You would get more output for less money if you add an additional module to each string and keep the old inverter, than if you bought a new inverter. David Katz
Sent from my iPhone On Jul 12, 2013, at 4:27 PM, "August Goers" <aug...@luminalt.com<mailto:aug...@luminalt.com>> wrote: Hi Wrenches, I have a client with a small system consisting of 6 SunPower 230s and a SMA SB 3000. Anyway, he wants to add another 6 modules but the closest we can get from SunPower these days is a 245. The new six modules would go on a second string. Do you think that the slight difference in tracking voltage and current will be significant enough to justify the cost of adding or swapping the inverter? Here is the info for the modules: SunPower 230 WHT Vmpp 41.0 V Impp 5.61 A Voc 48.7 V Isc 5.99 A SunPower 245NE WHT Vmpp 40.5 V Impp 6.05 A Voc 48.8 V Isc 6.43 A I imagine that the tracker in the Sunny Boy will be a little off and perhaps the result will be that both strings will be running a few percent lower than they are capable of? Best, August August Goers Luminalt Energy Corporation o: 415.641.4000 m: 415.559.1525 _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org<mailto:RE-wrenches@lists.re-wrenches.org> Change email address & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm<http://www.re-wrenches.org/etiquette.htm> Check out participant bios: www.members.re-wrenches.org<http://www.members.re-wrenches.org>
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