[RE-wrenches] Adding similar but updated modules to same inverter

[Carl Adams]

August,

This looks like a good opportunity to upgrade to the new SunnyBoy 3000-TL.

   - The dual MPPTs would handle the different module strings without
   sacrificing efficiency
   - The CEC efficiency of the new TL model is better than the SB 3000
   - You get the built in arc fault protection with the new TL model
   - You can offer the optional 1500W power outlet if this appeals to the
   customer

We've upgraded several SBs with larger units and had no trouble selling the
old ones on Ebay for a good price.

Cheers
Carl Adams
SunRock Solar



On Fri, Jul 12, 2013 at 7:27 PM, August Goers <august at 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 at 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
>
> Check out participant bios:
> www.members.re-wrenches.org
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org/attachments/20130712/e0f2c59a/attachment-0004.html>