Victron Multi 2000/80

[Bessy765]

Anyone have one of these?

we have 2 x 100 amp Transporter Lithium. With the Victron Multi 2000/80 It has the facility to reduce the incoming amps supply so if on a site with a low power ehu, you can set it not to trip the supply. It in the charger/inverter mode use the batteries to top up the mains supply during heavy 240 volt use. Still getting used to the system. As our van is kept in our garage at the bottom of our garden the 700 watts of solar are of no advantage. Owing to how the system is monitored it takes app 0.7 amps per hour. No problem as we have mains in the garage. Trying out using my little Honda EU10i if I set the incoming supply to 2 amps the green stays on the low idle setting, but can put in around 30+ amps. what I have found is when using the Genny + the inverter to run the hab air con the display jumps from 2 amps to 4.5 and the Genny run really hard.
this is not about the pros and cons of using a Genny this is just to see if this is correct. The system powers the hab air con on inverter mode fine when not on hook up?

 

[autorouter]

Trying out using my little Honda EU10i if I set the incoming supply to 2 amps the green stays on the low idle setting, but can put in around 30+ amps. what I have found is when using the Genny + the inverter to run the hab air con the display jumps from 2 amps to 4.5 and the Genny run really hard.

I'm not sure where you get the '30+ amps' figure from.The generator you mention is a 1000W, so at 4.5A (4.5 x 240 = 1080W) it is running at full power, which is why it sounds like it is running really hard. On the question of why, I'm not sure, especially if the aircon normally works OK from the Multiplus when not on hookup. I would expect the Multiplus to limit its input from the hookup to 2A, and make up the rest by taking power from the batteries.

I have a Multiplus 3000, and when I have set the hookup limit to 5A it doesn't take more than that, even when I switch on over 2800W of appliances (for test purposes, of course).

Edit: I've noticed that the minimum setting for Power Assist on my Multiplus 3000 is 4A. I don't know what it is for your Multiplus 2000, but maybe that's the reason.

 

[Bessy765]

Thank you for your reply, the 30+ amps is what the Victron will charge my batteries at when the Honds is running at its idling speed when the mains input is limited to 2 amps and the Victron is set to either charger only or inverter/charger with no 240 volt demand. If I increase the incoming mains to 3 amps the Genny runs higher and at 4 amps it has reached its output and runs flat out. I just wondered why when the mains incoming is set to 2 amps. And when using the power share to run the air con the incoming amps jumps to 4.5.

 

[Raul]

I have the same inverter, and minimum limit for power control is 4,5A ac. I never managed to go down to 3A limit. When you run air con, it may surge and don’t like it being limited that low. That would mean super low power control, and max power assist. These two combo ( low-high) don’t work, is one or the other, or raise power control. You will find this documented in multiplus manual.
Just a note, I set mine via touch screen and run last year firmware.

 

[peterc10]

I think there is some confusion. The 30 amps from the Victron is at nominal 12v, so the power going in is about 360 Watts. The 2 amps at the hookup is at 230v, so the power going in is about 460 Watts.

Or have I misunderstood something?

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[eddie]

We often have to play around with the Victron software when a generator is involved, as the Victron is such a clever bit of kit, using the shore assist function it may not like the voltage or frequency provided by the Honda inverter

From memory we have set the Victron up allow a wider frequency harmonisation

 

[autorouter]

I think there is some confusion. The 30 amps from the Victron is at nominal 12v, so the power going in is about 360 Watts. The 2 amps at the hookup is at 230v, so the power going in is about 460 Watts.

Or have I misunderstood something?

That's correct. That means there is no more than 100 watts available to power mains devices. If more than 100 watts is demanded, then there's a two-step process. First, the Multiplus will scale back the charging, to zero if necessary. If that's still not enough, it will take power from the batteries to generate enough power from the inverter to make up the difference. Victron call these two steps Power Control and Power Assist.

The OP stated that the aircon runs OK when not on hookup, so there is no overloading of the inverter.

 

[Raul]

It could be as Eddy says, to enter in power assist, it needs to accept the genny distortion. Wide AC input needs ticking and wider frequency. That’s with the mk3 doable. The power control can be limited by dongle or any hub display. Mine does work in power assist, it does make extra power from batteries if grid is limited. It may be the type of load that does not give enough time for the multi to react, or, it could be a battery supply resistance issue. Therefore, not being able to take from battery quick enough, it will try to take more from grid. When I run genny, always I limit power control a tad under the genny output. I use inverter generator it’s more stable in voltage and frequency. It only revs up with power demand, but output voltage stays the same.