Current input limit

Started by asdex, April 06, 2020, 12:33:32 AM

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asdex

It sounds like there is no way round getting another controller.
I'll look into how that works.
Thanks,
6 x JA Solar 320w solar panels facing NW, 4 x 300w panels facing North. 2x 24volt 280ah LiFePO4 batteries in parallel, Classic and WBJr, Epever 50A controller, Outback FX2024 inverter and Mate, Victron BMV-712 monitor, Alibaba solar pump.

Vic

#16
Hi asdex,

You might think about finding some 60 Cell PVs,   in the 250,  to 265-ish watt range (probably Monos,  like the existing),   and add one of these to each of the three existing PVs.   This would add power,   but reduce Voc and Vmps a bit.

This can be a bit of a chore to mount the new,   on the existing racking.   Many 60 cell PVs in this power range are about 66 X 39.4 Inches   â€¦   sorry,   know that you are Metric.

The goal would be to find the additional PVs  with Imp close to the existing,   and ones with relatively low  Voc.

This would cause the Classic 150 to enter Hyper Voc,   at a lower temperature,   and reduce string Vmps,   which would reduce CC heating a bit.

But you might not like this bit of "hodge-podge"  visual effect.   AND,  it does not gain you very many degrees of temperature where Hyper Voc begins   â€¦   probably not really worth it   ...

Just a thought from left field.  FWIW,   Vic
Off Grid - Sys 1: 2ea SW+ 5548, Surrette 4KS25 1280 AH, 5.25 KW PV, Classic 150,WB, Beta Barcelona, Beta KID
Sys 2: SW+ 5548s, 4KS25s, 5.88 KW PV, 2 ea. Classic 150, WB, HB CC-needs remote Monitoring/Control, site=remote.
 MN Bkrs/Bxs/Combiners. Thanks MN for Great Products/Svc/Support&This Forum!!

asdex

Hi Vic, thanks for the idea. I'll have a look at that. Not worried about looks. Also thinking about a second classic as it would give us a back in case one fails. I could go back to six panels while waiting for parts.
6 x JA Solar 320w solar panels facing NW, 4 x 300w panels facing North. 2x 24volt 280ah LiFePO4 batteries in parallel, Classic and WBJr, Epever 50A controller, Outback FX2024 inverter and Mate, Victron BMV-712 monitor, Alibaba solar pump.

Vic

asdex,

Backup is good,   and dividing the work twix two Classics will help them last longer,   as you know.

Vic
Off Grid - Sys 1: 2ea SW+ 5548, Surrette 4KS25 1280 AH, 5.25 KW PV, Classic 150,WB, Beta Barcelona, Beta KID
Sys 2: SW+ 5548s, 4KS25s, 5.88 KW PV, 2 ea. Classic 150, WB, HB CC-needs remote Monitoring/Control, site=remote.
 MN Bkrs/Bxs/Combiners. Thanks MN for Great Products/Svc/Support&This Forum!!