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Design of Grid Tied Systew with Off-Grid Option?

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  • #61
    Originally posted by Mike90250 View Post
    Honda makes a nice one, with auto-start capability.
    http://powerequipment.honda.com/gene...odels/eu6500is
    And almost $1000 more than a Kohler 20KW with transfer switch included.
    NABCEP certified Technical Sales Professional

    [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

    [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

    [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

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    • #62
      Originally posted by Mike90250 View Post
      Honda makes a nice one, with auto-start capability.
      http://powerequipment.honda.com/gene...odels/eu6500is
      That is good. Thank you.
      60 db for 5kW using benzene. Like an AC at 30 meters. $5000 US is alot.

      "Die Ersten werden die Letzten sein"

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      • #63
        Originally posted by Naptown View Post
        And almost $1000 more than a Kohler 20KW with transfer switch included.
        Do you have a link for the quiet Kohler ?
        Powerfab top of pole PV mount (2) | 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

        solar: http://tinyurl.com/LMR-Solar
        gen: http://tinyurl.com/LMR-Lister

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        • #64
          Originally posted by Mike90250 View Post
          Do you have a link for the quiet Kohler ?
          Please yes a link to a 20 kW generator for $4000US at 60 dB

          "Beispiele tun oft mehr als viel Worten"

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          • #65
            http://www.homedepot.com/s/generators+for+home?NCNI-5
            here you go
            NABCEP certified Technical Sales Professional

            [URL="http://www.solarpaneltalk.com/showthread.php?5334-Solar-Off-Grid-Battery-Design"]http://www.solarpaneltalk.com/showth...Battery-Design[/URL]

            [URL]http://www.calculator.net/voltage-drop-calculator.html[/URL] (Voltage drop Calculator among others)

            [URL="http://www.gaisma.com"]www.gaisma.com[/URL]

            Comment


            • #66
              Originally posted by Naptown View Post
              Kohler specs list 66 dB. That is good. Perhaps can hear from 100 meters. Perhaps more with low Hz generator.

              "Wer anderen eine Grube gräbt, fällt selbst hinein"

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              • #67
                Originally posted by WahrHeat View Post
                Kohler specs list 66 dB. That is good. Perhaps can hear from 100 meters. Perhaps more with low Hz generator.
                If nothing else is running within that area. 66 is quiet.
                [SIGPIC][/SIGPIC]

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                • #68
                  Sound like a central air, not too bad. When you needed, you will think it is very quiet.

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                  • #69
                    consider flexpower one system.

                    Originally posted by Shockah View Post
                    Nice... thanks for sharing similar systems out there.
                    $2450 is a bit shy considering the shipping cost of batteries to Hawaii. You also did not tally the switches and incidentals... but we're on the same page...

                    I figured 6 panels because this kit would be needed during hurricane destruction which is normally followed by cloudy weather.

                    This is not for a SHTF scenario, for I don't think the world is going to come to an end that easily or in my lifetime.
                    Super Storm Sandy & Hurricane Haiyan in the Philippines inspired me to think about this (more). For we are a small mass here and would suffer long term if we were to experience either... and like Fukushima Japan, our main power plant (fuel, not nuclear) is right on the ocean front.

                    We had our wake up calls in 1982 & 1992,,, I learned a thing or 2 about survival back then

                    You might consider the Outback Flexpower 1 system. It is fully configured for grid tie bimodal as well as off grid use, includes all the transfer switching capabilities, charge controllers etc. I have one with 12 panels for 3kW, 200 Ah 48V battery pack.
                    OutBack FP1 w/ CS6P-250P http://bit.ly/1Sg5VNH

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                    • #70
                      A couple of things to add to this old thread:

                      1. A big array of shiny rectangles outside glistening in the sun, high above the ground, is not exactly inconspicuous. The neighbors will know all about the fancy stuff you must have inside, to say nothing of the cold beer in your fridge, while they sweat in their houses with the TVs off and the food going bad.

                      2. You now can AC couple grid-tie inverters to an Outback Radian, using their GSLC175-AC-120/240. The Outback inverter should have at least 125% the output of the grid-tie inverter(s). Here's the conclusion of Outback's 2014 application note, "Adding the battery back-up power option to existing grid-tied PV/solar systems":

                      Overall, this AC Coupling solution from OutBack has considerable advantages: it is easy to size, easy to install,
                      does not require external hardware, and is less expensive. It uses intelligent temperature compensated controls
                      and provides back-feed protection if a generator is part of the system. While simpler and more cost-effective than
                      the frequency dithering-dependent "one-size-fits-all" approach of other AC Coupling schemes, the OutBack
                      solution provides safer, more stable and generator-friendly battery backup power for existing grid-tied inverter
                      systems up to 6 kW that won't leave all that PV power stranded on the roof the next time disaster strikes. When
                      implemented using the OutBack Radian-series inverter, the result is higher-performance and greater reliability in
                      a more compact, cost-effective package, enabling the user to invest in higher-quality energy storage and
                      thoroughly optimizing their renewable energy system.

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