We have recently upgraded to a new Multiplus 15000 and installed the latest firmware. Please see the photo below showing the Victron/Pylontech setup.
Grid1.jpg shows that when the EV Charger is set at 16A or above, the Inverter is pulling >800W+ from the grid.
Grid2.jpg shows that when the EV Charger is set at 14A, the inverter is at the target set point pulling 50W from the grid and behaving correctly.
Why is it that when the EV Charger is set at 16A or above the inverter starts pulling >800W+ from the grid? This never used to be the case with the 10000 Multiplus that we replaced, which was on an older 508 firmware.
iirc G98 limits the inverter to 16A, which is pretty much the EVCS load, the balance is being supplemented from grid.
Hopefully I haven’t misunderstood the limit.
This was an explanation I received from my sales manager when the G98 and G99 was split.
“All models that are 5KVa and above, when g98 is selected will allow 3.68kw max output and feedin The 5KVa should be a good seller. When g100/2 is completed the g99 can be selected”
Thanks, but we have never exported to the Grid. We have usable home battery storage of 35kw/hr (leaving a 25% margin). Between April and September we pull in up to 12.5kW/hr from 40 no (East, South and West facing solar panels ). In addition to home storage we have 3 EV’s. The project was motivated in an attempt to help save the planet. If the Grid propose limiting what we can draw from the Grid overnight in the Winter we will have to buy a gas generator and disconnect from the Grid altogether. Upgrading to a 3-Phase supply is too expensive here.
This is the problem.
You will need to either go off grid or try qualify for a rest restrictive code, if that is an option.
There have been a few topics on this over the years.
The problem lies with the interpretation of the regulations which were introduced when large numbers of diesel generators were installed to run in parallel with the grid. Much of this was for peak shaving. At that time there was no approval process for generator synchronising equipment. Some of these diesel generators had rather dodgy synchronising equipment.
With the subsequent development of solar PV the problem had the potential to get worse.
Ideally the regulations should change to accommodate solar PV inverters that are designed in such a way that they can NOT ever export to the grid!
Technically that is not a problem but regulations are frequently immovable and not neccessarily logical.
A simple way to overcome this is NOT to connect the AC input of the inverters to the grid but instead to use a separate AC battery charger. This unfortunately adds cost.
