8Kw Sunsynk inverter max panels

andre greyling

andre greyling

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I have installed a 8kw Sunsynk inverter with ten 545W Mono PERC HiKU EVO2 panels and 5.32kwh Sunsynk battery
What is the max number of these panels I can extend to if needed?
 
TBH your batteries are out of line with your panels now. I have 12 535w panels with 4 batteries 5.5kw each, forget about more panels maybe two if you need more rather get more batteries. Im typically done charging mine by midday or 2 pm winter

Snyper's Solar Farm

Hi all, I am finally getting round to making this thread. After loads of research and another bout of load shedding I finally decided to pull the trigger and load shed Eskom. Prior to going solar I already had all the lights on LEDs, house is kitted with energy efficient appliances and...
mybroadband.co.za mybroadband.co.za
 
Spec says 10400W is max MPPT input. 10400 / 545 = 19 panels

But you can also overprovision as long as you don't exceed MPPT voltage limits.
 
Snyper564 said:
TBH your batteries are out of line with your panels now. I have 12 535w panels with 4 batteries 5.5kw each, forget about more panels maybe two if you need more rather get more batteries. Im typically done charging mine by midday or 2 pm winter

Snyper's Solar Farm

Hi all, I am finally getting round to making this thread. After loads of research and another bout of load shedding I finally decided to pull the trigger and load shed Eskom. Prior to going solar I already had all the lights on LEDs, house is kitted with energy efficient appliances and...
mybroadband.co.za mybroadband.co.za
Click to expand...
Yea adding more panels if batteries are full 10-11am
Is just a waste of money

Shifting loads is the intermediate step

Or setting the priority to load then battery

So you get more out of the panels and only finish charging later ie 2pm like your setup

If you struggle to get them full is where you need to pivot back to panels again
 
leon.davibe said:
Yea adding more panels if batteries are full 10-11am
Is just a waste of money

If you struggle to get them full is where you need to pivot back to panels again
Click to expand...
TBH if you are not full by 11am with that system something is wrong shade bad angle etc. Dont worry about all the dark days even if you 10x your panels its not worth it batteries are what you want
 
andre greyling said:
I have installed a 8kw Sunsynk inverter with ten 545W Mono PERC HiKU EVO2 panels and 5.32kwh Sunsynk battery
What is the max number of these panels I can extend to if needed?
Click to expand...
There is no theoretical limit on the number of panels as long as you manage to stay within the acceptable open circuit voltage (Voc) of the inverter.

You could have 1MW of panels but the inverter will only draw 300W if that's all that's required.
 
Yea full shading isn't that bad, on single panels at a time

Partial shading is the string killer
 
leon.davibe said:
Yea full shading isn't that bad, on single panels at a time

Partial shading is the string killer
Click to expand...
My understanding is that if a single panel in a string is completely shaded that string is effectively dead.

If its 50% shaded string is 50% down
25% shaded string is 25% down
 
Snyper564 said:
My understanding is that if a single panel in a string is completely shaded that string is effectively dead.

If its 50% shaded string is 50% down
25% shaded string is 25% down
Click to expand...
Yea i have that yotally shaded the byoass diode would prevent it dragging down the whole string

But partulially shaded then the whole strings gets limited to said amps of semi shaded panel

Hence kills the output drastically

Unless i got the principle wrong
 
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