Jay: The back story is sometimes useful. Thank you for filling in the details.
I have a soft spot for community radio. I also have some used, working SB 2500U inverters on the shelf. I’d be happy to send you one. Contact me off list. The used inverter offered came from an art-house theater. These were the units I ordered for 208 by mistake and had to send back to be made 240. They were replaced by TL-21 inverters. See this link if you are curious. https://www.thepalmtheatre.com/about-us I agree that in most cases we need to comply with updated standards. I have on occasion bent the rules to apply an in-stock inverter that does not meet the latest and greatest requirements to replace an older unit. For example I am pretty lenient with clients that want to remove an antiquated AES1000 or other inverter and put in something newer without stirring the hornets-nest of utility or building department approval. William Miller www.millersolar.com > On May 18, 2021, at 7:15 PM, Jay <jay.pe...@gmail.com> wrote: > > > Dear wrenches > > I did not include the back story as it is not relevant to my inquiry. However > given the comments I decided to include it in that it will hopefully clear up > any confusion. > > Where I used to live, the local community radio station ( poorly funded) has > a old PV system with you guessed it a SMA SB2500U that was installed brand > new a long time ago. > It failed and a replacement was located for $150. But it was 208 and not > 240vac, which someone didn’t catch when ordering it. > A buck/boost transformer allows it to work but adds tare losses that we were > trying to remove. > > It is my understanding that a like for like component swap is covered under > code rules. Regardless, no inspection or calls to the county permit office > were made or will be made. One of the great joys of living very rurally. > > Back to my original post about how to or if it’s possible to convert a 208 to > 240vac SMA SB2500U, which appears to be no, thanks to all who contacted me. > > Jay > > Peltz Power. > >>> On May 18, 2021, at 7:23 PM, Jerry Shafer <jerrysgarag...@gmail.com> wrote: >>> >> >> Wrenches >> I would also be surprised if the old 2500 would last very long. >> Better off with a SB5.0-41 and if you need RSD then add that in also. >> >>> On Tue, May 18, 2021, 12:15 PM Dave Angelini Offgrid Solar >>> <offgridso...@sti.net> wrote: >>> Probably if it is old it does not have these recent Certifications and UL >>> requirements. Just gave these to my local AHJ. >>> >>> IEEE 1547, UL 1741-SA, Rule 21, Rule 14H, PREPA, and CSA 107.1 >>> >>> Product Certification History Project Date Description 80049402 2020-09-18 >>> Update to report 70194014 to meet grid support function according to CA >>> Rule 21 for 120Vac output configuration. 80036281 2020-03-15 Update report >>> 70194014 to include UL1741 CRD SA17/18 UL 1741(California Rule 21 Phase 3 >>> Function 2 and Function 3) for Model XW Pro 6848 NA. 80020062 2019-10-30 >>> Update report 70194014 to include firmware upgrade for Model XW Pro 6848 >>> NA. 70220117 2019-03-27 Update Report 70194014 to include minor firmware >>> update for Model XW Pro 6848 NA. 70212688 2019-03-04 Update Report 70194014 >>> to Include Volt-Watt and revised Freq-Watt grid tie requirements as per >>> UL1741 Supplement SA for Model XW Pro 6848 NA (FGA 865-6848-21). >>> >>> Dave Angelini Offgrid Solar >>> "we go where powerlines don't" >>> http://members.sti.net/offgridsolar/ >>> e-mail offgridso...@sti.net >>> text 209 813 0060 >>>> On Tue, 18 May 2021 14:07:08 -0400, "Glenn Burt" <glenn.b...@glbcc.com> >>>> wrote: >>>> >>>> Hi Kirk, >>>> >>>> >>>> >>>> Can you elaborate on which UL standards the older SB units don't comply >>>> with? >>>> >>>> >>>> >>>> -Glenn >>>> >>>> >>>> >>>> From: RE-wrenches <re-wrenches-boun...@lists.re-wrenches.org> On Behalf Of >>>> Kirk Herander, VSE >>>> Sent: Tuesday, May 18, 2021 6:42 AM >>>> To: re-wrenches@lists.re-wrenches.org >>>> Subject: Re: [RE-wrenches] SMA SB 2500U >>>> >>>> >>>> >>>> These older Sunnyboys do not comply with latest UL standards regardless. >>>> If its a new installation, a savvy utility / AHJ will catch this. >>>> >>>> >>>> >>>> Kirk Herander / kirkh@vermont.solar >>>> >>>> Owner|Principal, VT Solar, LLC >>>> >>>> Celebrating our 30th Anniversary 1991-2021!! >>>> >>>> www.vermont.solar >>>> >>>> dba Vermont Solar Engineering >>>> >>>> 802.863.1202 >>>> >>>> On 5/17/2021 3:53:26 PM, William Miller <will...@millersolar.com> wrote: >>>> >>>> Jay: >>>> >>>> Some years ago I mis-ordered 5 SB2500s for 208 three phase and it turned >>>> out the system was 240 VAC three phase (open delta). I had to return the >>>> inverters to the factory to be converted and I had to rewire all of the >>>> arrays. So no, I don't think this can be done in the field. >>>> >>>> William Miller >>>> >>>> Miller Solar >>>> 17395 Oak Road, Atascadero, CA 93422 >>>> 805-438-5600 >>>> www.millersolar.com >>>> CA Lic. 773985 >>>> >>>> >>>> -----Original Message----- >>>> From: RE-wrenches [mailto:re-wrenches-boun...@lists.re-wrenches.org] On >>>> Behalf Of Jay >>>> Sent: Monday, May 17, 2021 11:44 AM >>>> To: RE-wrenches >>>> Subject: [RE-wrenches] SMA SB 2500U >>>> >>>> Does anyone know if you can convert a >>>> SMA SB2500U ( old red inverter) from 208 to 240vac? >>>> >>>> Without using a boost transformer. >>>> >>>> Thx >>>> Jay >>>> >>>> Peltz power. >>>> >>>> >>>> _______________________________________________ >>>> List sponsored by Redwood Alliance >>>> >>>> Pay optional member dues here: http://re-wrenches.org >>>> >>>> List Address: RE-wrenches@lists.re-wrenches.org >>>> >>>> Change listserver email address & settings: >>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> >>>> There are two list archives for searching. When one doesn't work, try the >>>> other: >>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>>> >>>> List rules & etiquette: >>>> http://www.re-wrenches.org/etiquette.htm >>>> >>>> Check out or update participant bios: >>>> http://www.members.re-wrenches.org >>>> _______________________________________________ >>>> List sponsored by Redwood Alliance >>>> >>>> Pay optional member dues here: http://re-wrenches.org >>>> >>>> List Address: RE-wrenches@lists.re-wrenches.org >>>> >>>> Change listserver email address & settings: >>>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>>> >>>> There are two list archives for searching. When one doesn't work, try the >>>> other: >>>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>>> >>>> List rules & etiquette: >>>> http://www.re-wrenches.org/etiquette.htm >>>> >>>> Check out or update participant bios: >>>> http://www.members.re-wrenches.org >>>> >>> _______________________________________________ >>> List sponsored by Redwood Alliance >>> >>> Pay optional member dues here: http://re-wrenches.org >>> >>> List Address: RE-wrenches@lists.re-wrenches.org >>> >>> Change listserver email address & settings: >>> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >>> >>> There are two list archives for searching. When one doesn't work, try the >>> other: >>> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >>> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >>> >>> List rules & etiquette: >>> http://www.re-wrenches.org/etiquette.htm >>> >>> Check out or update participant bios: >>> http://www.members.re-wrenches.org >>> >> _______________________________________________ >> List sponsored by Redwood Alliance >> >> Pay optional member dues here: http://re-wrenches.org >> >> List Address: RE-wrenches@lists.re-wrenches.org >> >> Change listserver email address & settings: >> http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org >> >> There are two list archives for searching. When one doesn't work, try the >> other: >> https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ >> http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org >> >> List rules & etiquette: >> http://www.re-wrenches.org/etiquette.htm >> >> Check out or update participant bios: >> http://www.members.re-wrenches.org >> > _______________________________________________ > List sponsored by Redwood Alliance > > Pay optional member dues here: http://re-wrenches.org > > List Address: RE-wrenches@lists.re-wrenches.org > > Change listserver email address & settings: > http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org > > There are two list archives for searching. When one doesn't work, try the > other: > https://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/ > http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org > > List rules & etiquette: > http://www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > http://www.members.re-wrenches.org >
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