Inverter comfirmation???

[Iain]

Hi
Just a quick question, Have kept up with most of the inverter sizing problems on here so hope I am in the right ballpark!

My mate has just been quoted for a system
8x perlite 250 mono West facing
8x Perlite 250 mono South facing.
The installer has sugested a SMA sb3800V. I believe this is a single imput inverter so I don't think it will be suitable.
I have been messing around on Sunny Design and have worked out some options.
2x sb1700 which gives 2983kWh/yr
1x3600tl-20 which gives 3472kWk/yr
1x sb4000tl-20 which gives 3502kWh/yr

I assume the 4000 might be oversize for the DNO but understand it can be limited to the 16A via the inverter settings
I also believe the 3600tl-20 the same inverter as the 4000 and is doing this limiting automatically

Would I be correct in thinking the SB3600tl-20 would be the most suitable and most acceptable to the DNO.
I think the company sticks to SMA unless that is all they can get at the moment.
Am I right in thinking the sb3800v would not be suitable for the 2 different panel orientations(I assume they would have 2 strings to the single tracker as 1 string would be overvoltage)
Any other recomends for a 2 mppt inverter for this west/south setup
I just wanted to give my mate a bit more info and a possible alternative sugestion.
Iain

[BruceB]

Correct.  A single mppt inverter like the 3800V is not suitable.  I have not repeated the modelling, but from your figures the 4000TL looks good.
Regards
Bruce

[Anony999]

+1 BruceB

And to add the 4000TL can be limited, your installed just needs a blue tooth laptop and the grid guard code (with knowledge :-) ) to do this

If this is done and noted on the G83 / paperwork then the DNO have no problem accepting it

Some DNO's also ask for a screen shot of the setting change

[GavinA]

3600TL is essentially the same as a 4000TL limited to 3680W AC (ok I think they've actually slightly reduced the DC input capability as well, but that's only going to be a factor in a very limited number of situations).

We've switched across to them from next week almost entirely from the 4000TL.

[Iain]

Hi
Thanks to all of your replies.
I have contacted the installer and he has confirmed that they had made a printing error on the quote about the SB3800V(copied from a previous quote by mistake). I talked to SMA as well today and they confirmed the SB3600tl-20 would be ideal. The installer hasn't used one of these before so is checking availability of both this and the SB4000tl-20. Our DNO is happy with the 4000 so whichever is available will do
Thanks again for all your input.
Iain