[RE-wrenches] strings of older solar panels
David Katz
dkatz at aeesolar.com
Wed Nov 18 13:27:56 PST 2009
Lee
I would be inclined to use groups of 4 modules wired for 24 volts
connected to an Enphase inverter. This will give you less problem with
mismatch loss. 256 watts is high but they are probably a bit lower in
output that that.
David
David Katz
Chief Technical Officer
AEE Solar
1155 Redway Drive
P.O. Box 339
Redway, CA 95560
Tel (707) 825-1200
Fax (707) 825-1202
dkatz at aeesolar.com <mailto:david at aeesolar.com>
www.aeesolar.com <http://www.aeesolar.com/>
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Solar Plexus wrote:
> Hi Wrenches.
>
> I have a customer with 32 of the Solarex MSX-64 solar panels an a
> battery-based system. He wants to go batteryless inverter. So I am
> looking at 2 strings of 16 in series. But the solar panel spec
> sheet doesn't say anything about system voltage rating. Can I do this?
> If one solar panel in the string is shaded, does it see the full
> string voltage of around 280 volts? Is there something in the way new
> panels are made that makes them more able to handle this voltage, or
> is it just that they are now tested for it?
> My guess is this request may be happenning a fair amount. Is there a
> reason these panels are not listed on the California GoSolr website?
>
> Lee Tavenner
> Solar Plexus
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