30V Pump and 48v panel

CHEVYGUY
CHEVYGUY Registered Users Posts: 6 ✭
in Solar Beginners Corner #1
I have a sun pump sds-q-128 voltage is 12-30v. If I have a panel that puts out 45v could I just buy a regulator? Thanks
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,637 admin
    #2
    Re: 30V Pump and 48v panel

    Not anything that I am aware of for non-battery based system.

    If you are using a battery, you can use one of the quite a few MPPT type Solar Charge Controllers that can take higher voltage solar panels and down convert them to 12/24 volts very efficiently. Depending on how many watts of solar panels/battery bank voltage, an MPPT type Solar Charge Controller will cost around $250-$600 + batteries/fuses/etc.

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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  • Windsun
    Windsun Solar Expert Posts: 1,164 ✭✭
    #3
    Re: 30V Pump and 48v panel

    Depends, is that 45 volts the open circuit voltage? If so, then this might work http://store.solar-electric.com/pca-30-m1d.html

    However, if the Voc is listed at anything higher, you will probably blow out the controller as it has a max input voltage of 45VDC.
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