Yeah, my next step was going to be that. It is the third inverter in the Xanbus daisy chain, and not the master, so I assume when it faults due to overtemp and shuts down, the Xanbus network stops there. Because there is no Xanbus terminator in the #2 inverter, it can't communicate, and the #4 inverter also can't communicate because the signal doesn't get that far. I'm hypothesizing here because I have been unable to duplicate the fault in my presence.
What I was going to try to do first is get #2, 3, and #4 to fault out, then move the Xanbus terminator from #4 to #2 and see if #2 comes back online. But I might just call it a day and take #3 out of commission. It's just over 10 years old... If another inverter fails, we will probably start over with a new system. 18kW is enough for this customer, but 12K is likely not. I was going to propose two Sol-Ark 15K, for a new system now, but he has 8 maxed out strings of PV (huge array), so I might go with three Sol-Ark 15K to handle up to 9 MPPT strings, which is probably overkill, but necessary if I want to eliminate the existing charge controllers. I'm trying to get every customer on the island to use the same inverter brand so I can streamline servicing for all of them. There are about 30 homes with some new ones under construction, and I stumbled into being "the guy" out there. Most of the newer homes have Sol-Ark inverters. Jason Szumlanski Principal Solar Designer | Florida Solar Design Group NABCEP Certified Solar Professional (PVIP) Florida State Certified Solar Contractor CVC56956 Florida Certified Electrical Contractor EC13013208 On Thu, Jun 13, 2024 at 11:27 AM Dave Angelini Offgrid Solar via RE-wrenches <[email protected]> wrote: > Disco 250A breaker on bad XW and remove its xanbus RJ45. Assume the bad one is > not the master? > > > > > Dave Angelini Offgrid Solar > "we go where powerlines don't" > > http://members.sti.net/offgridsolar/https://offgridsolar1.com/https://offgridsolar1.com/ > http://members.sti.net/offgridsolar/ > e-mail [email protected][email protected] > text 209 813 0060 > > > > > On 2024-06-13 8:01 am, Jason Szumlanski via RE-wrenches wrote: > > > I'm looking at an off-grid quad inverter setup for a client, not my > > installation. One of the stacked.inverters is extremely hot, sometimes it > > goes into F66 and takes down the adjacent inverters with it to F66 probably > > because of these Xanbus network is broken. > > > > I disabled charging and discharging on the inverter that is getting hot, but > > it's still remains very hot. Any ideas? > > > > I tried to put that one inverter in standby, but the generator will not sync > > with the remaining three and charge the batteries. So I have to leave it in > > normal operating mode for the moment. > > > > Jason Szumlanski > > Florida Solar Design Group
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