What does Zero Export Actually Mean
I know this question has been answered a thousand times but I’m too dumb to know how to search for it without getting 10,000 hits that don’t answer the question, so here it is for the 1001th time. Sorry!
I actually have a Deye inverter and have been going around and around with this for 5 months. What in the sam hell is Zero Export + Solar Export? Besides being an oxymoron? Does this mean Zero export from anything EXCEPT solar? Does it really mean “use the CT to measure stuff”?
On my Deye inverter the Work Mode that I use is Zero Export to CT with Solar Sell checked to export excess solar. At present I don’t have a battery and nothing is even connected to the Load terminals so the Zero Export to Load option would make no sense. I tried Selling First and the system stopped logging anything. I assume in this mode the CT isn’t used so there’s no way to measure anything.
Can BOTH Solar Export AND Limit to Load Only be checked? This might be like the Deye Zero Export to Load with Solar Sell checked, but what would this even mean? How could you limit to load while also exporting but NOT feed the home load? The Deye inverter references a “built-in CT” when referencing Zero Export to Load, so does this mean it doesn’t use an EXTERNAL CT to differentiate what’s exported to the grid from what is used by the home load?
So, when is an external CT used? Any time Zero Export is checked?
None of Deye, SunSynk, or Sol-Ark have been able to explain how all of this works in understandable terms. They use different words but the explanations are equally ambiguous and confusing. Why the hell is it so hard to explain what’s actually happening?
If Zero Export is ticked nothing is exported…unless Solar Export is checked and then power IS exported. On my Deye inverter I use Zero Export to CT and check Solar Sell and power is exported to the grid.
I think Zero Export means “use an external CT to measure stuff”. If it’s unchecked, I’ll bet nothing gets logged for consumption, import, or export because the inverter simply wouldn’t know, it’d just send all available power to the grid and load terminals and call it a day. I don’t know why there’s even an option not to have a CT, but maybe some people just don’t care to know how their solar power is being used? I guess it’d be fine if you’re off grid. In that case you’d only care about production and your batteries, and there wouldn’t even be a place to put a CT.