All things Sunsynk (Deye, Inge, etc...)

Kosmik said:
So just a quick glance at the settings, from my understanding, for the inverter to fedback succesfully, two criteria are needed:

1. Detections draw from the grid so that the system is aware how much it can safely provide.
2. It must output at a higher voltage than the incoming grid to prevent draw from the grid.

Looking at the below when clicking grid

View attachment 1498603

It's showing zero grid and zero CT. Now and then there is a 10w on the grid but CT is flat zero. The LD I assume is the load circuit and that seems about right for what's running right now and I can see it fluctuate as things like my washing machine motor kick in.

Looking at the grid setting, it's configured to output at 230, which is LESS than my supply.

View attachment 1498605

I asked the sparkie originally if the inverter would be able to sense the grid voltage and adjust its output but this seems like it overrides that.

@Speedster can you shot those screens on yours? First is the grid and second is settings/grid settings.
Click to expand...

The CT clamp is used for a number of things. It measures power coming in from the grid.
It measures and allows the inverter to maintain a small draw(configurable) when the inverter is running the non-essentials from solar/PV
It measures the grid export if that's set.

The inverter voltage is only used in islanding mode. It syncs with the grid voltage under other modes.
 
B-1 said:
The CT clamp is used for a number of things. It measures power coming in from the grid.
It measures and allows the inverter to maintain a small draw(configurable) when the inverter is running the non-essentials from solar/PV
It measures the grid export if that's set.

The inverter voltage is only used in islanding mode. It syncs with the grid voltage under other modes.
Click to expand...
Also worthwhile to note that CT clamp is only used/necessary if there are non-essential loads before the inverter. If you only have essentials then the CT is redundant.
 
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Willie Trombone said:
No, the battery is charged with DC. The same cable that it uses to supply is used to charge.

Even if you're charging from Eskom, the inverter is feeding DC to the battery.
Click to expand...
I don't know the Deye/Sunsynk setup so will leave that to you guys. On the Victron you set the AC amps to restrict the draw from the grid. This is a requirement from CoCT.
 
Speedster said:
Also worthwhile to note that CT clamp is only used/necessary if there are non-essential loads before the inverter. If you only have essentials then the CT is redundant.
Click to expand...
I've got geyser, stove , pool and secondary aircon on non load, so I assume the incoming is split as suggested by @Willie Trombone ( I think said it ) with parallel runs to each of those isolators and the inverter in feed. So the CT should actually be at the exit of the mains switch before the parallels. The inverters do seem to have their own ct's which is what I think you mean about not needing one if everything is load. Also why one ofbthe suggestions is that the ct should be wired on ct2 on the inverter.
 
Kosmik said:
So just a quick glance at the settings, from my understanding, for the inverter to fedback succesfully, two criteria are needed:

1. Detections draw from the grid so that the system is aware how much it can safely provide.
2. It must output at a higher voltage than the incoming grid to prevent draw from the grid.

Looking at the below when clicking grid

View attachment 1498603

It's showing zero grid and zero CT. Now and then there is a 10w on the grid but CT is flat zero. The LD I assume is the load circuit and that seems about right for what's running right now and I can see it fluctuate as things like my washing machine motor kick in.

Looking at the grid setting, it's configured to output at 230, which is LESS than my supply.

View attachment 1498605

I asked the sparkie originally if the inverter would be able to sense the grid voltage and adjust its output but this seems like it overrides that.

@Speedster can you shot those screens on yours? First is the grid and second is settings/grid settings.
Click to expand...
Here we go

20230326_131235.jpg20230326_131335.jpg
 
Kosmik said:
Hmm so yours is running fully of solar at the mo.

Could you shot the two sections? Hit the grid in top right for one and then the cog and grid settings for the other.

Yours in all load config or have a split?
Click to expand...
Mine is all on load.

20230326_134104.jpg20230326_134121.jpg
 
I see yours doesn't have the inverter out setting either.

I think I found what the inverter is outputting it's voltage at. On the home section there is L which is a higher value than the grids input voltage.

Grid

20230327_075725.jpg

Home

20230327_075712.jpg
 
Kosmik said:
I see yours doesn't have the inverter out setting either.

I think I found what the inverter is outputting it's voltage at. On the home section there is L which is a higher value than the grids input voltage.

Grid

View attachment 1499053

Home

View attachment 1499055
Click to expand...
I don't get why your load is reported at 0W. Something seems amiss there.

Also, what inverter out setting?
 
Speedster said:
I don't get why your load is reported at 0W. Something seems amiss there.

Also, what inverter out setting?
Click to expand...
This one.

Mine

1679899782096.png

Vs yours

1679899817821.png

But that could be because I have non essential loads whereas yours are all load? I agree about the power, hopefully they contact me today for the final config.
 
Kosmik said:
But that could be because I have non essential loads whereas yours are all load? I agree about the power, hopefully they contact me today for the final config.
Click to expand...
Don't accept it. You're paying money and it needs to be done properly. Else contact the rental company and tell them to come collect their stuff because you're not getting what you pay for.

The way it's connected is basically just a load shedding backup system with PV charging the batteries instead of grid...
 
Mike Hoxbig said:
Don't accept it. You're paying money and it needs to be done properly. Else contact the rental company and tell them to come collect their stuff because you're not getting what you pay for.

The way it's connected is basically just a load shedding backup system with PV charging the batteries instead of grid...
Click to expand...
100%, no signoff or payment until its sorted. The rental company is quite a stickler as the techs had to take constant photos etc, so I'm sure they will crack them as well. Either way, no payment until satisfied but they also haven't signed off the installation yet.
 
For those with two or more batteries, what are your charge and discharge amperage set at? I know it depends on how many batteries you have, the C rating and perhaps capacity, but I am interested to see the numbers. Mine is currently at 60A and 80A with the two Sunsynk 5.32 kWh batteries.
 
Last edited:
DawieZA said:
For those with two or more batteries, what are your charge and discharge amperage set at? I know it depends on how many batteries you have, the C rating and perhaps capacity, but I am interested to see the numbers. Mine is currently at 60 and 80 for two Sunsynk 5.32 kWh batteries.
Click to expand...
I know this isnt answering your question but just giving you the theory so you can calculate your own.

There are 4 things you need to look at:
1. What is the max charge rate of my inverter (5kw inverter is 125a, not sure on the 8kw)
2. What is my fuse size between inverter and battery bank
3. What is my cable size between inverter and battery bank
4. What is the c rating of my battery (c rating multiplied by battery quantity)

Basically the lowest value of any of those will be the max you can set your charge amperage at.
There are other factors as well, like if you have multiple batteries on a common busbar, is the busbar big enough ie enough copper for the amperage, the circuit breaker value on your battery itself, etc.
But generally the above 4 will give you the best indication.
 
Thanks for the guidance.

I have the 5kW inverter and it looks like 120A max for charging and discharging, when reading the label on the side. I can see 160A/120kA/500V on the fuses between the batteries and the inverter. Cable size between the batteries and inverter looks to be 35mm. The batteries have a 1C rating according to their specifications sheet.

Both my batteries terminate into the bottom of the fuse box/holder, there is no busbar.

I am waiting on feedback from my installer but thought I would pose the question regarding charge and discharge amperage here as well. Would like to confirm that I can make use of the full capacity of my inverter if needed and not be limited by my battery settings.
 
Can you not just leave it at max and let the BMS control things?
 
Side note, got the installer coming through tomorrow. Lets see what he says but as many have said here, observing the system shows it is purely charging its batteries, nothing else.
 
DawieZA said:
Thanks for the guidance.

I have the 5kW inverter and it looks like 120A max for charging and discharging, when reading the label on the side. I can see 160A/120kA/500V on the fuses between the batteries and the inverter. Cable size between the batteries and inverter looks to be 35mm. The batteries have a 1C rating according to their specifications sheet.

Both my batteries terminate into the bottom of the fuse box/holder, there is no busbar.

I am waiting on feedback from my installer but thought I would pose the question regarding charge and discharge amperage here as well. Would like to confirm that I can make use of the full capacity of my inverter if needed and not be limited by my battery settings.
Click to expand...
Great, looks like you are safe to do the max amps the inverter supports ie 120a
 
ghaye said:
Can you not just leave it at max and let the BMS control things?
Click to expand...
If all the supporting items are there then yes, but if say 16mm cable was used and you said max amps, and your bms said its fine to send me 120a, it would be too much for the cable.
 
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