MPPT 60-150 Max PV Input

Pezquera
Pezquera Registered Users Posts: 12 ✭✭
in General Solar Power Topics #1
I am in the process of replacing my PV modules that are 20 years old. My actual system consist of (3) XW6048 inverters in parallel, (4) MPPT 60-150 and 60 solar cells rated at 220 watts each. , Each MPPT has one combiner with (5) circuits of three cells each. I want to increase the capacity of the solar cells so that I have more power available during low production. My question is what is the maximum power input a MPPT unit will handle without damaging the unit?
The installation instructions say that, and I quote "the PV array size can be as high as 6720 W", is this OK?
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  • SumPower
    SumPower Registered Users Posts: 85 ✭✭
    #2

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  • Pezquera
    Pezquera Registered Users Posts: 12 ✭✭
    #3
    Thanks!!
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  • SumPower
    SumPower Registered Users Posts: 85 ✭✭
    edited January 28 #4
    I would use the info from this data sheet. Versus the oversizing wattage above as the data sheet does not mention anything about oversizing the array to the 7200w.
    Max 5250 PV Array.

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  • Dave Angelini
    Dave Angelini Solar Expert Posts: 6,944 ✭✭✭✭✭✭
    #5
    If you live in a hot climate oversizing needs to be well thought out, or just buy another mppt and be conservative! The extra power when clipping is being dissipated as extra heat.
     I have seen the mppt 60 so hot you could not touch it for long. You are fused on the 5 string arrays right?
    "we go where power lines don't" Sierra Nevada mountain area
       htps://offgridsolar1.com/
    E-mail offgridsolar@sti.net

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  • t00ls
    t00ls Solar Expert Posts: 261 ✭✭✭
    #6
    this is what my system is making at 7:47 this morning

    I have my charging percent set at 50% because I ruined batteries before from them boiling too much

    I have a long story about the batteries I am using right now ...I will make a thread about all of it...long story short....the batteries after a week now seem to do ok

    also have 2 stage no float set on the inverter at 30% which sets them up to go from bulk to absorb real quick from the CC in the morning

    yes @Dave Angelini , I am still using the old config tool from apox controls you recommended years ago.....windows 11 didnt like that old USB driver but I finally got it working
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  • t00ls
    t00ls Solar Expert Posts: 261 ✭✭✭
    #7
    forgot to say...dont go over 140volts on the strings to 1 60/150 charge controller

    might would be wiser to buy either the 80/600 or the 100/600 charge controllers from Schneider, I know they are more expensive, but you would have less strings and more early morning voltage meaning more wattage through the day
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