jim furlong
New Member
- Joined
- Jun 19, 2020
- Messages
- 61
i'm a little concerned about the voltage on my panels.my panels are 420W.My LV5048 uses the PV without going through the battery as I am sure the LV6548 does in fact there are displays showing the amps battery charging and the load watts or KWhr . Remember if you plan on doing 240v split phase you will need an even number of LV6548 s or use as 2 different panels with 3 units 0ne for a 120 panel and 2 for a 240 split panel but you would also need 2 sets of batteries maybe. You definitely need at least 3 units for 22kw of panels and maybe more depending on their voltage and wattage of individual panels since current limited to 18 amps and voltage limited to 250v. If you have say 300 watt panels with VOC of 9.1 then you can't parallel and would only be able to connect about 6 to each MPPT circuit The 18 amps may be very limiting for many potential users. 450v with 18 amps would be much more useful. You might be able to put 2 strings in parallel to each MPPT though. You would also need 2 Solark 12 s if you went that route for 22kw of panels. Remember also the LV 6548 like many other units are not Batteryless when used in parallel.
Voc 48.84
Vmpp 41.08
Isc 10.74
Isc 10.74
I was under the impression that the current would be fine with a 2P config of the panels as the lv6548 is only gonna take the max current it can pull, the 18A.
Im thinking for 2 LV6548 i would have a 5S2P per PV input with 3 panels facing south,1 panel east and one panel West per string. (totaling 20 panels at 8400W) thinking the east and west panels will keep the Voltage within spec....or is this cutting it too close
with the east/west config the voltage will be more closer to a 4s2p configuration than a 5s2p withe the benefits of capturing the early mornign/late evening sun
i would figure something else after with the remaining 14 panels i have
I got a spectacular deal on the panels that i couldn't pass up... i originally only wanted 16kw for the sol ark but now i have all this extra potential power i could use
i have 10kwh of batteries and 22kw of panels i just need to fill in the gaps to make it all work
I dont have a need for 3 phase... single phase with 3 units is the max i would need. I would still get 240V single phase
i would like to be able to charge my 2 EV's, Heat water tanks when ever the sun is shining in the winter. the other 3 seasons will be a breeze
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