[RE-wrenches] Xantrex XW6048 HOT!

[Jason Szumlanski]

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
<re-wrenches at lists.re-wrenches.org> 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  offgridsolar at sti.netoffgridsolar@sti.net
> 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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