Hi,
I would like to expand my current installation and have a few issues with that.
My current installation:
- 3x MP-II 48/3000
- MPPT 150/100
- 12 x 450 Wp panels
- 3x Pylontech US3000
- Cerbo GX
I would like to expnad the installation by this:
- 4x 450 Wp panels
- MPPT 150/45
- 6x 450 Wp panels
- MPPT 150/60
- Pylontech US5000
The thing I don’t understand well is that now the pynlontech batteries have Charging/discharging current 3x37 = 111 A and the MPPT provide max 100 A, so everything is ok now.
When I expand the installation, I would have MPPTs with max total current of 205 A and the batteries with “only” 196 A charge/discharged current.
Since I have the Grid feed-in on, because I’m sharing the surplus PV energy with my brother and parents, the DVCC charging limit is ignored according to manual. I don’t understand why that is? Why is it ignored?
I still expect that the system will never reach the max current of 205 A since the panels will be oriented in different directions:
- MPPT 150/100 - 12 panels - SW (25°)
- MPPT 150/60 - 6 panels - SW (5°)
- MPPT 150/45 - 4 panels - SE (30°)
What do you think? Is it ok? I don’t want to buy another battery (since they are a bit expensive) and I don’t really need them.
Thanks,
Jakub