I guess @plonkster prediction came true for me. Not because of the Sunsynk failing though but rather because I’m getting a hand-me-down from Bro.
I currently have 2x Sunsynk 5kw inverters coupled with about 42 kWh of pylontech
Have 4 strings of panels as follows with only a west facing tile roof. Other panels are mounted on the wall on brackets.
East 8x420 Canadian poly. 3360w
West top 8x390 JA 3120w
North 9x460w jinko 4140w
West down 8x360w Canadian 2880w
Total 13500w
As panels are dirt cheap now, I plan to change the 2 west strings and the east string and maybe add another 5 panels on a separate north tilted string on the tile roof. My current north string is on 2 different sections, 1 4 panels and the other 5 and have Tigo optimizers on them due to shading. At different times of the day. .
Bro currently has 3x 10kva quatro together in 3 phase with pylontech and he is changing to sigen.
He didn’t have any panels on his Victron. I will get 2 of the quatros together with the gx.
What else do I need to replace the Sunsynks? What’s the advantage / disadvantages of dc vs ac coupled. I was thinking of adding both.
For DC, the RS mppt look nice and I wouldn’t need t split my strings but they are also expensive.
For AC coupling, what’s the best option.
With the pending Eskom registrations / disconnections / fines, I’m also thinking about a full off grid system together with a generator. For most Sept 24 - May 25, I hardly used any Eskom. Winter heating is always a problem but I’m experimenting with a water to air heating system. Heat water during the day and then use that for space heating at night. If it works then freezing water in summer days and using it for cooling also becomes an option.
So firstly, what’s the best options to complete my migration to Victron and what should I look out for.
