[RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) Version of Microinverters?
It has been a while since I installed a PV system, so I apologize in advance for my ignorance wrt product availability. I recently had need for the off-grid equivalent of a grid-tied microinverter. I have an assortment of new and not so new PV modules such as the Solaria mono, 400 Wp and the Jinko poly, 310 Wp. I would like a microinverter that makes available 120 Vac (or 240 Vac but 120 is preferable), 60 Hz. I would then take the output of these microinverters and combine them in a subpanel. I do not have a need for battery storage. I can explain more about the application to anyone who has an interest. Does such an component exist? Thanks in advance for any help. - Peter Peter T. Parrish, Ph.D.President, California Solar Engineering1107 Fair Oaks Blvd Ste. 351South Pasadena, CA 91030(323) 839-6108 ___ 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
Re: [RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) Version of Microinverters?
Take a look at Cybo inverters-GlennSent from my 'smart'phone, so please excuse typos and spelling errors.-- Original message--From: petertor--- via RE-wrenchesDate: Sat, Apr 16, 2022 12:49 PMTo: re-wrenches@lists.re-wrenches.org;Cc: peter...@pobox.com;Subject:[RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) Version of Microinverters? It has been a while since I installed a PV system, so I apologize in advance for my ignorance wrt product availability. I recently had need for the off-grid equivalent of a grid-tied microinverter. I have an assortment of new and not so new PV modules such as the Solaria mono, 400 Wp and the Jinko poly, 310 Wp. I would like a microinverter that makes available 120 Vac (or 240 Vac but 120 is preferable), 60 Hz. I would then take the output of these microinverters and combine them in a subpanel. I do not have a need for battery storage. I can explain more about the application to anyone who has an interest. Does such an component exist? Thanks in advance for any help. - Peter Peter T. Parrish, Ph.D.President, California Solar Engineering1107 Fair Oaks Blvd Ste. 351South Pasadena, CA 91030(323) 839-6108 ___ 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
Re: [RE-wrenches] Sol-Ark 15k
Hello, The overcurrent device is to protect the conductors. you can put any size wire, but you must protect with the overcurrent device. REmember in solar equipment; you may have more than one supply source. The DC best example is solar modules connected in parallel, on On Fri, Apr 15, 2022 at 8:26 PM Jerry Shafer via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > You must meet all expected source output potentials within the design and > operating limits, as long as the distribution panel and connected wiring is > rated for the max output of the protected source then you are good. A 200 > ATS connected to a 10 kW genny does not require 2/0 as it will never meet > that rating. Just remember its whatever the max output can be plus your > margin. > > On Fri, Apr 15, 2022, 5:44 PM Chris Sparadeo via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hi Jason, >> >> You bring up a valid point….in an off-grid scenario with the 15k do you >> size the conductors to the continuous capacity, surge capacity or the OCPD >> of the unit? >> >> -Chris >> >> On Fri, Apr 15, 2022 at 4:01 PM Jason Szumlanski via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> P.S. ICYMI, this inverter has a massive combined AC coupled and DC >>> coupled capacity. They allow 15kWdc plus 19.2kWac!!! Impressive. >>> >>> >>> >>> >>> >>> >>> On Fri, Apr 15, 2022 at 10:59 AM Jason Szumlanski < >>> ja...@floridasolardesigngroup.com> wrote: >>> I'm not following the wiring diagrams for this new inverter. It has 200A pass-through capability with an integrated 200A load disconnect. But then it says the wire gauge for the load out wiring can be #4 to 2/0. In an off-grid scenario where there is no generator, the max continuous output is 62.5A, so I assume 80A circuit protection could be used with 80A rated wire (#4), but how is that circuit protection implemented if the 200A breaker is integrated? Do you have to run a short piece of 2/0 to an external 80A rated OCPD and then step down to #4? Jason Szumlanski ___ >>> 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 >>> >>> -- >> Chris Sparadeo >> >> >> C_802-369-4458 >> H_802-728-3059 >> ___ >> 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
Re: [RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) Version of Microinverters?
yes, there are three versions of the cybo inverter, the one that I a most familiar with produced a 60 HZ AC signal; the voltage did not exceed 120 volts or 240 volts. The voltage out times the current out was equal to the voltage in times current in. This allowed me to operate a resistance load, like a water heater. On Sat, Apr 16, 2022 at 2:39 PM Glenn Burt via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Take a look at Cybo inverters > > -Glenn > Sent from my 'smart'phone, so please excuse typos and spelling errors. > > -- Original message-- > *From: *petertor--- via RE-wrenches > *Date: *Sat, Apr 16, 2022 12:49 PM > *To: *re-wrenches@lists.re-wrenches.org; > *Cc: *peter...@pobox.com; > *Subject:*[RE-wrenches] Is There an "Off-grid" (i.e. constant voltage) > Version of Microinverters? > > It has been a while since I installed a PV system, so I apologize in > advance for my ignorance wrt product availability. > > I recently had need for the off-grid equivalent of a grid-tied > microinverter. I have an assortment of new and not so new PV modules such > as the Solaria mono, 400 Wp and the Jinko poly, 310 Wp. I would like a > microinverter that makes available 120 Vac (or 240 Vac but 120 is > preferable), 60 Hz. I would then take the output of these microinverters > and combine them in a subpanel. I do not have a need for battery storage. > > I can explain more about the application to anyone who has an interest. > > Does such an component exist? > > Thanks in advance for any help. > > - Peter > > Peter T. Parrish, Ph.D. > President, California Solar Engineering > 1107 Fair Oaks Blvd Ste. 351 > South Pasadena, CA 91030 > (323) 839-6108 > ___ > 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
Re: [RE-wrenches] Sol-Ark 15k
Jason, Any additional OCPD downstream of the 200A load output breaker could allow for a smaller wire size to be used at these terminals. For example, load output conductors run to a 100A main breaker panel board. Obviously depending on circumstances, a #4 copper could fit the bill. What I’m not extremely excited about with the new design is that in an off-grid scenario with a generator and smart load, we would now need to integrate an AC disconnect for generator input (grid) and either a fused disconnect or loads panel for any smart load output. With the 12K unit, the integrated breakers help cut down on BOS and install time. -Chris On Sat, Apr 16, 2022 at 5:35 PM Darryl Thayer via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Hello, The overcurrent device is to protect the conductors. you can put > any size wire, but you must protect with the overcurrent device. REmember > in solar equipment; you may have more than one supply source. The DC best > example is solar modules connected in parallel, on > > On Fri, Apr 15, 2022 at 8:26 PM Jerry Shafer via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> You must meet all expected source output potentials within the design and >> operating limits, as long as the distribution panel and connected wiring is >> rated for the max output of the protected source then you are good. A 200 >> ATS connected to a 10 kW genny does not require 2/0 as it will never meet >> that rating. Just remember its whatever the max output can be plus your >> margin. >> >> On Fri, Apr 15, 2022, 5:44 PM Chris Sparadeo via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> Hi Jason, >>> >>> You bring up a valid point….in an off-grid scenario with the 15k do you >>> size the conductors to the continuous capacity, surge capacity or the OCPD >>> of the unit? >>> >>> -Chris >>> >>> On Fri, Apr 15, 2022 at 4:01 PM Jason Szumlanski via RE-wrenches < >>> re-wrenches@lists.re-wrenches.org> wrote: >>> P.S. ICYMI, this inverter has a massive combined AC coupled and DC coupled capacity. They allow 15kWdc plus 19.2kWac!!! Impressive. On Fri, Apr 15, 2022 at 10:59 AM Jason Szumlanski < ja...@floridasolardesigngroup.com> wrote: > I'm not following the wiring diagrams for this new inverter. It has > 200A pass-through capability with an integrated 200A load disconnect. But > then it says the wire gauge for the load out wiring can be #4 to 2/0. > > In an off-grid scenario where there is no generator, the max > continuous output is 62.5A, so I assume 80A circuit protection could be > used with 80A rated wire (#4), but how is that circuit protection > implemented if the 200A breaker is integrated? Do you have to run a short > piece of 2/0 to an external 80A rated OCPD and then step down to #4? > > Jason Szumlanski > > > > > > ___ 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 -- >>> Chris Sparadeo >>> >>> >>> C_802-369-4458 >>> H_802-728-3059 >>> ___ >>> 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://l
Re: [RE-wrenches] Sol-Ark 15k
That's what I'm thinking. You would need to use a 200A conductor to a separate load out OCPD before downsizing the wire. I guess there are pros and cons, but it seems this is geared toward whole house backup for 200A services. I'm eager to get an opportunity to use it in that scenario. Jason On Sat, Apr 16, 2022, 10:06 PM Chris Sparadeo via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > Jason, > > Any additional OCPD downstream of the 200A load output breaker could allow > for a smaller wire size to be used at these terminals. For example, load > output conductors run to a 100A main breaker panel board. Obviously > depending on circumstances, a #4 copper could fit the bill. > > What I’m not extremely excited about with the new design is that in an > off-grid scenario with a generator and smart load, we would now need to > integrate an AC disconnect for generator input (grid) and either a fused > disconnect or loads panel for any smart load output. With the 12K unit, the > integrated breakers help cut down on BOS and install time. > > -Chris > > On Sat, Apr 16, 2022 at 5:35 PM Darryl Thayer via RE-wrenches < > re-wrenches@lists.re-wrenches.org> wrote: > >> Hello, The overcurrent device is to protect the conductors. you can put >> any size wire, but you must protect with the overcurrent device. REmember >> in solar equipment; you may have more than one supply source. The DC best >> example is solar modules connected in parallel, on >> >> On Fri, Apr 15, 2022 at 8:26 PM Jerry Shafer via RE-wrenches < >> re-wrenches@lists.re-wrenches.org> wrote: >> >>> You must meet all expected source output potentials within the design >>> and operating limits, as long as the distribution panel and connected >>> wiring is rated for the max output of the protected source then you are >>> good. A 200 ATS connected to a 10 kW genny does not require 2/0 as it will >>> never meet that rating. Just remember its whatever the max output can be >>> plus your margin. >>> >>> On Fri, Apr 15, 2022, 5:44 PM Chris Sparadeo via RE-wrenches < >>> re-wrenches@lists.re-wrenches.org> wrote: >>> Hi Jason, You bring up a valid point….in an off-grid scenario with the 15k do you size the conductors to the continuous capacity, surge capacity or the OCPD of the unit? -Chris On Fri, Apr 15, 2022 at 4:01 PM Jason Szumlanski via RE-wrenches < re-wrenches@lists.re-wrenches.org> wrote: > P.S. ICYMI, this inverter has a massive combined AC coupled and DC > coupled capacity. They allow 15kWdc plus 19.2kWac!!! Impressive. > > > > > > > On Fri, Apr 15, 2022 at 10:59 AM Jason Szumlanski < > ja...@floridasolardesigngroup.com> wrote: > >> I'm not following the wiring diagrams for this new inverter. It has >> 200A pass-through capability with an integrated 200A load disconnect. But >> then it says the wire gauge for the load out wiring can be #4 to 2/0. >> >> In an off-grid scenario where there is no generator, the max >> continuous output is 62.5A, so I assume 80A circuit protection could be >> used with 80A rated wire (#4), but how is that circuit protection >> implemented if the 200A breaker is integrated? Do you have to run a short >> piece of 2/0 to an external 80A rated OCPD and then step down to #4? >> >> Jason Szumlanski >> >> >> >> >> >> ___ > > ___ 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
