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Thread: 4160 Isolation Transformer

  1. #21
    Join Date
    Apr 2011
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    Nashville, TN
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    Closure on this Topic

    I thought i'd post what the end results are.

    The drive is up and running perfectly with no issues. New feed of 13.8kv hits the tranformer and a new feed of 4160 from it to the drive and the motor.

    I have included some links to show the input and output waveform of the drive.

    The first image is for full load, the second image is at 50%

    The following lines show;
    1. Voltage input
    2. Current input
    3. Voltage output
    4. Current output

    https://i.imgur.com/DM1b9rE.jpg

    https://i.imgur.com/fL0knr2.jpg

    Results, there is almost no harmonic, just a bit of a 5th harmonic under 50% load.

    Anyway thanks again for everyone's help and i will defiantly use some of you'll advice!

  2. #22
    Join Date
    Jul 2006
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    San Francisco Bay Area, CA, USA
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    Thanks for the follow up, we rarely get that.
    __________________________________________________ ____________________________
    Many people are shocked when they discover I am not a good electrician...

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