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Sunsynk 8kw Inverter Passthrough


Leshen
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Just a quick demo to show the passthrough function of the Sunsynk 8kw. 
 

Inverter is maxed out at 8000w and it uses the remainder 1200w from Eskom. This passthrough occurs on the Essential side of the Inverter up to a max of 90A. 
 

We powered 2 kettles, 2 microwaves, a hairdryer and a DAB booster pump with a total of 9200w for the demo. 

CF463A02-2F45-44CB-85ED-C9A0981DC09E.jpeg

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2 hours ago, leshen said:

Just a quick demo to show the passthrough function of the Sunsynk 8kw. 
 

Inverter is maxed out at 8000w and it uses the remainder 1200w from Eskom. This passthrough occurs on the Essential side of the Inverter up to a max of 90A. 
 

We powered 2 kettles, 2 microwaves, a hairdryer and a DAB booster pump with a total of 9200w for the demo. 

CF463A02-2F45-44CB-85ED-C9A0981DC09E.jpeg

Did the same a while ago. 

Only question that I still have, is the total inverter capacity therefore 35A (from pv or battery) + 90A (pass through from grid)? 

 

Edit 

That would be over 27kw. Not that I'll ever be able to test this. 

Edited by Achmat
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9 hours ago, Achmat said:

Did the same a while ago. 

Only question that I still have, is the total inverter capacity therefore 35A (from pv or battery) + 90A (pass through from grid)? 

 

Edit 

That would be over 27kw. Not that I'll ever be able to test this. 

No, total max is 90A

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10 hours ago, Achmat said:

Did the same a while ago. 

Only question that I still have, is the total inverter capacity therefore 35A (from pv or battery) + 90A (pass through from grid)? 

 

Edit 

That would be over 27kw. Not that I'll ever be able to test this. 

90A is absolute peak current

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  • 3 weeks later...
3 hours ago, Frost said:

Does this mean you can still use your generated power from the pv even if you go above the max output of the inverter?

They told me as soon as you hit the max of the inverter the passthrough all goes to the grid ?

The inverter can only invert up to its rating (i.e. convert DC from PV or battery to AC), but it can pull in extra PV from the grid if necessary. 

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30 minutes ago, Speedster said:

The inverter can only invert up to its rating (i.e. convert DC from PV or battery to AC), but it can pull in extra PV from the grid if necessary. 

It definitely doesnt pull in extra PV from the grid. What it will do is use the grid to supplement anything over 8kw or 5kw which is the passthrough function. This passthrough is on the essential side. 

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2 minutes ago, Solarsmit said:

Good day, I have a client that would want to get a SUNSYNK installed on his premises. I normally use GROWATT. The 8kW PV power, is it per MPPT or is it in total, both MPPT together?

 

The sunsynk can take 10.4kw of solar panels in total. 5.2kw per MPPT. Volts need to be under 500v per MPPT and 2 strings per MPPT with 22A per MPPT on new versions and 18A on older units. 

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  • 2 weeks later...

Hi Gerrie

I am sure to feed non-essential loads coupled to grid directly during load shedding will not be possible as this will cause the power to be fed back into the grid.

The answer to fix this would be fit a separate change over switch to disconnect from the grid and add it to the non essentials or a generator, however this would be difficult and could overload the inverter combined with other problems.. 

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10 minutes ago, Peter Topp said:

feed non-essential loads coupled to grid directly during load shedding will not be possible

Hi Pieter i did some reading on the forum and it seems if one would use the auxiliary output it seems to be possible to power the non-essential loads if the battery is above 60%. If this is possible I am planning a installation where the DB will be split into three namely, essentials, non-essentials and grid only loads. I want the luxury of powering non-essentials if batteries have enough capacity. I did read however there were guys complained of the aux power output dipping and loads like computers and TV’s switched off when this happened, this is something I want to avoid.

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Hi

Yes it is possible as mentioned as the aux output is not coupled directly to the grid.

The non essential load are usually to me are mainly higher current loads (geyser, stove, aircon etc.) and this could be a problem as these would add many KW' s as load and you are limited to the inverters output spec. not only the battery capacity as well as the problem of dipping which I do not think is resolved.

 

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23 hours ago, Gerrie said:

If Eskom is load-shedding at night can the non-essential loads on the Sunsynk also be fed from the batteries if their is a need to use non-essentials, or is this not possible?

Yep as @Peter Topp has stated, but not on loads before the inverter, you would use the Aux output (if not used as a genny input). The options and versatility of Sunsynk inverters are quite amazing.

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1 hour ago, YellowTapemeasure said:

Yep as @Peter Topp has stated, but not on loads before the inverter, you would use the Aux output (if not used as a genny input). The options and versatility of Sunsynk inverters are quite amazing.

On this point - are the loads before the inverter able to be set to only use PV while using both PV and battery for load and smart-load/aux?

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Hi Speedster

As far as I know you can set to export or feedback power and can be set at a specific setting. This is only possible if there is excess pv power not used by the battery, load and aux. This is the setting that uses the ct value to stop or allow exporting of power back to the grid. You cannot also export power if there is no grid power available (load shedding etc).

The only other way to export power is switch off the output load and set the inverter to export all  pv power to the grid and non essentials tied to the grid.

Edited by Peter Topp
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I think what I'm trying to find out is if the following is possible:

  • Load: Essential circuits powered from all available sources
  • Aux: Non-essential circuits but which can be powered from battery too
  • Before inverter: Non-essential circuits which only run off PV (if sufficient), such as pool pump.
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