September 13, 20223 yr Hi Other than needing the same firmware, are there any other requirements to parallel two 5kW Sunsynk inverters? The price difference between the 5 kW and 8 kW inverter is significant, and I'm trying to determine if I can get away with buying one 5kw inverter now (mainly as backup power for loadshedding) and then, if needed, later on add a 2nd 5 kW inverter. Is there a risk that say for example 2 years down the line the "new" 5 kW inverter is not compatible with the "older" 5 kW inverter, making it impossible to upgrade? Any other disadvantages of have 2x 5 kW inverters vs a 8 kW?
September 14, 20223 yr 16 hours ago, Leonb said: Any other disadvantages of have 2x 5 kW inverters vs a 8 kW? Advantage 1x 8kW: Higher Amp rating on MPPT Advantage 2x 5kW: 2 additional MPPT, giving more flexibility regarding strings I personally would start off with 1x 5kW and later add a 2nd when funds are available. I don't think that anytime soon you will face the situation that a 'new' 5kW model will be out that cannot be paralleled with the current one Just make sure that you pull sufficient cables (especially for PV from inverter to roof) to cater for a later upgrade
September 19, 20223 yr Author On 2022/09/14 at 8:52 AM, wolfandy said: Advantage 1x 8kW: Higher Amp rating on MPPT Advantage 2x 5kW: 2 additional MPPT, giving more flexibility regarding strings I personally would start off with 1x 5kW and later add a 2nd when funds are available. I don't think that anytime soon you will face the situation that a 'new' 5kW model will be out that cannot be paralleled with the current one Just make sure that you pull sufficient cables (especially for PV from inverter to roof) to cater for a later upgrade Thanks. Just checking will a 540 watt panel (like JA solar, attached) work with this inverter? The current seems to be around the max allowed (~13A), so it seems they should. Although some sites selling this inverter states it cannot use a panel more than 460 watt. JAM72S30_525-550_MR_Global_EN_20200904A.pdf
September 19, 20223 yr 21 minutes ago, Leonb said: Thanks. Just checking will a 540 watt panel (like JA solar, attached) work with this inverter? The current seems to be around the max allowed (~13A), so it seems they should. Although some sites selling this inverter states it cannot use a panel more than 460 watt. JAM72S30_525-550_MR_Global_EN_20200904A.pdf 1.26 MB · 0 downloads those should work - inverter will clip anything over 13A. You would be limited to about 8 panels though based on those panels' VOC
September 22, 20223 yr On 2022/09/19 at 10:34 AM, Leonb said: Just checking will a 540 watt panel (like JA solar, attached) work with this inverter? The current seems to be around the max allowed (~13A), so it seems they should. Although some sites selling this inverter states it cannot use a panel more than 460 watt. Agree with @mzezman - they will work with the Sunsynk On 2022/09/19 at 10:56 AM, mzezman said: You would be limited to about 8 panels though based on those panels' VOC Depending on where you are, you might even get away with 9 in series. Maybe check the Victron MPPT calculator tool and also speak to your installer
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