Will this combo work? 330watts pv on blue sky controller

ayurtdwellerayurtdweller Registered Users Posts: 26 ✭✭
I am looking for a low cost, high power mppt controller and have come across this. Blue Sky 1524ix
http://www.blueskyenergyinc.com/products/details/solar_boost_1524ix

Output Current Rating20A max (12V battery & 12V PV’s) • 15A max (battery or PV’s > 12V nominal)
Nominal Battery Voltage12 / 24 VDC
PV Input Voltage57VDC max (Recommend max Voc at STC ≤ 45.6VDC

It gives max  input ratings for a few different pv cell configurations. I'd like to use it on a 12v battery using one of these panels: https://www.civicsolar.com/product/canadian-solar-maxpower-cs6u-335m-335w-mono-slvwht-1000v-solar-panel-t4
Module Watts STC: 
335 Watts
Module Watts PTC: 
307.10 Watts
Max Power Voltage (Vmpp): 
37.80 Volts
Max Power Current (Impp): 
8.87 Amps
Open Circuit Voltage (Voc): 
46.10 Volts
Short Circuit Current (Isc): 
9.41 Amps

Is this a dumb idea? 


Comments

  • EstragonEstragon Registered Users Posts: 4,329 ✭✭✭✭✭
    Where are you located? The Voc could be a problem, because on a cold morning before the sun hits the panel to warm it up the voltage could get too high. A slightly smaller ( eg ~250w) panel would likely have a low enough Voc.

    If the panel can never get cold in your location you might be able to get away with it.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
  • ayurtdwellerayurtdweller Registered Users Posts: 26 ✭✭
    edited May 2017 #3
    New Hampshire....cold enough! 
    Temperature Coefficient (Voc) -0.31 % / °C
  • EstragonEstragon Registered Users Posts: 4,329 ✭✭✭✭✭
    Probably doesn't get cold enough there to overvoltage (we see <-40C here), but you might want to consider the smaller panel to be sure. The panel will be a little easier to handle physically as well. The bigger ones are definitely a 2 person job to handle.
    Off-grid.  
    Main daytime system ~4kw panels into 2xMNClassic150 370ah 48v bank 2xOutback 3548 inverter 120v + 240v autotransformer
    Night system ~1kw panels into 1xMNClassic150 700ah 12v bank morningstar 300w inverter
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