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Thread: Harmonics interpretation electric board

  1. #1
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    Harmonics interpretation electric board

    Hi, I saw some harmonics in a electric board so I would like to know what do you think.

    It my first time seeing this value 30% THD is a lot for me, but I have no enough experience to know if this is usual.

    Theory is different than experience.

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  2. #2
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    What is the load as a percentage of the meter full scale? At load relative load, high THD is not a big deal.

    For example, if it was a 2000A meter and the load was 20A, a 30% THD is no big deal.

    If the load is relatively high, what is the load type and what harmonic makes up the biggest offender? lots of triplen harmonic?
    Ron

  3. #3
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    Quote Originally Posted by KundaliniZero View Post
    Hi, I saw some harmonics in a electric board so I would like to know what do you think.

    It my first time seeing this value 30% THD is a lot for me, but I have no enough experience to know if this is usual.
    Assuming the loads are single phase to neutral, 30% wouldn't altogether surprise me. Can you check the neutral?
    Si hoc legere scis nimium eruditionis habes.

  4. #4
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    Check THD for voltage also. What is it?

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