HI Ray, Can you tell me/us where you have your data on the a-Si having higher voltage degradation over time?
thanks jay On Sun, May 31, 2015 at 11:31 AM, Ray Walters <r...@solarray.com> wrote: > Yes, amorphous modules degrade faster then crystalline cells. 15 years > will really start catching up with you, that's why we always tried to stick > to monocrystalline when we could. > I think your best option for now is to rewire the array for much higher > voltage. Even your current voltage problem aside, the system will run more > efficiently at higher voltage: Less current = less voltage drop. I would > probably just jump the 4 module sets in series in the combiner box to 8 in > series. Should be a quick fix, and really show an improvement. I've seen > this same issue with low voltage polys and undersized wiring. Usually the > MPP controllers like some room to play with; as soon as the MPP voltage > gets close to or less than battery voltage, the current drops off > substantially. > > > > > R.Ray Walters > CTO, Solarray, Inc > Nabcep Certified PV Installer, > Licensed Master Electrician > Solar Design Engineer303 505-8760 > > Jay Peltz Peltz Power jay.pe...@gmail.com
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