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  1. Replies
    4$$
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    66

    I have seen harmonics from non-linear loads cause...

    I have seen harmonics from non-linear loads cause that.
  2. Replies
    4$$
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    214

    I got that, thank you. I'm pondering on what to...

    I got that, thank you. I'm pondering on what to do with it. Watch this spave.
  3. Replies
    17$$
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    625

    They slow down di/dt. For spikes, the concern is...

    They slow down di/dt. For spikes, the concern is dv.
  4. Replies
    5$$
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    196

    I think we need some feedback from OP, Farad.

    I think we need some feedback from OP, Farad.
  5. Replies
    5$$
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    196

    Or just buy a new motor rated for the voltage and...

    Or just buy a new motor rated for the voltage and frequency you want it to run at?
  6. Replies
    4$$
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    214

    I have a reasonably recent Photoshop Elements....

    I have a reasonably recent Photoshop Elements.
    Send it on. PM is OK. No promises and no charge.
  7. Replies
    9$$
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    744

    That would be my take based on the information...

    That would be my take based on the information provided.
  8. Replies
    8$$
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    272

    We built some VSDs for a naval application. They...

    We built some VSDs for a naval application. They were outdoor mounted right on the dockside. They had to be weatherproof but we still had to dissipate the heat. We mounted the power semiconductors...
  9. Replies
    8$$
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    272

    Interesting approach..............

    Interesting approach..............
  10. Replies
    17$$
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    625

    Line reactors would reduce the di/dt. I...

    Line reactors would reduce the di/dt. I personally would not use them for spike suppression. Make that have never used them for that purpose.
  11. Replies
    17$$
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    625

    The TVSS solution would be cheaper.

    The TVSS solution would be cheaper.
  12. Replies
    8$$
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    272

    You can calculate it based on the surface areas...

    You can calculate it based on the surface areas available for cooling. For example, if your enclosure is wall mounted, the back panel can't be included. Most panels are painted mild steel and...
  13. Replies
    30$$
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    1,236

    If the voltage was above nominal by less than...

    If the voltage was above nominal by less than half a percent.
    That work for you?
  14. Replies
    30$$
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    1,236

    For a 3-phase, full wave rectifier Vdc = 1.35Vac....

    For a 3-phase, full wave rectifier Vdc = 1.35Vac.
    Others here have shown the mathematical derivation.
  15. Replies
    30$$
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    1,236

    I have dealt with a lot of rectifiers, mostly at...

    I have dealt with a lot of rectifiers, mostly at high/relative high currents. Up to 70kA but more usually in the 20-40kA range.

    Typically, these were 12 or 24-pulse arrangements made up of two or...
  16. Replies
    29$$
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    1,539

    Appreciated, sir!

    Appreciated, sir!
  17. Replies
    30$$
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    1,236

    It is. With a lot of smoothing you might get get...

    It is. With a lot of smoothing you might get get closer to 1.42Vac
  18. Replies
    29$$
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    1,539

    6,000A?????

    6,000A?????
  19. Replies
    16$$
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    826

    Apart from special applications I've only come...

    Apart from special applications I've only come across taps on the HV side, usually 11kV in our case.
  20. Replies
    51$$
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    2,789

    Ignorant Scottie strikes again.............. Why...

    Ignorant Scottie strikes again..............
    Why would the mounting position make a difference to the impedance?
  21. Replies
    22$$
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    768

    If it really is ANY number then the number of...

    If it really is ANY number then the number of connections would be indeterminate.
  22. Replies
    17$$
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    831

    I wasn't quite in a fit state to see. By that...

    I wasn't quite in a fit state to see. By that tine I had lost several pints of blood - I'm told.
    Back to the electrical topic......
  23. Replies
    17$$
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    831

    Shoulda told that to the nurse who attended to...

    Shoulda told that to the nurse who attended to the severe gash on my scalp a week or so ago. Several to the inch was her style. I can't see them but they feel like lesss than 3mm apart.

    Sorry...
  24. Replies
    28$$
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    1,485

    Smurfs has a different meaning here - at least I...

    Smurfs has a different meaning here - at least I hope it is different...
    ...
  25. Replies
    12$$
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    469

    GD has it right. We tend to use it loosely for...

    GD has it right. We tend to use it loosely for equipment not precisely specified.
    You might use it to describe a system comprising unit transformer, switchgear, protection, variable speed drive,...
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