phineas Posted September 11, 2020 Posted September 11, 2020 Good evening I'm new to the blog so wanted to ask question! I have installed 2×solar 365w,1×3.5kva hybrid inverter 4000w also 2 ×200ah 12v deep cycle batteries in series. I have problem with Solar not charging my batteries or it because I need to add solar system till I reach 4000w of inverter which is 450vdc? Im asking for help because it only charges with ac 230 input Quote
gooseberry Posted September 12, 2020 Posted September 12, 2020 If you have an Axpert or clone with the 450V rated MPPT you need at least 120VDC on the solar input or about 4 panels in series. Quote
phineas Posted September 12, 2020 Author Posted September 12, 2020 Thanks a lot which means Atleast 4×365w solar as minimum voltage ac then it will charge? Quote
phineas Posted September 12, 2020 Author Posted September 12, 2020 Here is the Pic it says nominal 240vdc Quote
Louisvdw Posted September 12, 2020 Posted September 12, 2020 The MPPT Voltage is the voltage that your Solar panels should be. It will start charging if the panels voltage go about 120V. Those 365W panels should be around 40V per panel, so it will start to charge with 3 panels in series, but 4 would be better. You can add up to 10 of that size in series Quote
Coulomb Posted September 13, 2020 Posted September 13, 2020 On 2020/09/12 at 7:18 PM, phineas said: Here is the Pic it says nominal 240vdc I wonder what that actually means. Perhaps that's the preferred input voltage, where the efficiency is highest. The higher voltage SCC models do seem to start PV production at 120 V, and give up altogether at 110 V. At the high end, they stop MPPT at 430 V, and give up entirely at 450 V. Quote
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