New system...neat





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  1. #1
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    Default New system...neat

    My friend's old system got replaced.
    One of the two volt cells was acting up, after 12 yrs

    Old system:
    24V system
    3kW Outback inverter
    2 Outback MPPT's
    16 x 175W panels
    12 x 2V Willard lead Acid batteries configured to 24V

    New System:
    16 x 175W panels
    Victron Easisolar 5kVA
    12kW Blue Nova Lithium batteries

    I am jealous. Pretty neat system

    I got the old batteries and one of the Outback MPPT's
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    Last edited by Prof; 2020/02/18 at 07:21 AM. Reason: Changed panels amount
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  2. #2
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    Default Re: New system...neat

    Quote Originally Posted by Prof View Post
    New System:
    12 x 175W panels
    Victron Easisolar 5kVA
    12kW Blue Nova Lithium batteries

    I am jealous. Pretty neat system
    Beautiful!

    But 2.1kw panels ... for a 5kva system and 12kWH bank ... is that enough?
    Probably he is going to add more panels ...

    I had 2.1kw on a 3kva Victron grid tied with 10kWH bank ... and the panels where just just not enough ... worked, but with 3.5kw panels now I'm getting much better results.
    Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

  3. #3
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    Default Re: New system...neat

    Quote Originally Posted by the_terrible_triplett View Post
    But 2.1kw panels ... for a 5kva system and 12kWH bank ... is that enough?
    May be there is limitations with respect to space for more panels?

    On would think after 12years of using a system it is fit for purpose as we all have different requirements.

  4. #4
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    Default Re: New system...neat

    Quote Originally Posted by ekkekan View Post
    May be there is limitations with respect to space for more panels?

    On would think after 12years of using a system it is fit for purpose as we all have different requirements.
    Also very true yes.

    Or, the original poster never knew about that.

    And on forums it is a good idea to point out that what we can because someone else reads it and picks up the tibits we all leave behind.



    For example:
    Poster has a 5kva inverter right, 10 to 1 connected to his DB = grid tied most probably - because the Easysolar has all that functionality built into one unit.
    SANS has a 3.5kw limit on a 60amp DB main breaker for grid tied. (Note: The Easysolar is not on the NRS list though.)

    So how do you get i.e. in my case, a 5kva inverter, 7kw panels and 20kWH bank approved in line of SANS and NRS regulations?
    By limiting the inverter software to 3.5kw when grid tied and grid is up when you sign it off.

    If you have good equipment, when there is a power failure, it ignores the 3.5kw limit and uses the full 5kva to power loads.

    Then you want 10kva - 2 x 5kva's in parallel - can still be seen as legal because both are still limited to 3.5kw when grid tied.
    Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

  5. #5
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    Default Re: New system...neat

    Quote Originally Posted by the_terrible_triplett View Post
    Beautiful!

    But 2.1kw panels ... for a 5kva system and 12kWH bank ... is that enough?
    Probably he is going to add more panels ...

    I had 2.1kw on a 3kva Victron grid tied with 10kWH bank ... and the panels where just just not enough ... worked, but with 3.5kw panels now I'm getting much better results.
    I had a recheck on panels.

    16 x 175W = 2.8kW

    No more space on garage roof unless on frame next to house. Thatched roof.

    Edit: also totally off grid, no Eskom available
    Last edited by Prof; 2020/02/18 at 07:24 AM.
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  6. #6
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    Default Re: New system...neat

    Quote Originally Posted by Prof View Post
    I had a recheck on panels.

    16 x 175W = 2.8kW

    No more space on garage roof unless on frame next to house. Thatched roof.

    Edit: also totally off grid, no Eskom available
    Much better than 2.1kw.

    Ground mounted array ... NICE ... IF you need more power.
    Can even make it follow the sun (DIY style) using a separate MPPT.
    If I have the space in the garden I would have done that! Only space is the roof for me.
    Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

  7. #7
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    Default Re: New system...neat

    Beautiful system with Easysolar indeed.

    I would have done the same but supplier limitations on Easysolar decided otherwise.
    I now have individual elements with MPPT (mc4) and Multi Grid Inverter Charger on 48V.

    Venus GX replaces the local display as I don't have use for it but control it via WiFi and smartphone from remote.

    But installation wise Easysolar would be the way to go if you are not bound to comply to regulations in grid tied systems.
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  8. #8
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    Default Re: New system...neat

    Quote Originally Posted by Kalahari Safari View Post
    But installation wise Easysolar would be the way to go if you are not bound to comply to regulations in grid tied systems.
    I agree.

    But there are a few titbits for thought:
    1) The price difference between a Easysolar and identical parts separate ... is supposed to be Zero. They cost the same.
    2) The VenusGX is more powerful than the CCGX, and it has more ports.
    3) If one part of the Esasysolar needs fixing, the whole unit goes in. With separate parts only the faulty part goes in.
    • Like the MPPT blows, your inverter still works as a UPS and it can charge the batteries.
    • Or the inverter needs to go in, the MPPT can still charge the batteries, use a 48v UPS to tie you over.
    • Or the VenusGX pops, the MPPT and inverter can still function, just not grid tied.


    But in the end, it is personal preference ... and NRS certified inverters.
    Political Correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end.

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