generator assistant to control when you want to use AC.

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donnib avatar image donnib commented ·

@Murray van Graan thank you. What do you mean by ignore AC input? How would one doar that ?

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Murray van Graan avatar image Murray van Graan donnib commented ·

In ve.config is a page called virtual switch, where you could set up ignore ac input using battery SOC, battery voltage or load Values to determine when to use the ac input and when to ignore it.

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lyric avatar image
lyric answered ·

Did you ever build/set-up a system using the multiplus-ii in Denmark? I am reading up on this and have a similar wish as you.

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donnib avatar image donnib commented ·
Yes i did, my system runs for quite some time in DK
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peter-popaleny avatar image peter-popaleny donnib commented ·

Hello Mate,

I would like to do exactly same as you:” ONLY pull from the grid in case i don't have solar/battery”

Can you advice your solution, please?

thanks a lot, Peter

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