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Thread: Question for Energex

  1. #1

    Question for Energex

    The chargers use AC wall power, yet, presumably, convert that to DC before use. Is there a way to have direct DC input into your chargers? I for one would very much like the option.

  2. #2
    Hi Howard,

    You can put a battery or batteries through an inverter and then run the chargers.

    You can see all the different chargers at Tesla Chargers | World's Most Efficient, Effective & Advanced Battery Chargers
    Admin
    Energy Science Forum

    IF YOU HAVE ANY QUESTIONS ABOUT USING THIS FORUM, PLEASE READ THIS F.A.Q. FIRST. http://www.energyscienceforum.com/fa...=vb3_board_faq

  3. #3
    According to Gary, the PWR supply is the current limiter. I as well explored using a solar panel. You must build a current limiter of the proper voltage and current.It does work.but by the time you do it all, you could have purchased the solar tracker. They work very good. Worth every dollar.

  4. #4
    Where is the manual for the Golf Cart Charger?

  5. #5
    Member
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    I am designing a solution for rural electrification purposes. How many solar panels can I use the tesla solar tracker III with? can i parallel the charging or do i need one charge controller for every solar panel? I am planning to at least power home lighting via this method(solar panel(s) -->tesla solar tracker -->Lead Alum batteries -->load. Next up would be space cooling (i.e AC)

    any inputs are welcome.

    sincerely,

    //teej_seeker

  6. #6
    Unlike standard MPPT controllers on the market today, the TST3 is wired with all panels in parallel, unless you use 12 volt panels with a 24 volt model TST3. Then you could wire two in series.

    For example the 24 volt 80amp model can take up to 10 Canadian Solar 220watt panels. Since these are 24 volt (nominal) panels and the max amperage is 7.52 amps in full sun, that will give you a max of 10 * 7.52 = 75.2 amps. Any more than 10 panels would be over the rated capacity. You can't squeeze much more than 2.2kw out of the highest capacity TST3 (currently). Now, if you are going to wire each panel to a combiner box, you will need one that is rated at above 80 amps and if you are going to run the DC copper cable from that combiner some distance, you will need some extremely thick (and expensive) cables, because of the "low voltage and high amperage" issue. This is one caveat of the TST3. If possible, it is best place the batteries, inverter and TST3 not too far from each other and run the AC cable from the inverter to where it needs to go. This will save you some money on cabling.

    If you need a solar system that is bigger than 2.2kw, as long as your battery bank is large enough, you could connect two TST3's in parallel to the same bank. While the cost of the two charge controllers will be about twice the cost of a standard MPPT charger, it is money well spent. You will save much more money, over time, on batteries.

    Being a solar installer, I am hoping that at some point EnergenX will create a model for 48 volt battery banks that can handle higher input voltages, so we can end up being able to wire a few panels in series and use a lot less copper and be able to handle 4.4 KW or more of panels. I would also like the design changed so that it can be mounted vertically, like every other charge controller on the market.

    Don't get me wrong, I love the TST3's, but with their current design, they work well for smaller systems only. For larger systems, I would have to buy 3 or 4 TST3's and spend an extra $2,000 on high gauge copper cables. I have only been able to use the TST3's on two jobs, because of the "High amperage, low voltage" issue. At some point, I will do a complete review of the 2.2kw installation I did at my brother's paintball field, using the 24 volt, 80 amp model TST3.




    Quote Originally Posted by teej_seeker View Post
    I am designing a solution for rural electrification purposes. How many solar panels can I use the tesla solar tracker III with? can i parallel the charging or do i need one charge controller for every solar panel? I am planning to at least power home lighting via this method(solar panel(s) -->tesla solar tracker -->Lead Alum batteries -->load. Next up would be space cooling (i.e AC)

    any inputs are welcome.

    sincerely,

    //teej_seeker

  7. #7
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    Hi Daryl,

    Thanks for the post. Do you have a system block diagram that aptly describes what you have written above?

    sincerely,

    //teej_seeker

  8. #8
    Sorry, I don't.

    Daryl

    Quote Originally Posted by teej_seeker View Post
    Hi Daryl,

    Thanks for the post. Do you have a system block diagram that aptly describes what you have written above?

    sincerely,

    //teej_seeker

  9. #9
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    Quote Originally Posted by Daryl Hansen View Post
    Sorry, I don't.

    Daryl
    Hi Daryl,

    can the TST3 be used in combination with the SG Oscillator and can I switch between the primary bank and the charging banks via a switch?

    sincerely,

    teej_seeker

  10. #10
    Senior Member John_Koorn's Avatar
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    Quote Originally Posted by teej_seeker View Post
    Hi Daryl,

    can the TST3 be used in combination with the SG Oscillator and can I switch between the primary bank and the charging banks via a switch?

    sincerely,

    teej_seeker
    teej, I would not do that as there is a chance that the high voltage spikes may damage the internal components and that would not be covered under the warranty.

    If it was me I would build my own cap pulser circuit to do what you want to do because if you blow something you don't have to replace the whole unit. Plus it's fun to learn how they work.

    John K.

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