Hello, Have used some Victron products (camper van etc) I am now installing 10Kw Solar (20 Panels 500w and would like min 8-10 Kw AC output. peek
Am thinking MP2 8KW + 2 x MPPT Smart Solar 250/70 (using the MPPT calc) or 100. Does this make sense. I dont particularly need the AC input but maybe in the winter sometimes.
I am comparing this setup cost with a stand alone system as I would prefer to use Victron.
If you are installing solar take a look at having 2 multi rs inverters. The mp2 8kva only has 6400 inverter power. Whereas 2 multi rs inverters will have about 10,8kva and have 4x3kw mppt charge controllers
Hi Lars, thanks will look at that.
ok I looked at the RS and think having a backup AC supply (Grid or Gen) is a useful option.
I will probably go for MP2 10Kva + 2 MPPT 250/85 or 100
BTW I Looked again at the RS Multi, unless I am mistaken you cannot use 2 in Parallel.
Heey Simon,
The MP2 8KVA can only do about 6,4KW so if you are looking for 10kW peak you would need atleast multiple MP2s aswell:/
I know that because i have the exact same myself.
I’m not entirely sure if they can be used in parallel when using an external transfer switch or perhaps boosting eachtoher. (instead of hanging them parallel, hanging them in series)
The Multirs has the exact same connections as a mp2(without the mppt offcourse). The multirs also has an ACin. So that is not neccesarily true.
Hi Lars, I will probably go for the MP2 10KW version its only a few hundred euro more than the 8kw I like the RS Multi but its says no parallel operation in the data sheet, and 2x is more expensive that MP2 + 2x MPPT. Its a shame Victron dont have an Easy Solar with a bit more Power..
Yeah fully agree, allthough i do think they know most customers buy their other products anway. Where do you live?
In france
The only problem i foresee is that if at some point when your battery is full, your mppt will have more power than your multiplus can handle, this will not break anything. But if in some scenario you would want to sell your power, you would have to do this during the night/or when energy prices are high. (or increase your selfconsumption on the dc side) As your 10kwp solar will get dump more power in your batteries than your 10kva (can do about 8kw after losses and suck up about 9kw) Victron could unload onto the grid. Or alternatively not use all power your solar can provide.
In that Case I can always add a second MP2 its unlikely with 10Kw Solar panels i would get 100% output. Also the MPPT should go into float mode when the battery’s are fully charged right?
I think your setup will be fine with a mp2 10kva, just keep in mind that your mp2 can only invert 8kw of electricity to the grid. You can not put MP2’s in parellel above the 5kva model. Then you require an external transfer switch.
In case you want flexibility maybe opt for 2x 5kva mp2 inverters. It will roughly give you the same specifications but then you could hang a third mp2 with relative easy.
that an interesting option as MP2 5K GX would save on the cost of the GX, presumably I would only need one with GX so would in fact be less than mp2 10k+GX, need to check on the GX side
actually better to use external GX and 2 MP2 5000 seems a good option which is slightly cheaper and can be easily expanded.
The dutch distributor I asked a similar question advised me to buy the 2(GX) devices seperate. They told me that in most situations, when something breaks, doesnt function etc, for trouble shooting. It is easier to have 2 seperate things. as opposed to have them integrated.
In the Netherlands(where i live) the MP2 5kva is about 750 euros including tax. Whereas the 10kva is 1676 including tax. I’ve looked in the specifications of the multiplus and there is no reason not to split the 2 units up. Idle consumption is just as high or slightly lower for 2 seperate units. max power is the same or slightly higher for 40 degrees. The only inconvenience will be setting up both units. Mounting on the wall might require a bit more space and you will require a bit more data cables and power cables. Once running I assume this option to be better, especially for expanding. Alternatively you could turn one of them off during periods of low consumption to save on idle consumption. (idle consumption is about 18W, for a period of 24H this is 0,42KWH) This doesn’t sound like much but during the Winter for 1x 10kva (38*24 = 0,912kwh) and for 2x 5kva it is 0,864KWH) Every single day for just keeping them online
ok seems a good idea the prices are similar here in France, I have plenty of space and I like the idea of having sperate units (as we say in English dont put all your eggs in one Basket)
Exactly! I would love to hear from your progress and I would love to see your final results:)
I run an 8kva because we have a 1phase 32A grid connection. We have a 5kw Solar Edge inverter, with 7,81kwp of panels with each their own optimizer. With 45kwh of batteries to store an entire day worth of solar! Idk if you plan on using DESS. But over here it works like a charm:)
We use about 20% for emergencies and use the rest for trading.
I hope it will work just as well for you, your setup will def be better as you won’t be wasting any solar energy first converting it to Ac to then convert it back to dc to put it in the battery:)
you can also mix AC and DC-coupling.
Use an MP2 10k, one Victron MPPT like the RS450/100 and an PV inverter like Fronius Primo ~5K.
Than you can use you AC-PV with manageable loads with highest efficiency around 95-98%, while the MPPT charges your battery with 98% efficiency for the night.
The MP2 will transfer the power amount your loads, AC-PV, DC-PV and battery. Works like a charm.
I have grid parallel 3-phase 3x MP2 5K, one MPPT 150/45 (4x450Wp) for black start and 5 micro inverter Hoymiles HMS-2000-4t/1000-2t (16x450Wp) due to difficult shadow situation. Each PV panel has own AC-MPPT. Works very well.
Hi Bjorn, actually currently I have a 2000 Hoymiles for auto consumption. yes it easy to use with the 4 MPPT. is the excess fed back into the grid, it seems Hoymiles only supports that and you cannot do 0 injection with it unlike some other hybrids.