Volts system differences

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System
System Posts: 2,511 admin
in Solar Beginners Corner #1
I was looking at the Conenergy Solar Force Piston Pumps. I would need one operating straight from PV solar panels. I noted they had the pumps in 12V for $1787.00, 24V for $1806.00, and 48V for $1696.00.

How do I decide which voltage of sytem I want? My panels will have to be 150 - 160 feet from my pump. Would I want a higher voltage system because of the length between the two? What are the factors I should be looking at to decide what voltage of a system I need?

It also surprised me that the 48 volt pump was the cheapest. I am sure there is a reason for it.

Thanks in advance for any input....
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  • icarus
    icarus Solar Expert Posts: 5,436 ✭✭✭✭
    #2
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    Re: Volts system differences

    Double the volts, halve the amps. At the distance that you mention, I would go with the highest voltage possible. Reduces the wire size, line loss.

    Tony
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  • mike95490
    mike95490 Solar Expert Posts: 9,583 ✭✭✭✭✭
    #3
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    Re: Volts system differences

    > It also surprised me that the 48 volt pump was the cheapest. I am sure there is a reason for it.

    Less copper involved at higher voltage ??
    Powerfab top of pole PV mount | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

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