See this image to see what we mean...
I hope this makes sense. Thanks, Kienan Green-Go Solar Wholesale Distribution LLC maxfieldso...@hotmail.com (801) 631-5584(Cell) www.distribution.solar On Jul 21, 2023 at 4:07 PM -0600, Kienan Maxfield via RE-wrenches <re-wrenches@lists.re-wrenches.org>, wrote: > I was just about to suggest the same thing Mac suggested. Any 120 V relay > would work. Just wire it in parallel with the auxiliary relay that is > shutting the inverter off. When the AC input is energized, the relay closes, > and your inverter turns on. I like using a relay that has a base. I trust the > Eaton ice cube ones, but they’re kind of expensive. Here’s a cheaper one… > > https://www.platt.com/p/0648927/abb/general-purpose-relay-11-blade-3pdt-120v-ac/abb1svr405612r2000 > > Base - > https://www.platt.com/p/0736026/abb/socket-11-blade-cr-m/abb1svr405651r2000 > > > These are the ones I stock on my work truck - > https://www.platt.com/p/0147434/eaton/relay-120vac-coil-dpdt-10a-8-pin-plug-in-style/786685930169/cutd3rf2a > > Base - > https://www.platt.com/p/0384871/eaton/socket-octal-8-pin-screw-clamp-terminals/782114159767/cutd3pa2 > > I like these ones for a few reasons. One, they seem to be quality. Two, you > can get them in a wide variety of coil voltages, including DC voltages. > Three, I like the little control tab where you can manually turn the relay on > if you ever have a reason to do that. > > Thanks, > Kienan > > > Green-Go Solar Distribution LLC > Maxfield Solar LLC (installation and consulting company) > maxfieldso...@hotmail.com > (801) 631-5584(Cell) > www.distribution.solar > > > On Jul 21, 2023, at 6:29 AM, Jay via RE-wrenches > > <re-wrenches@lists.re-wrenches.org> wrote: > > > > I’ve never used one before. > > > > Can you recommend one? > > > > > On Jul 21, 2023, at 5:12 AM, Mac Lewis via RE-wrenches > > > <re-wrenches@lists.re-wrenches.org> wrote: > > > > > > To avoid power relay, how about adding a voltage sensing coil on the AC > > > input and have an NC contactor that opens on voltage in series with the > > > inverter shutdown circuit. This should interrupt the inverter shutdown > > > any time the generator is on. > > > > > > > On Thu, Jul 20, 2023 at 6:00 PM Ray Walters via RE-wrenches > > > > <re-wrenches@lists.re-wrenches.org> wrote: > > > > > I've done the AC relay idea as well, on Schneider that didn't have > > > > > the easy off switching like the Outbacks. The problems are: > > > > > 1) Much bigger relay, much higher current on the control side as > > > > > well. It required a relay for the relay. > > > > > 2) If there's a malfunction, you are messing with the main feeders > > > > > for the home. > > > > > 3) The inverters are still on with their no load draw, a pair of VFX > > > > > inverters, would be 45 to 50 watts, so you could still shut the > > > > > batteries down. > > > > > I think in your case without AGS, the trick might be to add a bypass > > > > > control switch parallel to the relay, so they can manually turn the > > > > > inverters back on. > > > > > Ray > > > > > On 7/20/2023 5:15 PM, Jay wrote: > > > > > > Hi Ray > > > > > > > > > > > > This house won’t have an AGS, manual start only. > > > > > > > > > > > > And your comments exactly, having to wait until the next day when > > > > > > hopefully there is enough sun to charge the battery is iffy. > > > > > > > > > > > > Or they could do the inverter bypass switch. > > > > > > > > > > > > Again I’m back to why is it a worse idea to install a relay on the > > > > > > AC? > > > > > > > > > > > > Thx > > > > > > > > > > > > Jay > > > > > > > > > > > > As to the sol ark which I never thought about it being in a sense > > > > > > an AC coupled system. IE if the inverter is off it won’t charge. > > > > > > I guess you’ll have to install an external battery charger? > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > On Jul 20, 2023, at 5:08 PM, Ray Walters via RE-wrenches > > > > > > > <re-wrenches@lists.re-wrenches.org> wrote: > > > > > > > > > > > > > > The aux off is only if the generator doesn't start. You need to > > > > > > > set the gen start voltage higher. Aux off is last ditch shut > > > > > > > down, set for 44v for lead acid, or 47 to 49v, depending on the > > > > > > > battery and inverter. Hopefully DC coupled PV will raise the > > > > > > > voltage enough to turn the inverters back on the next day. > > > > > > > This is my concern on Solark installs, I just noticed that the > > > > > > > inverter won't pass through PV, if it hits its LVD set point. > > > > > > > On 7/20/2023 3:04 PM, jay via RE-wrenches wrote: > > > > > > > > HI All, > > > > > > > > > > > > > > > > I wanted to revisit this thread for one reason. > > > > > > > > > > > > > > > > If you turn off the inverter at the remote on/off with the AUX > > > > > > > > relay, then starting the generator won’t have any impact as the > > > > > > > > inverter is off. > > > > > > > > So someone will have to go and reset the AUX relay. > > > > > > > > > > > > > > > > Vs > > > > > > > > > > > > > > > > If you do a relay on the AC output, when you start the > > > > > > > > generator, it will start charging, raising the battery volts, > > > > > > > > causing the AUX relay to close AC output relay and you’ll have > > > > > > > > power in the house. > > > > > > > > > > > > > > > > Am I missing something? > > > > > > > > > > > > > > > > thanks > > > > > > > > > > > > > > > > jay > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Here is the last email I think: > > > > > > > > > > > > > > > > Mac, > > > > > > > > > > > > > > > > I think you've got an elegant solution to the problem. All you > > > > > > > > need is an inexpensive relay and to program the Aux output for > > > > > > > > loadshed. I believe shutting down the inverter with the remote > > > > > > > > on/off contacts is actually less stressful on the inverter than > > > > > > > > opening a relay or contactor on the load side. > > > > > > > > Kent Osterberg > > > > > > > > Blue Mountain Solar > > > > > > > > > > > > > > > > > > > > > > > > On 7/11/2023 5:19 PM, Mac Lewis via RE-wrenches wrote: > > > > > > > > > Hello Wrenches, > > > > > > > > > > > > > > > > > > I'm trying to solve an issue with an older Outback FX system. > > > > > > > > > It's a quad stack of Outback 3648 FX inverters and he has a > > > > > > > > > couple of Fortress eVault and an unreliable generator. The > > > > > > > > > LBCO setting can't go high enough to cut out before the > > > > > > > > > eVaults cut out so he occasionally will have to direct charge > > > > > > > > > the eVault to get things running again.I'd like to use a 12V > > > > > > > > > Aux relay logic to trip the primary inverter on/off contacts > > > > > > > > > before we go into battery shutdown so the solar has a chance > > > > > > > > > to recover the system. Pretty simple overall but I wanted to > > > > > > > > > see if there are any known ill effects of doing this with > > > > > > > > > substantial load on the system. Of course, I can use a power > > > > > > > > > relay but this may be better. > > > > > > > > > Thanks for your input! > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > > > > > > > > > > > > > _______________________________________________ > > > > > > > > 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 > > > > > > > > > > > > > > -- > > > > > > > > > > > > Mac Lewis > > > > > > "Yo solo sé que no sé nada." -Sócrates > > > _______________________________________________ > > > 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. 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