I my Farm Off-the-Grid with 24V (80%) and 230V (MultiPlus-II 24/5000). On my Farm I do not need a 3-Phase installation, because the only 400V/3kW motor (circulation pump for my pond) can run from a frequency inverter and I have the possibility to regulate the speed/flow.
This year I have to add two new MultiPlus-Ii in paralle to it to get 12kW/15kVA.
However, my question is:
Why is there a Quattro-II 24/8000 but no MultiPlus-Ii?
And when will Victron provide the nee design for the Quattros?
Quattro 2 is only available in 5kVA, The original Quattro lists a 24V variant, but that is an older design.
Lower voltages are typically not supported on higher power systems due to cabling constraints.
Since the Q2 has more DNA in common with the MP2, that is likely why neither will see 24V beyond 5kVA systems.
The community can’t really advise on product roadmaps and plans, as per our guidelines those aren’t typically discussed here. Victron shares them in other ways.
The 4 Battery sets SOPzS could be configured as 48V, but I would need for the whole farm a changement which exceeds around 25.000€.
LED Lights, DC Motors (250-5500W), Fridges/Freezer (they run all with Danfoss BD35F, BD50F, BD80F and the BD350GH Twin and changing only this, would cost around 5000€)
My Servers and PCs are 24V too and there is no option to run it from 48V, because my Intranetserver require already up to 600W if use to the max (i use it to compile software automated).
Also my 24V/5kW Diesel Generator would need to be changed (e.G. Pramac P7500i on ACin of the MultiPlus-II. But it is 2800€ and only Bensin98. Have not found a +6kW Inverter-Generator for Diesel yet.
I have a 24V/12kW motor with a hydraulik pump for my WoodChopper and WoodChipper. Two Battery Sets (=1470Ah) are not enough for it.
On the other side, 48V with only 735Ah are not enough fir a 7kW EV Charger. My UAZ3303 had 62kWh of LiFePO4 Batteries and I can charge the EV only with 7kW (required 2nd MultiPlus-II this year) if my 3 SmartSolar are charging.
The other problem is, that I would need too many Orion-Tr Smart 48/24-16A (380W), to be more precise at least 6.
Oh, I have tried to use the 62kW LiFePO4 (4 sets of 2p 304Ah EVE cells) in my system and each with a 500A BMS, but the peakloads has trigered several times a total shutdown.
One option would be, that I install 62-124kWh of LiFePO4 batteries in 48V and use them exclusively for the MultiPlus/Quattro Inverter, use 2 SmartSolar for the SOPzS Batteries and 2 SmartSolar plus 2 Fronius Primo 6kW for the LiFePO4 Batteries. And as a backup 2-3 Orion-Tr Smart 48/24-16A.
Then all heavy 24V loads can stay on the much more robust SOPzS Batteries which support without any question 2000A loads.
But this would be a major changement in my PowerStation
I don’t think a star/delta starter would work.
A motor needs around 4-8 times the normal current to start.
We usually install a 3kVA Multi to safely start a 1kW cooling compressor with softstarter.
A good softstarter with a slow ramp up could work but that’s not always possible depending on what the motor is actually doing.
And what if there are already other loads running? Maybe 1 or 2kW on each phase?