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Panel Current/Wattage - a real test

Discussion in 'Incorporating video or projection in your display' started by lithgowlights, Sep 19, 2019.

  1. lithgowlights

    lithgowlights Senior Elf

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    OK today I got keen and did a test on my 5*5 P10 indoor and outdoor panels to measure the real current per p10.

    Test equipment: Calibrated wattmeter that is accurate to within a watt or two at about 8 different test points (according my fluke meter). The wattage shown below does not include the idle PSU wattage.

    Setup 1:
    5*5 indoor P10 panels, 1/8 scan, a single 350W PSU in the back (Idle wattage 9.6W), and the BBB and fans in the case are run from an external supply so are not in the overall measurements.
    10% White overall wattage: 10.1W, 2.02A, 0.08A per panel
    20% White overall wattage: 23.80W, 4.76A, 0.19A per panel
    30% White overall wattage: 40.4W, 8.08A, 0.32A per panel
    40% White overall wattage: 65W, 13A, 0.52A per panel
    50% White overall wattage: 97.8W, 19.56A, 0.78A per panel
    60% White overall wattage: 136.1W, 27.22A, 1.09A per panel
    70% White overall wattage: 153.6W, 30.72A, 1.23A per panel
    80% White overall wattage: 170.9W, 34.18A, 1.37A per panel
    90% White overall wattage: 181.6W, 36.32A, 1.45A per panel
    100% White overall wattage: 193.4W, 38.68A, 1.55A per panel


    Setup 2:
    5*5 outdoor P10 panels, 1/4 scan, a pair of 300W PSU in the back, one running 12 panels, the other 13 panels (Idle wattage 26.5W), and the BBB and fans in the case are run from an external supply so are not in the overall measurements.
    10% White overall wattage: 21.4W, 4.28A, 0.17A per panel
    20% White overall wattage: 46.1W, 9.22A, 0.37A per panel
    30% White overall wattage: 79.1W, 15.82A, 0.63A per panel
    40% White overall wattage: 124W, 24.8A, 0.99A per panel
    50% White overall wattage: 186.5W, 37.3A, 1.49A per panel
    60% White overall wattage: 264.7W, 52.92A, 2.12A per panel
    70% White overall wattage: 339.5W, 67.9A, 2.72A per panel
    80% White overall wattage: 376.5W, 75.3A, 3.01A per panel

    It was at this point I was not game to go higher with white, so the following are calculated based on Red+Green+Blue currents *.95 as the other average white currents equalled about 95% of the sum of Red + Green + Blue

    90% White overall wattage: 410W, 82A, 3.28A per panel
    100% White overall wattage: 425.5W, 85.1A, 3.4A per panel
     
    Ɠαяєтн and Derf like this.
  2. AAH

    AAH I love blinky lights :) Community Project Designer

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    Do you know if the panels were running at maximum brightness within FPP and were they both at the same brightness. In theory the panels should be fairly close to a 2:1 power ratio (as they are) as 1 is 1/8th scan and 1 is 1/4 scan which is an indication of how much of the panel is actually controlled at a time.
     

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