This is a really new product, so ... We get it.
This whole no-export situation should be simple. All we need is the 18K to act like a 'chargeverter' when it gets AC input. Ideally I would think this would use the generator input and here's why:
Suppose you have (like me) a 100A panel that runs everything. My average/mean load is about 5 KW/H. I spike from time to time up into the 18KW demand range (75A or so). So supposing we have our inverter, a bank of batteries and NO solar panels. I should be able to hook up a ~6KW generator and run my house using the batteries as a demand buffer. This is the same principle as an online UPS, the inverters run all the time and provide all load output.
At present if I make my 6KW 'generator' (240v/25A) a feed from the grid on a 30A breaker,
as soon as my panel load exceeds 30A, the breaker trips. I've tried a number of settings, but it's kind of annoying to test. What would be better is if the 'generator' input simply fed the AC->DC battery charging circuit 100% of the time. This REALLY ought to be simple.
An even NICER-TO-HAVE would be a sync between the grid and the inverters. Currently I feed a transfer switch inverter primary, grid secondary. I've got my inverters set to shut down at BAT/10%. Works ok, but the phase shift can cause a pretty big bang on the AC if it's running, which brings us to:
So this thing does turn back on. I was looking for a setting, I may have missed it, but it appears that in the morning once the charging starts, when the batteries hit 15% it turns on the inverters. This is about right, but it would be great to have a little more control using time. I may implement this myself, I just connected the RS-485, I'll start polling the box, and see what I can do. Ideally I'd like to make the on/off thresholds a mix of generated power and time of day... For example in the early am as PV is ramping up, allow the batteries to dip to say 8%, but shut them off at night at say 20%. Winter TOU here is 5-9.5-9, So keep a reserve, but kick everything on at 5AM... Dunno yet.
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