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

FlashSA said:
fixed

RELATED: Flip I get anxiety sitting at my desk without the 5min stats SunSynk tab open in my browser :ROFL:
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This is my worry... over thinking it and analyzing way too much.

It's also so impossible because of load shedding and balancing - while you might get the balance right one day, the schedule changes (or stage change) throws it out again :laugh::laugh::laugh:

At some point, gotta just go with the flow
 
I.am.Sam said:
so just spoke to a guy now

and the more you speak to people the more you get confused and decisions

whats the differenec between these cheaper systems cos the price of these name brands is increasing like crazy

one buddy said he is getting some 5kv inverter with a lithium battery for around 25k

solar panels will come to about 20k
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The main decision is this:
Do I want an inverter that only needs to power one set of loads(Behind inverter) via solar and battery
If yes:
Get an offgrid inverter ie Voltronic(Axpert), Growatt, Luxpower(SNA range), etc (Generally much cheaper)
If no: ie You want a bidirectional inverter that can supply solar/battery to multiple sets of loads(both before and after inverter) and feed back to the municipal grid where allowed
Get a bidirectional inverter like the Deye/Sunsynk/Luxpower(LX range),Victron

Additional flexibility summary:
Off Grid: Most can blend multiple power sources but are limited to max power of inverter
Bi-directional: Can blend multiple power sources but is not limited to max power of the inverter (AC Passthrough can be used)

You can go deeper into quality of components, MPPT support, etc. But generally I would say the above determines what you need to spend.
Most people go with the Deye/Sunsynk because it offers flexibility at a decent price
 
Willie Trombone said:
As a matter of interest...
Are there any risks of feeding back into the grid - not legally, but physically? I've heard mention of potentially killing a technician on the other end who is not expecting the system to be live, but my understanding is there's an open circuit so it's not going to feed back. Thoughts?
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Your understanding is wrong.
 
Willie Trombone said:
As a matter of interest...
Are there any risks of feeding back into the grid - not legally, but physically? I've heard mention of potentially killing a technician on the other end who is not expecting the system to be live, but my understanding is there's an open circuit so it's not going to feed back. Thoughts?
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In theory, there shouldn't be any risk, if a technician is working on the mains it should be shut off ahead of where he is working meaning your inverter does not back feed as it has detected the mains feed is down.
 
Willie Trombone said:
?
@RonSwanson can you elaborate?
Of course we all know things go wrong, but if I fed back into the grid, what are the chances of some Eskom techie on the other end getting zapped?
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Draw a quick picture of your inverter, & the grid. Live wire charged with 220V, anyone touching that live wire forms a circuit, the current travels through them and goes back to source, which is your inverter.
 
Willie Trombone said:
As a matter of interest...
Are there any risks of feeding back into the grid - not legally, but physically? I've heard mention of potentially killing a technician on the other end who is not expecting the system to be live, but my understanding is there's an open circuit so it's not going to feed back. Thoughts?
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You can't feedback if the grid is down (anti-islanding mode) so that's not an issue.
 
Willie Trombone said:
But does the inverter not stop feeding the grid if you're off at an upstream isolator / load shed, etc? What about a fault on just one line - would it stop feeding then?
Again, I understand this is theory and reality can differ... I'm trying to determine just how risky it is.
I'm not in the least interested in feeding back to the grid myself, just trying to determine the risk of others doing it (it seems quite common).
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Your inverter should pick up that the mains are down and not back feed as someone is working on the line and should have isolated the line they are working on. That is the theory anyway, as you say reality can be different like the the idiots that back feed generators via plug points.
 
Willie Trombone said:
But does the inverter not stop feeding the grid if you're off at an upstream isolator / load shed, etc? What about a fault on just one line - would it stop feeding then?
Again, I understand this is theory and reality can differ... I'm trying to determine just how risky it is.
I'm not in the least interested in feeding back to the grid myself, just trying to determine the risk of others doing it (it seems quite common).
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An inverter with NRS certification will monitor the grid and if it picks up that it is no longer present, will kill the grid side.
 
Willie Trombone said:
In the same vein, what would you guys consider to be the most risky scenario settings wise on these inverters. What combinations of settings would you regard as potentially inverter damaging / fire risk / other? Not referring to bad installs, but risky config...
i.e. if I was feeling uncharitable and had physical access to your inverter, what could I do from the control panel to really make your life miserable?
e.g. a delinquent tenant or overnight guest.

I must admit, I'm a little surprised these inverters don't have any form of authentication built in to the interface.
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Should not be possible with an inverter with an NRS 097-2-1 certification. That's why COCT keeps a list
 
1677845060626.png

This is what it should look like when you are exporting and the CT is correctly installed.

What it says is that there are 344w available for export but after the non-essentials have taken some (leds on ovens, Geyserwise system displays etc) 318 w is actually exported or pushed back into the grid.
 
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RonSwanson said:
Looks good. And it is pumping 674W to non-essentials.
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OK only, it's not exporting it to non essentials, it's exporting it to the grid. I can see the meter spinning backwards. So it's pick it up as non essentials when is exporting to grid
 
Fingerlessliz said:
OK only, it's not exporting it to non essentials, it's exporting it to the grid. I can see the meter spinning backwards. So it's pick it up as non essentials when is exporting to grid
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If it does not show at the top of the Grid Power block as a negative and you can see the meter running backwards, then you need to get your installer to come back and correctly install the CT.
 
RonSwanson said:
So if you go to System Mode 2 and untick Zero Export and tick Limit to loads, show us what it says on this screen?
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OK so if I set the settings in that manner, it will export from battery to charge grid. Is that normal? In the pics below I changed the relevant times lot from 100% to 80% just to demonstrate that this happens, which is obviously not what we want. It needs to discharge over night until it can charge during the day again, and only after fully charged must it export excess to the gridJPEG_20230303_141245_5817833993028848838.jpgJPEG_20230303_141301_6684767852656364480.jpgJPEG_20230303_141315_1953739980949966709.jpgJPEG_20230303_141325_1106525363979776591.jpg
 
Stonemason said:
If it does not show at the top of the Grid Power block as a negative and you can see the meter running backwards, then you need to get your installer to come back and correctly install the CT.
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These guys have already had to come back twice to fix their sh*t, so maybe I should just get a different, sunsynk approved electrician in..
 
Fingerlessliz said:
These guys have already had to come back twice to fix their sh*t, so maybe I should just get a different, sunsynk approved electrician in..
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The CT should exactly match the total export when the CT is correctly installed and yours does not. See the underline figures below

1677846358246.png
 
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