SMA sunny boy 300tl

[Jacey1000]

Hi,

I've just acquired a SMA sunny boy 300tl from a grid tie system. Can I use the inverter in an off grid situation

 

[Hedges]

What is the exact model number? "300tl" doesn't sound familiar.

In general, a grid-tie inverter will not operate off-grid. It has to see in-spec sine wave on input for 5 minutes, then it ramps up and shoves all available power into the grid.

Some models will work off-grid as a batteryless inverter. SMA calls that "secure power".

What can be done with some models is "AC coupling" to a battery inverter that forms a grid. It is a great solution, but costs thousands of dollars in addition to the grid-tie inverter.

SMA's compatibility list for their grid-tie inverters to be used with Sunny Island battery inverter:

https://files.sma.de/downloads/SB-OffGrid-TI-US-en-22.pdf

 

[Jacey1000]

Hi, thanks for getting back to me so quickly.
The model number is SB 3000TL-20
And the serial number is 2100413746

Thanks for your help

 

[Jacey1000]

Hi, thanks for getting back to me so quickly.
The model number is SB 3000TL-20
And the serial number is 2100413746

Thanks for your help

Also I'm in the UK so that might be why it's not familiar to you

 

[Hedges]

The US market had what might be a related model SB 3000TL-US-22, on the compatibility list.

Data sheet for yours:

https://files.sma.de/downloads/SB5000TL-DEN110731W.pdf

https://www.sma.de/fileadmin/content/global/Solutions/Documents/Medium_Power_Solutions/SBPOSTER-AEN100430.pdf

I haven't found mention of "secure power", which is SMA's batteryless off-grid feature. But the similar US model does have that.
I haven't found a full manual, just data sheets.

 

[Jacey1000]

Thanks for helping out.
I did think it was a long shot