question

groningen avatar image
groningen asked

MPPT 30% over panelling rule or can we go higher?

Dear All

I would like to know if the 30% over panelling is "set in stone".

Lets say I use a 150/45 MPPT. If I install six (6) 600W, the total will be 3600W.

The spec from Victron is 2600W, however, the VOC will be +- 120V.

Will this be OK i.e. the MPPT will clip the amps during summer, but in winter, I will benefit of the over panelling?



MPPT Controllers
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
JohnC avatar image
JohnC answered ·

Hi @Groningen

No, it's not set in stone. For example if you were to use 12V batteries you'd be overpanelled by some 600%. And it would still work fine.

But don't exceed the Voc and Isc limits with the panels.

1 comment
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Alexandra avatar image Alexandra ♦ commented ·
@Groningen

As @JohnC said.

You can do what you like as long as you don't break the input current limit and the input VOC limit at minimum temperatures.

0 Likes 0 ·
groningen avatar image
groningen answered ·

@JohnC @Alexandra


OK, thank you for the clarification.

2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.