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

chickenbeef said:
Thoughts on the below kit/quote? Seems to be the best I've gotten so far.

View attachment 1511229

Geyser (3kW) will be on aux/non-essential until I add more batteries. Haven't seen my peak draw in the kitchen go over 3.5kW with our current usage patterns so planning to put that on essential. Other than that I don't have any other high power appliances like pool pumps or tumble dryers. Dishwasher maxes 2.2kW but I can manage it.

My roof is weirdly shaped so I'm trying to maximise the 1 portion of flat roof space I have (rectangular space, 3.8M x 8M) and then adding another string later on after getting more batteries. This portion of the roof is NE facing.

I would like 500-600W panels to maximise the space and also have some headroom for panel degradation but the supplier says it would be too much for the MPPT and I'm not seeing how. Bear with me if my calculations are off, I only started reading up about this on Saturday :ROFL:

The Sunsynk 8kW has 18A on the input with a range of 125-425V.

Canadian 545W
Voc: 41.5
Isc: 13.95
Dimensions: 2261 ˣ 1134

I should be able to fit 9 panels so:

41.5*9 = 373.5V which is in range of the MPPT.

Will this work?
Click to expand...
That price on the Sunsynk is very good. Which supplier? On the panels, I don't think you can maximize using higher W panels as the more W per panel, the bigger they are. I think it's all much of a muchness.
 
swakop_toe said:
@RonSwanson , we can take this via PM?
I wish to have my wife have insight on the SoC to plan/decide when to start dishwasher/cooking/etc.
Would this be an option for "view only"?
If yes, link to "how to", phuleeze?
I am not IT challenged, just a newbie with a Sunsynk 5kW for a week now, monitoring via the mobile app.
Thanks in advance.
Click to expand...
Consider Solar Assistant for more live updates. The Sunsynk / Solarman app will be out by a minute or 5... it's not realtime.
 
lkpat said:
Consider Solar Assistant for more live updates. The Sunsynk / Solarman app will be out by a minute or 5... it's not realtime.
Click to expand...
Thanks!
Is this a mere link to service/unlink from Sunsynk what-what or an additional "feed" to Solar Assistant?
Regardless, please post link where to start?
 
chickenbeef said:
Thoughts on the below kit/quote? Seems to be the best I've gotten so far.

View attachment 1511229

Geyser (3kW) will be on aux/non-essential until I add more batteries. Haven't seen my peak draw in the kitchen go over 3.5kW with our current usage patterns so planning to put that on essential. Other than that I don't have any other high power appliances like pool pumps or tumble dryers. Dishwasher maxes 2.2kW but I can manage it.

My roof is weirdly shaped so I'm trying to maximise the 1 portion of flat roof space I have (rectangular space, 3.8M x 8M) and then adding another string later on after getting more batteries. This portion of the roof is NE facing.

I would like 500-600W panels to maximise the space and also have some headroom for panel degradation but the supplier says it would be too much for the MPPT and I'm not seeing how. Bear with me if my calculations are off, I only started reading up about this on Saturday :ROFL:

The Sunsynk 8kW has 18A on the input with a range of 125-425V.

Canadian 545W
Voc: 41.5
Isc: 13.95
Dimensions: 2261 ˣ 1134

I should be able to fit 9 panels so:

41.5*9 = 373.5V which is in range of the MPPT.

Will this work?
Click to expand...
Prices quoted is decent but 545w panels would pair exceptionally well with a 8kw inverter. If you have limited roof space, rather go for the "stronger" panels, unless you can fit more 370 panels on seeing that they are much shorter and your roof might then allow 2 rows of panels instead of 1 row of the larger ones.
You can play around on open solar's website to see what would work best.
 
chickenbeef said:
Thoughts on the below kit/quote? Seems to be the best I've gotten so far.

View attachment 1511229

Geyser (3kW) will be on aux/non-essential until I add more batteries. Haven't seen my peak draw in the kitchen go over 3.5kW with our current usage patterns so planning to put that on essential. Other than that I don't have any other high power appliances like pool pumps or tumble dryers. Dishwasher maxes 2.2kW but I can manage it.

My roof is weirdly shaped so I'm trying to maximise the 1 portion of flat roof space I have (rectangular space, 3.8M x 8M) and then adding another string later on after getting more batteries. This portion of the roof is NE facing.

I would like 500-600W panels to maximise the space and also have some headroom for panel degradation but the supplier says it would be too much for the MPPT and I'm not seeing how. Bear with me if my calculations are off, I only started reading up about this on Saturday :ROFL:

The Sunsynk 8kW has 18A on the input with a range of 125-425V.

Canadian 545W
Voc: 41.5
Isc: 13.95
Dimensions: 2261 ˣ 1134

I should be able to fit 9 panels so:

41.5*9 = 373.5V which is in range of the MPPT.

Will this work?
Click to expand...
Excellent prices.
 
chickenbeef said:
Thoughts on the below kit/quote? Seems to be the best I've gotten so far.

View attachment 1511229

Geyser (3kW) will be on aux/non-essential until I add more batteries. Haven't seen my peak draw in the kitchen go over 3.5kW with our current usage patterns so planning to put that on essential. Other than that I don't have any other high power appliances like pool pumps or tumble dryers. Dishwasher maxes 2.2kW but I can manage it.

My roof is weirdly shaped so I'm trying to maximise the 1 portion of flat roof space I have (rectangular space, 3.8M x 8M) and then adding another string later on after getting more batteries. This portion of the roof is NE facing.

I would like 500-600W panels to maximise the space and also have some headroom for panel degradation but the supplier says it would be too much for the MPPT and I'm not seeing how. Bear with me if my calculations are off, I only started reading up about this on Saturday :ROFL:

The Sunsynk 8kW has 18A on the input with a range of 125-425V.

Canadian 545W
Voc: 41.5
Isc: 13.95
Dimensions: 2261 ˣ 1134

I should be able to fit 9 panels so:

41.5*9 = 373.5V which is in range of the MPPT.

Will this work?
Click to expand...
TL; DR: The 370W panels are better in the long term when you want to expand your array to take full advantage of the 10400W Max PV power of the Sunsynk.
 
RonSwanson said:
TL; DR: The 370W panels are better in the long term when you want to expand your array to take full advantage of the 10400W Max PV power of the Sunsynk.
Click to expand...

So to confirm, I can have this string of 10x 370W and then add another string of 6x370W later (have a smaller 5mx5m space which can accommodate a max of 6 panels)

1681919968321.png

6x40.8v = 244.8V

Which is higher than the startup voltage:

1681919989129.png
 
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1681919385346.png

Consider a situation where you want to have panels in parallel as well as series. With the 545W it is borderline, 27.9A at 25 degrees (and it increases with heat), of which about 7 amps are thrown away due to clipping, so you lose 280W per panel before you have even generated 1W. Worst case you blow your MPPT due to exceeding the 28Adc limit.
With the 370W panels, the loss is going to be .54A, so roughly 21.6W per panel and 23.08A is well within the 28A limit.
 
chickenbeef said:
So to confirm, I can have this string of 10x 370W and then add another string of 6x370W later (have a smaller 5mx5m space which can accommodate a max of 6 panels)

View attachment 1511255

6x40.8v = 244.8V

Which is higher than the startup voltage:

View attachment 1511257
Click to expand...
Make sure that you use the latest 8K Sunsynk manual.
Here is a very good guide, I suggest starting a spreadsheet which will allow you to compare panels https://unboundsolar.com/blog/string-sizing-guide
 
swakop_toe said:
Thanks!
Is this a mere link to service/unlink from Sunsynk what-what or an additional "feed" to Solar Assistant?
Regardless, please post link where to start?
Click to expand...
You can replace the Sunsynk dongle with Solar Assistant and get your stats in a more real-time way. You would need to get a cable for your inverter and the software and a raspberry Pi. They sell it all: HTTPS://solar-assistant.io
 
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I've ordered an 8kw sunsynk and I'm trying to figure out the panel size and layout. I've read the string guide posted a few posts up (thanks Ron!) but what I don't quite understand is with the 8kw sunsynk there are two MPPTs but as far as I can tell each MPPT can take two strings. How does this work?
 
lkpat said:
You can replace the Sunsynk dongle with Solar Assistant and get your stats Ina more real-time way. You would need to get a cable for your inverter and the software and a raspberry Pi. They sell it all: HTTPS://solar-assistant.io
Click to expand...
Ooohkay, thanks.
Just had a box(25) RPis 4B8GB from Auz imported as ZAR and RS-Online's ETA is "best effort".
Was hoping for an online/web alternative.
So, here we go, self-provisioning in the most southern point of Afrikakakak.
 
swakop_toe said:
Ooohkay, thanks.
Just had a box(25) RPis 4B8GB from Auz imported as ZAR and RS-Online's ETA is "best effort".
Was hoping for an online/web alternative.
So, here we go, self-provisioning in the most southern point of Afrikakakak.
Click to expand...
It's a lot more secure than a cloud based solution from China :)
 
Harmonic said:
I've ordered an 8kw sunsynk and I'm trying to figure out the panel size and layout. I've read the string guide posted a few posts up (thanks Ron!) but what I don't quite understand is with the 8kw sunsynk there are two MPPTs but as far as I can tell each MPPT can take two strings. How does this work?
Click to expand...

Its just a way of separating the strings and cabling. There's still only 2 mppts. But you can run one string east and one west on the same mppt as an example.

Or you can run 2 strings to lessen the current on the cabling with both strings facing the same direction.
 
lkpat said:
It's a lot more secure than a cloud based solution from China :)
Click to expand...
I am sure it is.
And the manpower and risk to manage and maintain it all is on you alone.
Yes, I get it. And I appreciate your input, immensely. I am perhaps just to k#k lui om nog boksies en goedjies te manage vs. day-2-day challenges to raise two toddler boys in 2023 and beyond.
Ranting, ignore me.
You okes are imparting on immeasurable time and knowledge.

Ngibona kakhulu!
 
swakop_toe said:
I am sure it is.
And the manpower and risk to manage and maintain it all is on you alone.
Yes, I get it. And I appreciate your input, immensely. I am perhaps just to k#k lui om nog boksies en goedjies te manage vs. day-2-day challenges to raise two toddler boys in 2023 and beyond.
Ranting, ignore me.
You okes are imparting on immeasurable time and knowledge.

Ngibona kakhulu!
Click to expand...
Give the standard Sunsynk app a go if you want and make up your mind about Solar Assistant later. Most of us did that. Just bear in mind that anyone with your dongle serial number can make updates to your system.
 
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