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Harmonics

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  • Nov. 8, 2011
    article
    Electrical Construction and Maintenance

    When Circuit Boards are Toast, Part 14

    Previously, you found your transformer had excess harmonics on the load side. The next step is to look at the primary side. The easiest place is probably at the panel supplying this transformer. That may be your service panel or a distribution panel ......More
  • Oct. 25, 2011
    article
    Electrical Construction and Maintenance

    When Circuit Boards are Toast, Part 13

    Previously, you found your transformer was overloaded. You moved enough loads to correct that, but you still have problems with circuit board failures. Will this nightmare ever end? Yes, but not before you know what's going on with harmonics in your ......More
  • May 24, 2011
    article
    Electrical Construction and Maintenance

    The 4-1-1 on Variable-Frequency Drives 1

    Basic design and operation principles behind variable-frequency drives (VFDs)...More
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