Good morning,
We want to build several holiday houses, each with a multi running in stand alone.
Is it possible to run 3 or more multi's on completely separate phases and neutrals in and out and use one GX device to monitor those?
Or does each multi needs a GX?
This while there is no option in BUS for that, or parallel or 3 phase.
With the very best regards, Jeroen.
@VRM, www.quintacasadafonte.com.
Guessing there's no central point where you could have 3 multi's connected in three phase one large battery and then run each phase to the houses from that central point?
Or even if you run 4 cores to each house. The grid L1, N on 2 cores to the central point and the other 2 cores are the output from multi 1. If the grid isn't at the central location. This is assuming that each house is definitely on different phases
Otherwise I'm not aware of a solution of connecting the three without using then parallel/three phase mode.
You could maybe go all out DIY. Where each system has it's own GX device. Then you run another gx device connected to nothing but has lots of virtual devices added via custom drivers. And have scripts reads all the data from other 3 GX devices and adds them together then inputs that into the central running GX device (the gx isn't connected to any real devices but virtually made via custom drivers). Bit of a project that but would be doable.
If you just want the data centrally then you could store it in Grafana, might be easier but controlling all three in a central remote location might be more of a challenge.
I asume, every holiday home has its own battery right?
Every home would need its own Inverter/charge WITH GX, hence something like the EasySolar.
I have installed the same in Estonia in two places. However, we use additional 3 Quatro 48/15000 (with a 200kWh Battery Bank) between the Grid and the Camping installation.
No feedback into the Grid, but surplus energy from the EasySolar are feeded back to the Quatro.
This provide even in Estonia so much energy, that since last year they had not to pay a singel cent to the energy provider between March and November (holiday season is more or less from end of April to mid of October). In end of the last year, ALL (acid) batteries where 100% full.
Good afternoon,
Thanks for the reaction, we thought the same, we just had a meeting, to complex to do it all separate.
We'll do a 3 phase at a central point, 1 big single battery (or several small ones) with BMV's or BMS, 3 Multis, 1 Symo, and a Cerbo.
From there we just have to lay some seperate cables to the houses like in a street.
The only question remains not to connect the inverters output Neutrals together in the central point, so that each inverter "stands alone" at the output in battery mode and can be fused separately as well.
When the grid is used, of course all the Neutrals are connected together at the inputs of the inverters, also with the system bypass switch (HIM406) in case of emergency and/or during maintenance.
Basically the same as my farm, see below.
With the very best regards, Jeroen.
https://vrm.victronenergy.com/installation/48664/dashboard, www.quintacasadafonte.com
