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  1. Replies
    21$$
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    364

    That's fine. But usually one would design for...

    That's fine. But usually one would design for operation within the supply tolerance limits. What if your nominal 208V was just at the lower permissible limit?
  2. Replies
    15$$
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    229

    If only I could have got that rate on my recent...

    If only I could have got that rate on my recent trip to the Eurozone...........:p
  3. Replies
    21$$
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    364

    YW! Some of us here routinely deal with...

    YW!

    Some of us here routinely deal with variable speed drives so there is quite a pool of knowledge to tap into.
  4. Replies
    21$$
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    364

    Plus whatever tolerance limits apply to the 208V...

    Plus whatever tolerance limits apply to the 208V supply.
  5. Replies
    21$$
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    364

    I just knew some pedant would come up with...

    I just knew some pedant would come up with that.............:p
  6. Replies
    21$$
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    364

    I don't know whether to wish you well or badly in...

    I don't know whether to wish you well or badly in your endeavours............
  7. I agree. A continuous drain of the heated water...

    I agree.
    A continuous drain of the heated water is one possible explanation.
    A plumbing rather than an electrical problem.
  8. Thread: Smith

    by Besoeker
    Replies
    10$$
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    260

    Would you need to take account of the starting...

    Would you need to take account of the starting current of the fans in question?
  9. Replies
    21$$
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    390

    Yes, but the voltages should have been a...

    Yes, but the voltages should have been a clue...........and it's a pretty basic stuff.
    As my late great friend Tommy was fond of saying:
    "The man who never made a mistake never made anything."
  10. Replies
    15$$
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    229

    I got it from the RS website. Filter for: Fixed...

    I got it from the RS website.
    Filter for:
    Fixed resistor, through hole, value, temp coefficient, tolerance
    And you are left with applicable results.
    Part number for us is 237-3139

    And that's...
  11. Replies
    21$$
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    390

    Aplogies. I took it to be single phase. Mea...

    Aplogies.
    I took it to be single phase.
    Mea Culpa.....
  12. Replies
    21$$
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    364

    You can't get 230V out with 208V in.

    You can't get 230V out with 208V in.
  13. Replies
    15$$
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    229

    This do? Specifications Diameter 6.35mm...

    This do?

    Specifications
    Diameter 6.35mm
    Dimensions 6.35 Dia. x 12.7mm
    Length 12.7mm
    Maximum Operating Temperature +145°C
    Maximum Temperature Coefficient +3ppm/°C
    Minimum Operating...
  14. Replies
    21$$
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    364

    Maybe he won't need it if he is using a VFD.

    Maybe he won't need it if he is using a VFD.
  15. Replies
    6$$
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    141

    It's a point I pondered too. If you want to make...

    It's a point I pondered too.
    If you want to make a measurement, connect the instrument with the drive dead then power it up.
  16. Replies
    21$$
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    390

    If the transformer is 480V and 112.5kVA, why the...

    If the transformer is 480V and 112.5kVA, why the limit of 135A?
  17. Replies
    6$$
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    141

    If the supply voltage is 600Vac its peak is about...

    If the supply voltage is 600Vac its peak is about 850V. That's where yout DC link voltage comes from. It is no higher than the peak of your AC supply.
    Personally, I wouldn't want to work on either...
  18. Replies
    10$$
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    368

    240V phase to neutral possibly if it is a...

    240V phase to neutral possibly if it is a centre-tapped supply?
  19. Replies
    21$$
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    510

    The heat generated still has to get out of the...

    The heat generated still has to get out of the conduit via its surface.
  20. Thread: HARMONICS?

    by Besoeker
    Replies
    3$$
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    155

    Good, practical common sense, Mr CB. Don't...

    Good, practical common sense, Mr CB.
    Don't invent esoteric theories until you have positively ruled out the mundane.
  21. Replies
    15$$
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    486

    At 480V, I agree. The current would be about...

    At 480V, I agree.
    The current would be about 270A at 225 kVA.
  22. Thread: SCCR QUESTION

    by Besoeker
    Replies
    11$$
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    270

    Do you know what the transformer rating is in kVA?

    Do you know what the transformer rating is in kVA?
  23. Replies
    11$$
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    400

    Or this: http://kropla.com/electric2.htm

    Or this:

    http://kropla.com/electric2.htm
  24. Replies
    29$$
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    849

    I wish! A contract comes out to tender. We...

    I wish!

    A contract comes out to tender. We tender a fixed price. If we win the contract the only time we can charge extra is if the customer changes something and then a price adjustment is made. ...
  25. Replies
    29$$
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    849

    Thanks to both yourself and StarCat. It's a...

    Thanks to both yourself and StarCat.
    It's a couple of small VSDs for a petrochem application and fairly typical of what we do.
    Quite often the specifications require it - things like wire numbers,...
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