Sunsynk (DEYE) Hybrid Inverters

Yes I will do that, the manual with my inverter shows a relay that should close the E-N bond. I bought a contactor for that purpose too but am hoping it's unneeded. I had an issue with the time of use settings tonight the inverter refused to charge the battery after I'd changed some settings. I'm only using the first two programs and the remaining 4 were set to the same start and end time 23:00 with the 5% SOC and no grid charge. That worked fine until tonight and I changed the power on the on the first program from 6000 to 6500. To solve I'd to set the 4 "unused" programs to charge from grid, 100% SOC and 6500 for power. Am I using them incorrectly?

Thanks again for this and for the sake of anyone else following I had a floating earth on the load terminals with the grid isolated. I've installed the contactor now and its creating the E-N bond with the grid down.

Do any of you have any issues with the inverter keeping time? I thought I was having issues with one of the TOU programs, but it was actually the clock that was almost 10 minutes slow. It's set to sync, too, and there's no issue accessing public NTP servers from the subnet it's on.

That's strange, I've never seen an issue with mine.

What's the Geni, would you recommend?

So just to clarify for the load port acting as a backup supply. Is just an extra live needed from the consumer unit (from change over switch) to the load of the inverter? The existing earth & neutral that are connected to the grid can be used? So if doing an install a 4 wire cable can be used? 1 live for grid & 1 for load + the earth & neutral?

Or is two separate 3 core (L, N, E) needed

I eventually got onto the Pinergy rate, but it seems my CT is underreading by about 50-100w. I know it will never be perfect with zero import, as the inverter needs time to respond to loads etc. Do you guys see something similar? I'd rather not try replacing the CT cable or installing a meter, so for now, I've adjusted the CT ratio slightly to attempt to compensate so will monitor the impact of that for a few days. I'd rather export 50-100w from the battery than import it but was wondering if there was a better/alternative solution?

Asked this before but wasn't fully sure if possible. Will the system run without a CT clamp? I'd rather just get my system up and running. Having to splice ethernet cables and pull it through 30 metres of underground duct just to get it back to the distribution box is a whole seperate job for another day. I've heard the CT clamp is only really essential for systems where zero-export must be guaranteed?

I'd a bit of time to look at this again today and I've configured Zero export power to 5w from 0w and there's a marked improvement on the stability of the import I'm observing. When I started investigating with it set to 0w it was hunting a lot and fluctuating rapidly between 0w and 200-300w, I tried 20w and it immediately settled down to 20w-30w so I went for 5w and if reduced further while maintaining the same stability. There was no one home all day so no real fluctuating loads and I changed to 20w around 15:00 and 5w around 18:30. You can see the impact below. Looks like setting Zero export power to 0w was a bad idea!

I have been giving planning permission to get a home battery for my setup from the financial controller (herself 😋) but I dont know the best way to do it with my setup.

I have been thinking of getting a Sunsynk 8.8kW hybrid inverter that will have to power to charge batteries at up to 190Amps so I can best use short tariff windows and maybe this dynamic pricing that will be coming.

two options are; 

1. Rip out my existing 6kW solis inverter and just replace it with the Sunsynk or,
2. Install a Sunsynk as a separate AC Coupled battery system to my existing Solis PV inverter.  

Advantages of replacing my Solis with the Sunsynk would be simpler just get an electrician to replace it and add a DIY battery. But from reading here I might run into trouble with my NC6 and might need an NC7. Also I am a bit worried that the Sunsynk would be a bit louder that my auld Solis which is currently in my utility room and I dont have too much space there anyway, two DIY batteries as most. But the Solis is right next to the consumer board.

Second option is to install a separate 8.8kW Sunsynk in my garage which is joined to the house and attached to the utility room (2-3 meters at most of wiring to the Consumer board). This would be a separate AC coupled battery system. I have loads of space in here, no issues with noise etc and I can expand as required. I think I am answering my own question, having the separate AC coupled system might be the best option even with more system losses etc

Also what is the best system for backup power if I were to implement. I know it a bit more complicated needing changeover switches etc but this is one thing that she wants after the last storm debacle even though we didn't lose power at all.  

Cool, just read that 190A off the spec sheet but didn't look into the details and that would be straight from the PV to get those numbers. Anyway 8kW charging is very good and would make the difference if I got 30kWh of batteries it would practically fill them over the 3 hours considering I won't be starting from 0 or going to 100% everyday.

Think I will just set this up in the garage.

I saw from a few posts back there was a fella on ebay selling them from Germany. Is this still the best place to get a Sunsynk.

I have a 16kVA connection so I'm lucky I can pump in a but more to the battery, so may as well get the bigger inverter.

Kicking myself one of the users on here (forget the name) had his 8.8kW up for sale on adverts and I was so tempted to buy it but at the time wasnt sure I was going to do it as the time.