Sunsynk (DEYE) Hybrid Inverters

graememk

https://www.boards.ie/discussion/comment/123766578#Comment_123766578

Its the 8kW? there is only 2 mppts. But parallel inputs.

PV1 should be showing double the current.

Your max charge is set at 40 amps, which is about 2kw ish - that is what is likely limiting you

Ballylad

https://www.boards.ie/discussion/comment/123766599#Comment_123766599

hi Yes, 8kw inverter, 8.5kw panels , what max charge should I set it at, it's 5 batteries of 280Ah,

graememk

https://www.boards.ie/discussion/comment/123766634#Comment_123766634

As high as it goes!

You could charge that pack at 1000 amps 😂

Ballylad

https://www.boards.ie/discussion/comment/123766681#Comment_123766681

🤣, I'll chance 100 first, it won't let me change any settings, when I click into value, arrow keys will not change value

Blakes77

https://www.boards.ie/discussion/comment/123766776#Comment_123766776

The lowest charge current you have set in the BMS or DEYE take priority, What is setup in the BMS? Do you have the cables from battery to deye changed? if no stick at 100 max. The cables should be as thick as your thumb 50mm2 (min) or 70mm2, check they don't get hot. I am charging at max 270 amps (2 deye 5KW in parallel x 135A) and my cables (50mm) do get fairly warm

Ballylad

https://www.boards.ie/discussion/comment/123766919#Comment_123766919

currently set at 40A max current charge, will not change in Deye setttings, will have to get back to battery supplier to see what he has them set at. Thanks

graememk

https://www.boards.ie/discussion/comment/123766968#Comment_123766968

I've been able to change them on mine. My BMS doesn't set them. (Not there anyway)

Try unticking activate battery.

Try battery voltage rather than lithium to test

Ballylad

https://www.boards.ie/discussion/comment/123767371#Comment_123767371

Thanks, no luck with that, any thoughts on these settings, it's off grid as mentioned before

graememk

https://www.boards.ie/discussion/comment/123769001#Comment_123769001

So if you select battery voltage, can you still not change the charge current?

Everything else looks fine .

I think you should be able to change the charge settings from the app. I can change it on mine.

Ballylad

https://www.boards.ie/discussion/comment/123769509#Comment_123769509

Hi,

Can't change anything except selecting battery modes, don't have wifi out in carport yet but have the SOLARMAN data logger. At least AC output is working

Ballylad

https://www.boards.ie/discussion/comment/123769967#Comment_123769967

got it sorted today, needed to activate lock out all changes and put in password, then untick lock out all charges, pv output exactly right now.

Ballylad

Hi, just was reviewing my panel set up: I have 2 strings of 7 on m1,m2 side , 1 string of 7 on m3 side.
panels are 405w, max voc 37.06V,

8kw hybrid Deye has the following (see below), Is 2 strings together over the allowed voltage? Should I rearrange?

SD_DRACULA

https://www.boards.ie/discussion/comment/123773745#Comment_123773745

No it's fine, when you have them paralleled like that max voltage stays at voltage of 7 panels not 14, the amps double up.

MrMusician18

Can someone please explain to me the earth neutral bonding required on the sunsynk 5.5. I've tried watching the video sunsynk have on YouTube but it's terribly explained.

I have one of these inverters but I know my electrician isn't experienced with it.

The plan is to hook the backup output to a changeover switch as I don't want to split out existing circuits. Can anyone explain what's needed

championc

Earthing is a reference point for the 230v. The Earth reference point comes on the Neutral from the ESB. Without it, measuring the Live / Neutral will read half of that. So when the grid is lost, the neutral needs to be given the reference point again

MrMusician18

https://www.boards.ie/discussion/comment/123779434#Comment_123779434

Can you explain the switching to me and how this is wired? Does the inverter need its own earth rod.

Is there a switch available that will do the changeover and bond the neutral?

championc

You need a NC contactor (NO for 8kW units I'm sure). The house earth would be used.

You are simply linking Neutral to Earth

serox_21

When the inverter is in offgrid mode(no power from the mains and the only output is from backup port) a ground bonding of neutral wire is required for all appliances to work well. This can be done using a contactor to connect inverter backup N wire to PE wire. Add the contactor next to the inverter, this way is easy to connect the inverter signal wires to the contactor.

In Advanced Function Setup Menu on the inverter enable.

Signal ISLAND MODE: when "signal island mode" is checked and the inverter connects the grid, the ATS port voltage will be 0. When "signal island mode" is checked and the inverter disconnected from the grid, the ATS portvoltage will output 230Vac voltage. With this feature and outside NO type relay, it can realize N and PE disconnect on/or bond.

Above is from the Deye manual (3.6 -6Kw hybrid inverter model). Check you manual if you have a different model.

serox_21

and a screenshot from the manual with the diagram of the N/PE bonding

JohnySwan

Only connect the neutral to earth if your changeover switch switches the main neutral. If it doesn't switch the neutral then you don't need to worry about the bond.

Abromavich

Has anyone figured out a solution to the clock drift issue on the Deye inverter? Its the only setting I can't control from SA & HA. Any way to control or a good work around? Its really annoying as I want to stay within the cheap EV window but the clock needs manual correction every couple of weeks….

tnegun

You can set it from HA using the Sunsynk/Deye Inverter Add-on, my automation below

alias: Energy - Set Deye Inverter Time
description: ""
triggers:

• trigger: time
  at: "02:00:00"
  actions:

target:
entity_id: text.ss_date_time
data:
value: "{{ now().strftime('%Y-%m-%d %H:%M:%S') }}"
action: text.set_value
mode: single

Ballylad

https://www.boards.ie/discussion/comment/123766919#Comment_123766919

The battery supplier agreed to supply thicker cables.

Cuddlesworth

https://www.boards.ie/discussion/comment/123795375#Comment_123795375

Is it connected to the internet? If it's local, you might want to set up a local ntp server for it to reference.

championc

https://www.boards.ie/discussion/comment/123814620#Comment_123814620

I've never seen any NTP configuration, which is why people use the automation in Home Assistant to keep it correctly set

Abromavich

Yeah used HA time to set it. working perfect now

tnegun

There's an option for syncing time in the settings somewhere, but when I initially set mine up, it made no difference when enabled, so I settled on the HA automation, which has worked flawlessly for months. I've probably jynx'd it now!

blobert

Quick question:

I finally got a 3 phase smart meter installed yesterday. I have a very large setup of 40kw of pannels, 4 x 8kw Deye inverters and 60kw of batteries. I can import/export up to about 28kw of power I think.

Until I got the smart meter I was basing everything about using as much electricity as possible as I was only getting paid for deemed export.

Now I want to export everything I generate for FIT and run the house on night rate electricity and then the battery (charged at night rate) during the day while I export everything. Here's my settings at the moment:

When I change it to "Selling First" it exports the power being generated. However it also immediately starts discharging the batteries and exporting that power also.

Any idea how I can set it to export all PV generated power while running the house on battery power where possible.

I'm managing to charge the batteries to 100% at night but then during the day I just want to run on that while exporting all PV power.

Any help would be much appreciated!

Thanks

SD_DRACULA

https://www.boards.ie/discussion/comment/123849155#Comment_123849155

Simple, if the batteries are full then all excess gets exported anyway and then you change to selling first when you want to export from batteries as well

blobert

https://www.boards.ie/discussion/comment/123849596#Comment_123849596

Thanks for that.

The issue is that let's say I can charge the batteries for 12c at night and I get paid 20c for exporting solar.

If I charge the batteries at night and then run the house on battery power by day I'm running on cheaper electricity and exporting everything I generate at 20c. But if I am powering the house during the day using the PV power I'm missing out on getting 20c per kWh for this electricity and negating the need for the battery at all.

So I think it makes sense to charge the battery at night rate (and run heating etc where possible), then by day run the house on battery while exporting everything I make at a higher rate.

Let me know if it's possible to do this.