Hi, until 2 weeks ago I've not any problem with my installation (has been working without problems for the last 9 months).
2 multiplus II 3000 in parallel
Cerbo GX
Smartshunt
150/35 mppt with 2s2p 550w panels, with VOC of 98v.
2s2p id3 8s lithium batteries.
2 jk BMS, but not connected to the cerbo
This is an off-grid system, configured at 64v fully charged
2 weeks ago I added a second mppt with another 4 solar panels, the same that the first one, same mppt, same panels, same everything. But since then, the system is restarting everytime there is sun and charging, not when is cloudy. Both mppts have the same settings, id3 lithium config settings from the menu
All the mppt and smartshunt are connected with ve.direct cables to the cerbo gx,, smart network is not active, the 2 multiplus are connected to cerbo gx with ve.can.
I tried DVCC, I tried smart network, disconnecting ve.direct cables, but anyway the system keeps restarting because voltage spikes in the victron system, but there are not spikes in the jk BMS.
When I disconnect one mppt, there is not problem, any of the 2, it doesn't matter which one, but both can't work together.
Here is a picture of my installation.
And here are 2 videos, the first one is with one mppt active, everything perfect.
https://drive.google.com/file/d/1AfVl0nqZ48t8Nje-whcxFKndjXMuDLlV/view?usp=drivesdk
And in the second one, I turn on the second mppt, the smartshunt voltage spikes till 69.99v and all the voltages are different
https://drive.google.com/file/d/1AllxBzATWsbTeePjXjAiCE7g-Gsk4p3W/view?usp=drivesdk
What is the problem here? or how can I solve it? thanks in advance.
