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Lightning impulse high voltage test

  1. Dec 17, 2013 #1
    Hello, I am posting this here becase this is not a homework, it;s just something I need to know.
    Please tell me what these two waveforms mean? I know that they're both lightning impulse waveform but what is the difference between those two, what gives them their shapes?
     

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  2. jcsd
  3. Dec 17, 2013 #2

    davenn

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    Science Advisor
    Gold Member

    where did you get these waveform images from?
    have you got some references ?

    cheers
    Dave
     
  4. Dec 17, 2013 #3

    berkeman

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    Staff: Mentor

    The first looks like a standard "Combo Wave" waveform used in Surge testing (which simulates lightning strikes to AC Mains supply lines leading to equipment). The standard test is EN 61000-4-5. I don't recognize the 2nd waveform...
     
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