Solar edge 11.4 on high leg shutting down

As a matter of curiosity, for those who are more familiar with solar edge, what are the options under country and grid? I looked through the manual and it just says select country and grid does not show the list or anything. Does it have different grid options for the same country or is it just a country all you select?

The only thing it said about the neutral conductor is the following:

"When selecting an option with No Neutral or no N, connection to Neutral line is not required.
For any other option, you must connect the
Neutral line.".

I think the installer said he said it for 240 no neutral?
 
Per Wayne's post of the UL content, the standard does not require measuring the L-N voltage for delta systems. It's always been my understanding that where manufacturers call for a neutral on a single phase L-L inverter setup, the purpose is to distinguish between the 240 and 208V (or other, e.g. 230) grids by measuring the L-N phase angles. This allows the inverter to just start up on either of those grids from defaults, without the installer having to program it. So often the alternative to running a neutral is having to program every inverter all the time. This is basically what the SE manual says as I understand it; if you want the inverter to work with a neutral reference that doesn't show 120/240 or 120/208, then you will need to reprogram the inverter from default. (FWIW I once had a crew member report that a single phase SE inverter worked without a neutral when not reprogrammed from the default. But that may have been a fluky firmware version, I never saw that backed up by a manual and only heard of it once.)

What baffles me a bit is that you originally said the AB inverter(s) were working and only the BC wasn't. And I would have expected neither to work without reprogramming.
 
jaggedben said:
What baffles me a bit is that you originally said the AB inverter(s) were working and only the BC wasn't. And I would have expected neither to work without reprogramming.
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Hmm good point, that is odd. Yes the ab inverter has always worked fine. Seems like they should have had the same issue assuming the programming was the same. 🤔
 
I apologize for not reading the whole thread, but I am catching up after a two week hiatus/vacation. As I understand it all the inverters are connected phase to phase, and earlier I asked if any of the inverters connected to the B phase had connections to the neutral. If they did, those inverters would see two different L-N waveforms 120 degrees apart with two different voltages; would this not be a problem?
 
ggunn said:
I apologize for not reading the whole thread, but I am catching up after a two week hiatus/vacation. As I understand it all the inverters are connected phase to phase, and earlier I asked if any of the inverters connected to the B phase had connections to the neutral. If they did, those inverters would see two different L-N waveforms 120 degrees apart with two different voltages; would this not be a problem?
Click to expand...
As we discussed in the last few replies, it is odd that it seems this was an issue for the inverter on the BC phase but not the ones on the AB phase.
 
jaggedben said:
As we discussed in the last few replies, it is odd that it seems this was an issue for the inverter on the BC phase but not the ones on the AB phase.
Click to expand...
Correct. And I am absolutely sure that the AB ones worked fine, and it was only the BC that didn't work. I swapped the inverters and everything. They all had a neutral connection. I did not have access to the grid code/parameter so it is possible those are different, but the solar contractor said they were all set the same (initially).
 
jaggedben said:
As we discussed in the last few replies, it is odd that it seems this was an issue for the inverter on the BC phase but not the ones on the AB phase.
Click to expand...
I see, but I would expect that any inverters connected to both the B phase and the neutral would be freaking out. Maybe some were and some were not?
 
ggunn said:
I see, but I would expect that any inverters connected to both the B phase and the neutral would be freaking out. Maybe some were and some were not?
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Correct. Although I couldn't trace the conductors up to the pole transformer with 100% accuracy, it appeared the inverters had an issue with the open jaw but not the closed jaw.
 
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