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Thread: you're wrong. no you're stupid. well you're stupider so there.

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  1. #1
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    you're wrong. no you're stupid. well you're stupider so there.

    Quote Originally Posted by Ingenieur View Post
    really?

    we know this
    1000 hp
    4000 v
    122 a
    I think it would be 4160V on the nameplate.

    An example:

    Last edited by GoldDigger; 11-12-17 at 05:01 PM. Reason: Speling in title: your --> you're
    Si hoc legere scis nimium eruditionis habes.

  2. #2
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    Quote Originally Posted by Besoeker View Post
    I think it would be 4160V on the nameplate.

    An example:

    the catalog lists them at 4000
    every one I've seen is rated at 4000, and I've seen 100's

  3. #3
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    another
    these are mine fans
    we need more info

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    Quote Originally Posted by Besoeker View Post
    I think it would be 4160V on the nameplate.

    An example:

    Please take heed of what the mod has posted.
    Si hoc legere scis nimium eruditionis habes.

  5. #5
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    Quote Originally Posted by mike_kilroy View Post
    Nonsense. OP already said xfmr ratio is adjustable.
    But we don't know if it was adjusted.
    Si hoc legere scis nimium eruditionis habes.

  6. #6
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    Quote Originally Posted by Ingenieur View Post
    assume at motor
    Perhaps we should wait for factual data rather than make assumptions.
    Si hoc legere scis nimium eruditionis habes.

  7. #7
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    why do technical posts keep getting censored?
    who believes the kva would not increase?
    875 kva xfmr rating
    840 kva load
    4000 vac
    121 a line and 70 a phase
    so Z = 57 ohm
    if dropped to 52 ohm would delivered kva increase or stay at 840?
    even if a 25% increase (120% of rating)?

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    I can see a reality show on the horizon...."Big Brother, Nerd Edition".

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    I'd like to see how a utility would size their transformer to feed that load
    Ethan Brush - East West Electric. NY, WA. MA

    "You can't generalize"

  10. #10
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    Quote Originally Posted by electrofelon View Post
    I'd like to see how a utility would size their transformer to feed that load
    Good if the drive used is 12-pulse. Knowing that a 6-pulse drive will have a very high harmonics content. Remember that a 6-pulse drive with 2-3% line reactor will have to derate the supply transformer by approximately 85%. Loading the transformer more than 85% (which the OP did) gives no margin for extra load capacity.

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