<div dir="ltr">HI Ray,<div><br></div><div>Can you tell me/us where you have your data on the a-Si having higher voltage degradation over time?</div><div><br></div><div>thanks</div><div>jay</div><div><br></div><div><br></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, May 31, 2015 at 11:31 AM, Ray Walters <span dir="ltr"><<a href="mailto:ray@solarray.com" target="_blank">ray@solarray.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
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. <br>
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. <br>
<br><br>
<br>
<br>
<pre cols="72">R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
<a href="tel:303%20505-8760" value="+13035058760" target="_blank">303 505-8760</a></pre>
<blockquote type="cite"><pre></pre></blockquote></div></blockquote></div><br><div class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>Jay Peltz<br>Peltz Power<br><a href="mailto:jay.peltz@gmail.com" target="_blank">jay.peltz@gmail.com</a></div></div></div></div></div>
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