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  1. Replies
    24$$
    Views
    516

    He seems to have done a runner......

    He seems to have done a runner......
  2. Replies
    24$$
    Views
    516

    It gives context to the readings.

    It gives context to the readings.
  3. Replies
    24$$
    Views
    516

    But can you at least see why the rating is a...

    But can you at least see why the rating is a significant factor?
    Yes, it does sound like the motor is shot but it could also be loose connections giving high resistance readings.
    And it will...
  4. Replies
    6$$
    Views
    154

    I suppose that could be the supply to drive the...

    I suppose that could be the supply to drive the coil rather than supply sensing for phase loss. Or, as you say, it could be a timer.
    More information needed.......
  5. Replies
    24$$
    Views
    516

    Perhaps moelect can fill in some details.

    Perhaps moelect can fill in some details.
  6. Replies
    24$$
    Views
    516

    That was my thought.

    That was my thought.
  7. Replies
    24$$
    Views
    516

    Curiosity killed the cat...........:) Ever so...

    Curiosity killed the cat...........:)
    Ever so slightly more seriously, the rating will give an indication of what the winding resistance should be.
    The 333 ohms seems rather high and maybe the 4...
  8. Replies
    24$$
    Views
    516

    What rating is the motor?

    What rating is the motor?
  9. Replies
    22$$
    Views
    841

    Dirt/swarf between the pole faces maybe......

    Dirt/swarf between the pole faces maybe......
  10. Thread: VFD question

    by Besoeker
    Replies
    21$$
    Views
    949

    It's what I would do. But what do I...

    It's what I would do.
    But what do I know............
  11. Then it would be unusual.

    Then it would be unusual.
  12. Which is usually insignificant. I suggest you...

    Which is usually insignificant.
    I suggest you measure on one of your installations.
    I may give yor post the merit it deserves after I have walked the first couple of miles with our black and white...
  13. I feel sure that your immense and vast practical...

    I feel sure that your immense and vast practical experience in this field is invaluable and plumbs the great depth of the topic.
  14. It wasn't a p1ssing match. Just an attempt to...

    It wasn't a p1ssing match. Just an attempt to clarify harmonic issues that some seem to wish to conflate with the fundamental.
  15. OK. Post #43 for input current. Output current...

    OK.
    Post #43 for input current.
    Output current is a close approximation to a sine wave.
    BS7671 gives volt drop in mV/A/m.

    What more do you want/need?
  16. Clearly, VFDs are not your forte. When you are...

    Clearly, VFDs are not your forte.
    When you are in a hole........
  17. You want me to present detailed contract...

    You want me to present detailed contract information on a public forum?
    I've already given you sufficient information, perhaps more than I strictly should have about a customer and an installation....
  18. Measured after installation. How else??

    Measured after installation. How else??
  19. The ordinary engineer who claims that the input...

    The ordinary engineer who claims that the input current to the VSD is more sinusoidal than the output?

    Typical input current:
    ...
  20. Och, no problem. kW Volts pf effy Current...

    Och, no problem.

    kW Volts pf effy Current
    110 415 0.880 94.0% 185 A

    Distance 200 m
    Pick 150 mm^2

    VD
    per BS7671 3.03%
  21. They are in accordance with BS7671. I already...

    They are in accordance with BS7671.
    I already indicated so in an earlier post.
  22. Thank you for that. Shameful that you got silly...

    Thank you for that.
    Shameful that you got silly for doing so.
  23. Very few VFDs are active fron end. Do get a grip...

    Very few VFDs are active fron end. Do get a grip on reality.
  24. Pay heed to what iWire posted.

    Pay heed to what iWire posted.
  25. Not a bad article but not a lot about voltage...

    Not a bad article but not a lot about voltage drop calculations which what the OP wanted.
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