Hi all, 

My qn is:

1. Can you backfeed to your grid meter by ticking "Solar sell" (on a Deye) and does this reflect as consumption by your meter (ie you will be charged by eskom for your own production!?! 😭). If I choose this option my inverter home screen shows power being sent back to grid (eg - 2.5kw) and the eskom meter shows a consumption (that matches the power sent back to grid) even if I put down every circuit breaker on the DB and there's zero demand from the house. 

2. Should the grid icon ever display a negative value (ie on the inverter home screen)? 

3. Please explain what these two settings mean:

"Zero export to load" 

"Zero export to CT" 

Is load your non essential load? So ticking this means you don't send anything to non essentials load? 

How does ticking "Zero export to CT" translate to send to non essentials too?

Is CT essentially the grid, but why did mine send to grid even though I chose zero export to ct? Was it the "Solar Sell" that caused issues?  

Any help and advise will be gratefully appreciated

 

I've got a SunSynk and the functionality is probably the same, apart from difference in the terminology. So for what it's worth, on the SunSynk (and per the grid settings on app),

Zero Export + Limit to Load only: this limits inverter / solar power to your essentials only

Limited to Home: this provides inverter / solar power to both your essentials and non-essentials (provided grid is present), and the source can be solar and/or battery (subject to it not dipping below the pre-set battery SOC that you've set, if using the min SOC/time of day schedule).

Zero export to CT means you're not exporting to grid. But (on the SunSynk) if you're on the 'limited to home' setting, you'll feed both the essentials and non-essentials with solar/battery. When grid falls away, the non-essentials do not get power even if on "limited to load" is set.  

14 hours ago, Solarmaxi said:

the eskom meter shows a consumption (that matches the power sent back to grid) even if I put down every circuit breaker on the DB and there's zero demand from the house

The CT clamp sits on the incoming feed / grid side, before the breakers. My understanding is that if you were to "export to grid" (which I believe is illegal without the necessary authorisation and bi-directional meter in place), depending on where the current meter is, you're basically paying Eskom for your own consumption PV production. I think the "solar sell" is the culprit here, but others will be better placed to answer this. 

Edited July 17, 20233 yr by Kalahari Cruiser
language edit

8 hours ago, Solarmaxi said:

Hi all, 

My qn is:

1. Can you backfeed to your grid meter by ticking "Solar sell" (on a Deye) and does this reflect as consumption by your meter (ie you will be charged by eskom for your own production!?! 😭). If I choose this option my inverter home screen shows power being sent back to grid (eg - 2.5kw) and the eskom meter shows a consumption (that matches the power sent back to grid) even if I put down every circuit breaker on the DB and there's zero demand from the house. 

2. Should the grid icon ever display a negative value (ie on the inverter home screen)? 

3. Please explain what these two settings mean:

"Zero export to load" 

"Zero export to CT" 

Is load your non essential load? So ticking this means you don't send anything to non essentials load? 

How does ticking "Zero export to CT" translate to send to non essentials too?

Is CT essentially the grid, but why did mine send to grid even though I chose zero export to ct? Was it the "Solar Sell" that caused issues?  

Any help and advise will be gratefully appreciated

 

Take away the tick under Solar Sell. It is as you say: it will cause your system to export to Eskom, and your meter is registering it as a purchase because it cannot distinguish import from export.

Again, your inverter is capable of exporting and selling back, but if you are not registered with the municipality, and if your municipal meter is not capable, just don't do it.

Zero export to Load will send power to the essential loads only. Zero export will send power also to non-essential loads. This assumes that the CT coil is installed correctly, because the CT will give the inverter the info it needs to direct your power.

Thanks!!! 

This forum is great! A real brotherhood where we learn tons like you can end up actually charging yourself for the electricity you spent 100s of 000s to produce 🙈🤦‍♂️😭

 

Thanks to both of you @GreenFields @Kalahari Cruiserfor your helpful reply. I now have that little bit more insight into all this. 👏🙏🏼