solarvic wrote: »
Why don,t you try 11 panels and see if you still get 1800 watt output? Another suggestion, Did you use heavy enough wire from panels to inverter and what is the length from panels to inverter? If you have too small of a wire you would lose some voltage. Maybe you needed all the 12 panels to overcome the voltage drop. I know some people are parinoid about putting thier location on thier particulars but it would make it easier about trying to give them advice. Temperatures and location give posters more info to help diagnose thier problems. What might be right for my location would be altogether than someone living in Florida, Per Say. If you livedSomewhere like in Canada where they might get -40F 12 panels mght be too much but if you lived in Florida you might need all 12 panels just to get your inverter to work. :Dsolarvic:D
davidwillis wrote: »
I hooked up all my solar panels (a total of 12). I was planning on using 4 of them for battery charging for another project. With 12 I have not seen it shut off at all, and the voltage is around 350 or so. It goes up to 15 amps output even when cloudy, but I feel like I am not utilizing my panels very well (almost 2700W of solar panels only putting out 1.8kw).
So I guess this was the problem, but it doesn't make sense to me that the inverter won't just work at any voltage over 200. It should say you need 300-600VDC, not 200-600VDC.
westbranch wrote: »
OK lets do some rough arithmetic:
1800W / 15 A = 120V on the output, (good) so now 1800W / 350V = ~ 5.1A Very poor
and 350V / 12 panels = 29V per panel ( good)
5.1A / 12 panels = 0.425 A per Panel ( NOT good)
from previous posts (SVic) the panels are ~220W rating / 29 V = ~7.6A per panel
So you are losing ~ 7 amps per panel.... IMHO it is a wire size/distance issue or a bad wire connection somewhere ...
davidwillis wrote: »
with hot days, I have been having more problems. I increased to 12 panels, but even with that I would come home to check on the inverter and it would be off, blinking the code for solar array voltage out of range. I don't know why it wouldn't start back up again, and when I checked the voltage was over 400vDC. So I contacted xlgt again, and they are sending me a new inverter. They say the did firmware updates that should fix my problems. I am impressed that they would send me a new unit, but I really hope it fixes this. I will update again when I get the new unit installed.
Dusty wrote: »
So, did the new inverter solve the problem??? Hope so!