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  • Users: JTProE
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  1. JTProE

    Mitsubishi FR-E520

    Does anyone have the parameter list in .xls format? If not, any ideas how to find them (without typing them in by hand)? Thanks.
  2. JTProE

    VFD Feeder Size

    NEC 2005: Article 430.122(A) states that the feeders of a VFD are required to be sized at 125% of the rated input of the drive. If I don't plan on using the full rating, is there a way around this rule? Why can't I just fuse the input conductors to a smaller size (assuming the conductors can...
  3. JTProE

    Grounding Requirements

    Does a 240V delta load from a transformer 480/240 3W transformer need to be grounded? I am looking for code references if possible (I can find wye references, but not for delta secondaries). Thanks.
  4. JTProE

    DC Motor Voltage Effects

    What are the effects of decreasing the terminal voltage on a DC motor (with brushes). I cannot find the manufacturer's data sheet on this specific motor. Is there a certain voltage the motor will no longer work at (assuming it is higher than the back EMF)? Can I say that for every volt it is...

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