[RE-wrenches] SWR2500U Inverter
Dave Click
daveclick at fsec.ucf.edu
Wed Nov 18 08:14:41 PST 2009
Good catch Bob, there seems to be a page missing from that table... this
report from Bill's site has the complete table (at the end of the file,
again).
http://www.brooksolar.com/files/Expedited_Explanation-5-6-09.pdf
DKC
-------- Original Message --------
Subject: Re: [RE-wrenches] SWR2500U Inverter
From: robert ellison <reellison at gmail.com>
To: RE-wrenches <re-wrenches at lists.re-wrenches.org>
Date: 2009/11/18 11:01
> My eyes must be bad, i just looked at the entire list 3 times and New
> York state is not on it anywhere.
>
> I have see 48 below and just wanted to see what the averages ctually were.
>
> Bob
>
> On Wed, Nov 18, 2009 at 7:30 AM, Dave Click <daveclick at fsec.ucf.edu
> <mailto:daveclick at fsec.ucf.edu>> wrote:
>
> Just a note here- rather than using the record lows, you can go back
> to the future and use the ASHRAE minimum expected temperatures as
> the 2011 NEC will allow explicitly. In the '08, it says to use the
> "lowest expected ambient temperature," for which the ASHRAE
> temperatures are more appropriate than record lows. These ASHRAE
> temps will be higher than the record lows and will add a little more
> cushion there at 600 VDC.
>
> So where to get these temperatures? Starting on page 47:
> http://www.solarabcs.org/permitting/Expermitprocess.pdf
>
> Also, in case you didn't know, www.pvselect.com
> <http://www.pvselect.com/> is another option for string sizing that
> features multiple inverters and a 1 degree temperature step rather
> than the 9 degree (F) temperature step on the SMA sizer. They have
> the Kyocera KD130 in their database, but not the KC130.
>
> DKC
>
>
> -------- Original Message --------
> Subject: Re: [RE-wrenches] SWR2500U Inverter
> From: Brian Teitelbaum <bteitelbaum at aeesolar.com
> <mailto:bteitelbaum at aeesolar.com>>
> To: RE-wrenches <re-wrenches at lists.re-wrenches.org
> <mailto:re-wrenches at lists.re-wrenches.org>>
> Date: 2009/11/18 01:34
>
> Joel,
> The SMA SWR2500U inverter has been a long discontinued model.
> If you want to use an SMA inverter, go to the SMA website to use
> their excellent sizing program. Plug in the module, and your
> record minimum and average maximum temps for the site, and look
> for a current model inverter that will work. All of the "U"
> series inverters (except for the 700U) are discontinued models,
> and the "US" series are the current models.
> If your min temp is not below 14⁰F, it looks like you can use
> all 24 in one series string with the 4000US inverter, but that
> gets you awfully close to 600VDC (595VDC) at 14⁰F. You might
> want to play it safe and drop one of the modules. Unfortunately,
> none of the SMA inverters will operate with only 12 modules in a
> string (with two strings). However, a Fronius IG-3000 will, so
> you might want to go with that, although it has a lower efficiency.
> Brian Teitelbaum
> AEE Solar
> -----Original Message-----
> From: re-wrenches-bounces at lists.re-wrenches.org
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>
> [mailto:re-wrenches-bounces at lists.re-wrenches.org
> <mailto:re-wrenches-bounces at lists.re-wrenches.org>] On Behalf Of
> Joel Davidson
> Sent: Tuesday, November 17, 2009 4:56 PM
> To: RE-wrenches
> Subject: [RE-wrenches] SWR2500U Inverter
> Wrenches,
> Our customer has 24 each Kyocera KC130 modules and wants to go
> grid-tied.
> Can he use an SMA SWR2500U inverter with the fan kit? Is there a
> better
> inverter that will use all of his modules? If you have an
> SWR2500U or a
> better inverter option for sale, please contact me off-list.
> Thank you very
> much.
> Joel Davidson
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