Firmware version? What is the generator low voltage set point set to? If it is a good quality get set this should be set ~110-112 VAC that way when the gen set is unloading/shutting off, the inverter will switch at that voltage from gen set to inverter. you also have a Hz set point for the genset to latch/unlatch that apparently it is not disconnecting. 55hz. 80 VAC for AC2, I believe is the default. > On Dec 29, 2016, at 2:27 PM, Lou Russo <l...@spreesolarsystems.com> wrote: > > Wrenches, > > I recently installed a Schneider Conext SW 4024, Schnieder's DC Distribution > panel, AC Distribution panel, SCP, and the AGS. It was to be a > straightforward inverter swap, Xantrex 4024 to the Conext SW setup. The > actual installation went fine. I did switch over the house wiring from 120 to > 240 as well as the diesel genset. > > After a steep learning curve with the client all seemed well. 1 week later > she called and says the power behaves oddly as the generator is shutting > down. Symptoms are some arc fault breakers trip and the compressor on her > fridge sounds like its bogging down. I make the 45 minute drive out and > started my search. This is a site with 3 buildings on 3 acres. I double > checked all my wiring at the inverter, then moved onto the various buildings > checking for redundant neutral to grounds, proper bonding, etc… Surprisingly > although not great workmanship everything is where it is supposed to be. I > decided to give the AC input on the inverter it's own dedicated neutral as at > this point I was reaching for straws and the installation manual was unclear > about this detail. Still nothing. A call to Schnieder confirmed that there > was no setting I was missing. > > I placed another call to Schnieder tech support. They did and have continued > to answer the phone promptly. It did take a bit of chasing them but I finally > got a answer that there Level 3 folks can reproduce the error. The inverter > is following the frequency of the genset as it winds down down to 40hrtz. > This is after the AC transfer inside the inverter has happened. During the > cool down period everything is fine. This happens as the genset is actual > shutting off and spinning down to a stop. They say this a firmware issue and > that it will take months to push out as is needs to be UL listed. In the > meantime I have a pissed off client, her oven went belly up on the low > frequency voltage, there is concern about possible unseen damage to her new > water pump, and I wasted countless hours of my own time attempting to make > the situation right. All of this due to a firmware that was released with a > fatal flaw and can not be changed for months. > > I am extremely disappointed in Schneider. I have been hesitant use them over > the years as I was still scarred from the Xantrex days. My “beta” test went > will with a early version I installed 2 years ago so I figured it was a safe > move. Obviously I was wrong. Lesson learned stick with Outback and SMA. > > So I have 2 questions for the list. > > 1.Has anybody else on the list seen this issue and corrected it regardless of > the firmware? I have installed one other conext sw about 2 years ago when it > first came out. The setup is very similar except that it is 48V and has a > very old firmware. I went out to this old site to confirm all is well and it > is fine. > > 2.Does anybody have a good contact at Schneider that could be of help? I > tried to contact Sandra Herrera as she was a great help years ago, but her > phone number no longer works. > > 3.Does anybody have an old version of the Conext firmware lying around they > could point me to? The website does not seem to have old versions. > > Any input is greatly appreciated! > > Schnieder, if you have a presence here contact me. > > > Aloha, > > Lou Russo > l...@spreesolarsystems.com <mailto:l...@spreesolarsystems.com> > 440 345 6762 > Spree Solar Systems LLC > CT-34322 > > _______________________________________________ > List sponsored by Redwood Alliance > > 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 > > List-Archive: > http://www.mail-archive.com/re-wrenches@lists.re-wrenches.org/maillist.html > > List rules & etiquette: > www.re-wrenches.org/etiquette.htm > > Check out or update participant bios: > www.members.re-wrenches.org >
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