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

RonSwanson said:
Both tier one, with good warranties, you will not be disappointed. You might want to take a look at the specs of both to determine which is optimal for the 8K Sunsynk, considering the current limitations.

You will want to be able to parallel two series strings for the bigger MPPT controller, so two panels' ISC should be as close as possible to 20A but not exceed 21A or so, otherwise it will be clipped.
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Thanks!

Looks like I should be fine with either, the inverter is 18A x 2 so I should still have a bit of room to expand if my napkin maths is correct.
 
DrJohnZoidberg said:
Thanks!

Looks like I should be fine with either, the inverter is 18A x 2 so I should still have a bit of room to expand if my napkin maths is correct.
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That's the written specs. They upgraded it to 22A, then they downgraded it again to about 20.5 to 21A for stability reasons. Even today no-one knows the true value.
 
DrJohnZoidberg said:
Yep. Problem is getting stock of the Sunsynk batteries at the moment, I'm waiting for them to get back to me on when the next lot is coming in.

You know anything about panels? Just curious if there is much difference between brands, specifically the JA Solar vs Canadian Solar? Both 540W panels.
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Who are you getting batteries from? Some of the big installers have stock. Check on the Sunsynk Installers and Users Facebook group.

Regarding the panels there's probably at most 1%-3% performance difference between them with the same warranty periods. So get the one that is cheaper. These are popular panels and sizes so they will be around when you need more.
 
milan188 said:
Who are you getting batteries from? Some of the big installers have stock. Check on the Sunsynk Installers and Users Facebook group.

Regarding the panels there's probably at most 1%-3% performance difference between them with the same warranty periods. So get the one that is cheaper. These are popular panels and sizes so they will be around when you need more.
Click to expand...

I spotted this on instagram which is interesting…

IMG_1021.jpg
 
I have a 5KW Sunsynk inverter and looking to add some solar panels. I am getting a bit tripped up with the calculations though. According to my calculations, for a voltage limit of 450V, I can do 9 x 660W Canadian Solar panels. Is the voltage limit per MPPT? Meaning, I could actually add 10 panels, 5 on each MPPT?
 
Archie1 said:
I have a 5KW Sunsynk inverter and looking to add some solar panels. I am getting a bit tripped up with the calculations though. According to my calculations, for a voltage limit of 450V, I can do 9 x 660W Canadian Solar panels. Is the voltage limit per MPPT? Meaning, I could actually add 10 panels, 5 on each MPPT?
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Voltage is per mppt and you need to use the VOC of the specific panels in the calc.
 
Mzezman said:
Voltage is per mppt and you need to use the VOC of the specific panels in the calc.
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Thank you. Yes, I did get the data sheets and used that in the calculations.

Finally, I presume that the inverter will limit the KW coming in from the panels to around 5KW on the critical and non critical loads combined?
 
Archie1 said:
Thank you. Yes, I did get the data sheets and used that in the calculations.

Finally, I presume that the inverter will limit the KW coming in from the panels to around 5KW on the critical and non critical loads combined?
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Max DC will be 6500w (from the panels) but it will limit the DC to AC to 5kw when there is no grid. If the grid is available it can pass through up to about 7.5kw to anything connected to it
 
Mzezman said:
Max DC will be 6500w (from the panels) but it will limit the DC to AC to 5kw when there is no grid. If the grid is available it can pass through up to about 7.5kw to anything connected to it
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That's very useful info. Thanks so much for your help :)
 
Archie1 said:
I have a 5KW Sunsynk inverter and looking to add some solar panels. I am getting a bit tripped up with the calculations though. According to my calculations, for a voltage limit of 450V, I can do 9 x 660W Canadian Solar panels. Is the voltage limit per MPPT? Meaning, I could actually add 10 panels, 5 on each MPPT?
Click to expand...
I'm have the same inverter and must also start looking at panels sometime in the new year. I would be interested to hear what you end up going with, who u buy from, price, etc.
 
Mzezman said:
Max DC will be 6500w (from the panels) but it will limit the DC to AC to 5kw when there is no grid. If the grid is available it can pass through up to about 7.5kw to anything connected to it
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Just to be clear, that pass through is AC to AC? The DC to AC limit is still 5kw?
 
Neuk_ said:
Just to be clear, that pass through is AC to AC? The DC to AC limit is still 5kw?
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DC to AC is still limited to 5kw, you are correct. The max pass through as I've seen it is any AC going through inverter to other devices connected to inverter when could be batteries (DC) or other AC devices. Happy to be corrected though
 
Mzezman said:
DC to AC is still limited to 5kw, you are correct. The max pass through as I've seen it is any AC going through inverter to other devices connected to inverter when could be batteries (DC) or other AC devices. Happy to be corrected though
Click to expand...

AC to DC for batteries will still be limited to 5kw as I understand it, the pass through is only AC to AC from grid to consumers.
 
Archie1 said:
I have a 5KW Sunsynk inverter and looking to add some solar panels. I am getting a bit tripped up with the calculations though. According to my calculations, for a voltage limit of 450V, I can do 9 x 660W Canadian Solar panels. Is the voltage limit per MPPT? Meaning, I could actually add 10 panels, 5 on each MPPT?
Click to expand...

660w panels are not a good match for the 5kw sunsynk. They have a Max current of 18a which exceeds the 11amp of the 5kw MPPT controller so you won't ever get the full wattage of the panels.
 
B-1 said:
660w panels are not a good match for the 5kw sunsynk. They have a Max current of 18a which exceeds the 11amp of the 5kw MPPT controller so you won't ever get the full wattage of the panels.
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Thanks for letting me know. My installer mentioned that the North facing side of the roof has space for about 10 panels. What would you recommend to maximise efficiency? Taking into account that in the next year or so I will add another 5KW inverter?
 
Archie1 said:
Thanks for letting me know. My installer mentioned that the North facing side of the roof has space for about 10 panels. What would you recommend to maximise efficiency? Taking into account that in the next year or so I will add another 5KW inverter?
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Size wise its difficult to recommend something and it takes some effort to work out if you want to maximise the space you have. What I did was measure the roof and then picked a number of panels of different sizes and aspect ratios and drew each of them onto a scaled drawing of the area to fit as much as I could. I've also seen software where you outline your roof on Google earth and it recommends something for you but I don't remember where.

In terms of what will work you need to take the following into consideration:
Each MPPT is specified as 370v(100vmin-500vmax) 11a 125v-425v working range
So in a perfect world your total voltage for Vmp should be around 370v as this is where its most efficient
Your total Voc should be roughly 450v or less(500v Max with some safety margin)
And the panel string should be under 11a.
 
B-1 said:
Size wise its difficult to recommend something and it takes some effort to work out if you want to maximise the space you have. What I did was measure the roof and then picked a number of panels of different sizes and aspect ratios and drew each of them onto a scaled drawing of the area to fit as much as I could. I've also seen software where you outline your roof on Google earth and it recommends something for you but I don't remember where.

In terms of what will work you need to take the following into consideration:
Each MPPT is specified as 370v(100vmin-500vmax) 11a 125v-425v working range
So in a perfect world your total voltage for Vmp should be around 370v as this is where its most efficient
Your total Voc should be roughly 450v or less(500v Max with some safety margin)
And the panel string should be under 11a.
Click to expand...
Ok noted, will amend the calculations and see what I get. I did read though that Sunsynk updated the firmware and somehow the MPPT can now handle up to 13a.
 
Archie1 said:
Thanks for letting me know. My installer mentioned that the North facing side of the roof has space for about 10 panels. What would you recommend to maximise efficiency? Taking into account that in the next year or so I will add another 5KW inverter?
Click to expand...
If you buy from a reputable and knowledgeable supplier like the Powerforumstore, they will do this all for you, because they have a reputation to protect and all the tools to model it.
Otherwise, if you enjoy playing around, there are tools available like this:
 
Archie1 said:
Ok noted, will amend the calculations and see what I get. I did read though that Sunsynk updated the firmware and somehow the MPPT can now handle up to 13a.
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And then they downgraded it again to around 12A. Even their own support team cannot give a straight answer on what it is today.
 
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