voltage ?

[wez]

hi can someone please help me , i got a microcare mppt running a 24v dc battery bank 315a/h
now should i connect my panel in series to get a higher voltage to feed  the mppt they are solaire 150w 12volt pv 's got 12, cause on the controller the panel voltage is low acording to the mppt.
what should i do to get the best results from my setup, how should i connect my panels?

some info on system:
2kw microcare inverter
6-105a/h deep cycle bats connected 24v
60A microcare mppt
12- 150w solaire pvs 17vmp, 22voc , 8A

help would be appreciated
wez

[MJLorton]

Hello Wez,

Normally the benefit of the MPPT charge controller is to sting panels together in series to get a higher voltage. This means there are less loses over longer wire runs and the wiring can also be a smaller gauge as the current is less.

What you need to do is check what the maximum input voltage the 60A Microcare MPPT is rated for. Then allow some safety margin and create strings of panels in series that fall within that safe input voltage.

If you are limited to say 75 volts input then you could have 3 sets of 4 panels in series (4x17v=68volts). Those 3 sets are then connected in parallel. That would provide roughly 68 volts at 24 Amp max.

Hope that helps.

Cheers,
Martin.

[wez]

thanks i'll do that .