Flying as of 6/30/2010

Discussion in 'Post Your Photos' started by TomT, Jul 6, 2010.

  1. TomT

    TomT WindyNation Engineer

    They are just bypass diodes.
    They are supposed to help during partial shading.
    Mine do not have that problem.
    If you check back my panels put out 600 watts in full sun.
    Now they only hit 200-225 watts in full sun. I was looking at the fronts of the panels and now have a discoloration. On some of the cells.
    Also I still have them in series parallel.
    So cells are damaged.
    When I have time I will check each panel in full sun.
    Post results when I can.
     
  2. Tuicemen

    Tuicemen Solar Guru

    You might try WD40 to remove the cloudy discoloring on the panels. I've not tried this trick on my solar garden lights but it is supose to remove the cloudy film on plastics cause from the sun.
     
  3. TomT

    TomT WindyNation Engineer

    I just tested my panels.
    I have 1 dead panel 0 volts.
    Also all the rest in full sun are less than 60 watts a piece.
    At 15 VOC.
    So they are toast and will have to be replaced in the spring.:(
    (UPDATE 12/23/2019) 2 DEAD Panels So with (4) 100 watt panels max watts is 257.
    This is on a really clear day.
    Today is partly cloudy like most.
    Max watts today is 170 watts.
    While the roof panels at 500 watts are at 380 watts output today.
     
    Last edited: Mar 11, 2020
  4. TomT

    TomT WindyNation Engineer

    Just added this switch to my solar panels for the front of the house.
    Hope it helps next time.
    KnifeSwitch.png
     
    Tuicemen likes this.
  5. Tuicemen

    Tuicemen Solar Guru

    So you didn't have them protected Prior?
    You can never have too much protection on your Off grid stuff!
    Ok maybe you can have too much but not having any is asking for trouble.
    I have two lightning arrestors on my solar Dc side and one on the Ac side as well as breaker protection for each array and my inverter. I also have a lightening arrestor on my wind turbine even though it isn't connected directly to my system any more.
     
    TomT likes this.
  6. TomT

    TomT WindyNation Engineer

    What I do when there will be lightning is disconnect my inverter from the house wiring.
    So my whole setup is isolated.
    I am not totally sure how much lightning played in my system going down.
    It was the panels on the front of the house.
    They were hooked to just one controller that arced and quit. All bypass diodes were shorted on the panels.
    And I have 0 Volts on (2) panels.
    It went from 400+ to 4 watts.
    The other 2 controllers and my classic had no problems.
    So adding the switch will isolate and stop any current flow.
    Hopefully that will fix it.
     

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