VICTRON - limiting the charging current of Pylontech

Q&A and troubleshooting
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1

Hello,
how can I limit the charging current of Pylontech 4x US3000C (14kWh) in Victron system (currently 6kWp, I want to expand panels to 16kWp to cover autumn and winter)?
I have 2x MPPT250V/60A Victron (would be expaded to 6x MPPT250V/60A), Cerbo, 3x MPII 3000VA .
Setting in DVCC is not working - I set it to 70A, but the current often exceeds 100A.
Apparently, this is because the current limitation in DVCC does not work for some reason if I have overflows (export to grid) enabled - stupid limitation.
I don’t have Smartshunt or Lynx, but if the costs were reasonable, I might consider purchasing them (I haven’t studied the wiring).
I’m asking because I would like to significantly expand the panels (to about 16kWp) and I suspect that the batteries would suffer a lot…? (300A in total. Not to mention that I don’t have proper wiring or the fuses, of course).

Schematic:

Thanks

2

4x US3000 = 148A max charge current.

The limitation of the charge current at the GX device should work.

Pylontech are manged batteries, you don´t need a smart shunt.

See Victron & Pylontech UP2500, US2000, US3000, US2000C, US3000C, US5000, US5000B, UF5000, Pelio-L, UP5000, Phantom-S, Force-L1 & L2 [Victron Energy] for correct setting

3

limitation in DVCC in GX does not work (in case of export to grid). I did set it manually to 70A. But I can see 130A on sunny day going into the battery.

_dvcc
_dvcc793×190 30.5 KB

And do those MPPT controllers observe the CCL limit (in the battery’s “Parameters” screen)? Mine is set to 0.5C = 148A. That should be enough for me…
Since I don’t have many panels yet, I can’t test it…