Photovoltaic PV connection ???

[phil59]

Between 5 and 100m, the section will not support the same at all.

The section supports the same whatever the length of the cable...
It's just that the losses by Joule effect end up making that over too great a distance there is nothing left at the end.

Yes!

[chris34]

Thanks for all your quick responses! :-)

Details my PV date from 2011 (it makes them 12 years). It's true that I could have kept them a little longer but I've just had a small return of pesetas .... It's also true that returns have nothing to do with it.

I will dig on the technical docs to see the characteristics of the chargers / regulators ....
My distances do not exceed 5 meters ...

C.

[Christophe]

If you have extra pesetas and spare space, then keep the old string and add an inverter (if necessary)

[phil59]

Thanks for all your quick responses! :-)

Details my PV date from 2011 (it makes them 12 years). It's true that I could have kept them a little longer but I've just had a small return of pesetas .... It's also true that returns have nothing to do with it.

I will dig on the technical docs to see the characteristics of the chargers / regulators ....
My distances do not exceed 5 meters ...

C.

If I were in your case, and as I have the space, I would add more, but would not replace.

[chris34]

.... my current concern is to choose CHARGERS (Regulators) therefore between the PV and my battery pools. I have 2 PWMs and an MPPT currently, but I'm thinking of ending only MPPTs...

[chris34]

...well, no, precisely I don't have much space!!

[sicetaitsimple]

Details my PV date from 2011 (it makes them 12 years). It's true that I could have kept them a little longer but I've just had a small return of pesetas .... It's also true that returns have nothing to do with it.

Beyond your personal case, and of course you do what you want, it still brings me some questions.
"The PV industry", in the broad sense, does not stop communicating on performances that are little affected over time (I have in mind an order of magnitude of more than 80% of the guaranteed peak power after 20 years) and a lifetime well above this value of 20 years.
It would be rubbish, we will necessarily replace these panels at the deadline or before? In which case we would have made unequipped electricity consumers pay substantial and fixed purchase prices for 20 years without benefiting for let's say 10 more years from a minimum cost price, the capital being amortized?
In short, a PV installation under feed-in tariff would only last the period of the feed-in tariff?

PS: once again, I'm not targeting Chris34 who also seems to be on an isolated site, so nothing to do.

[Christophe]

Ah indeed if on battery it changes the situation...

That's why I asked for an update diagram...

[chris34]

Correct: I forgot to specify. : I am in an ISOLATED SITE!!!!
So my PV feed my batteries via ... my future REGULATORS ;-)

So, yes OK: I'm doing a little diagram...tomorrow I promise!
Good evening to all !

[chris34]

my setup today

my install...soon

well, here is what I thought to load my 3 Strings:

1) an MPPT 100 / 50 A which will receive 1640 W (1440 W max recommended) => for the PARC2 of batteries
2) an MPPT 100 / 30 A which will receive 820 W (max. 880 W recommended) => for the PARC1 of batteries
3) a 100 / 30 A MPPT which will receive 820 W (max. 880 W recommended) => for the PARC1 of batteries

Knowing that the PV Modules are 410 W / ISC = 13,77 A and VOC = 37,45 V

The archi of the 3 PV Fields (positioned on different supports):
1) 4 Modules in series-parallel => 75 V / 28 A
2) 2 Modules in series => 75 V / 13,77 A
3) 2 Modules in series => 75 V / 13,77 A

Hence my question: do you see a wolf in these estimates...?