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    Standard Low voltage DC bus voltage for solar panel outputs?

    Hello,
    What is the accepted standard commercial & industrial voltage bus level for solar panel outputs?

    Is it 12V or 24V, or something else?

    (That is, considering that that an 220VAC inverter is not used.)

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    Re: Standard Low voltage DC bus voltage for solar panel outputs?

    48V is the standard low voltage for kW sized arrays, but there is nothing stop Utilites from cascading banks of arrays into larger serial, Parallel grids for MW and GW sized farms with suitable protection.
    A best design is easily achieved with good test specs™
    A better question deserves a better answer. ™
    ... so include all your acceptance criteria ( values, % tolerance) and assumptions in your question or any design.

    ... Tony Stewart EE since 1975
    - slightly north of Toronto


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    Re: Standard Low voltage DC bus voltage for solar panel outputs?

    Thanks, i was also thinking about low voltage bus's for use in offices...for their laptops and led lights etc...which might be less than KW's...i think these may be 24v because its below the "startle" level?



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