Multiplus AC in

That is interesting but let me clarify that I am using the generator function to charge from the grid.
Having said so the inverter would not be any wiser so I see your point, however this happens before the generator activation from Cerbo kicks in so it cannot be related to that.
This is purely an absorption by the Multiplus that occurs the moment AC-in is present, even with the AC-in ignore function being active.
So, the problem is located between the Ac source and the Multi AC-in and that is a basic 10mm cable of just over 1 meter in length (live and neutral controlled by an external relay), nothing else.
I have disconnected all Multiplus AC-out just to verify that nothing was flowing out when AC-in was present but nothing changes, the 0.3 to 0.4A consumption is always there if AC-In is physically connected.
We need a Victron engineer to come in and tell us whether the AC-Ignore function still allows some current to pass through and what for.:thinking:

A 220V DC coil control supply (also known as a contactor or a relay) typically has an inrush power consumption of 19W and a hold-in power consumption of 7.4W which equates to 0.032W.
Can you all see my point now?

Looking at the data sheet for my inverters, it says it draws 20 watts at idle under 0 load.

I originally read that to mean from the batteries, but maybe it’s bringing it in from the grid and inverting for its own standby power.

Is this with ACin Ignored?

There’s nothing to indicate one way or the other in what I read, just adding a data point.

We all have that minimum consumption no matter if the inverter is drawing from the grid or from the battery pack

What I meant is, did you specifically add an assistant to ignore the ACin?

It seems like you are grid-connected all the time, in which case if the AC is present, the inverter will stop inverting and use that source, ignoring the batteries.
In my case, the inverter is always driven by the batteries so no absorption is supposed to be required by the inverter from the AC line in, only when I allow current to pass through.

So the problem is, where is the 0.4 Amps going?

Hi everyone, this topic is extremely interesting to me as I’m facing the exact same issue. I have a three-phase system with 3 MultiPlus II 5000/48-70 units. Like you, I noticed the same no-load consumption when the AC input is open and set to ā€œIgnore ACā€ mode.

I realized this by checking my Linky meter (I live in France), and to my great surprise the meter permanently shows between 100 and 110 VA of apparent power being drawn. Looking at the details on the meter, I can see that each MultiPlus consumes between 32 and 36 VA continuously, despite being in ā€œIgnore ACā€ mode.

This is very annoying because it forces me to add an external power relay, which I had not planned initially. Do you have any additional information on this subject?

In my case, it turned out that the British Gas electric consumption monitor was badly calibrated ando ipersensitive to micro currents. After introducing a more modern one, the problem disappeared.