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Type: Posts; User: SAF

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  1. Replies
    31
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    1,202

    For your further information, on the next go...

    For your further information, on the next go round.

    A capacity chart for 3M wire nuts, they are UL listed for up two #6 AWG in the large blue size, so two #10's and a #8 is no problem.

    3M...
  2. Replies
    3
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    310

    GE Drive Isolation Multitap Xformer

    Your Model was a special made around 2005. It does have two Wye output windings as indicated on the tag.
    X's are 460/266V @ 20KVA capacity, Y's are 230/133V @ 7.5KVA

    267528

    A similar but not...
  3. A competent motor winder could have a look at the...

    A competent motor winder could have a look at the connections on the stator winding under the endbell, and tell you how many poles and what voltage the connections are spliced for.

    They can be cut...
  4. Replies
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    1,732

    You might consider a Industrial Curtain with a...

    You might consider a Industrial Curtain with a weighted bottom, trolley rail on top, and a small crane slot for the crane cables near the center.

    The whole curtain wall could be opened as...
  5. Use a Blair Bit With a custom made pilot to fit...

    Use a Blair Bit With a custom made pilot to fit your existing hole, or a external hole guide clamped to your work.

    They make razor clean holes with minimal effort and last for years when used and...
  6. If you removed the Buck transformers you would...

    If you removed the Buck transformers you would get 16 more volts to the CNC, than you have now.
    You stated that you get 8 volts of drop when your compressors starts. With 16 more volts from the Buck...
  7. Staying above the lower voltage limit, during the voltage drop.

    My solution, given the service you have would be three things.

    Reduce the startup load. Change the motor pulley, to reduce pump speed and load.

    The motor is drawing over nameplate FLA, at the...
  8. Can you post a photo of the transformer tag?...

    Can you post a photo of the transformer tag? Normally adjustment taps are on the input side.

    Is yours a reverse connected unit?
    If so the taps will operate in reverse.

    What is your input...
  9. 2 Line leads would be switched, to change...

    2 Line leads would be switched, to change rotation.

    SAF Ω
  10. Replies
    23
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    805

    Instead of a control transformer, fusing, an...

    Instead of a control transformer, fusing, an outlet and a wall wart switch mode power supply, you might consider a switch mode power supply, 240VAC to 5VDC, intended for a control panel. Likely to...
  11. Replies
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    805

    Check your wall wart, many can accept up to 240V....

    Check your wall wart, many can accept up to 240V.

    What is it's output rated at, a new wall wart of the proper rating might be easier and cheaper?

    SAF Ω
  12. Replies
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    484

    The control transformer is wired for 480V input,...

    The control transformer is wired for 480V input, and 120V output for the controls.

    The motor is likely wired for 380V input, but powered at 480V 3Φ 60Hz.

    Motor will run fine at 480V 60Hz, but...
  13. Replies
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    886

    It can be done with two single phase units,...

    It can be done with two single phase units, 480/240 x 240/120, in a open delta configuration. The 480V output windings, output ungrounded open delta, as shown in the drawing. To ground the output...
  14. Replies
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    659

    Compressor circuit sizing.

    Beesr,

    Selecting a circuit makeup, and protecting a motor are separate functions, normally.
    The NEC requires that you use a code table for the motor HP size, to determine the the motor amps to...
  15. Replies
    27
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    1,890

    Adjustable overload relays are convenient, but...

    Adjustable overload relays are convenient, but usually contain differential protection, or as some call it phase loss protection. That's not usually the best choice for use with a RPC . If the...
  16. Replies
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    926

    If the point is to learn, then I would put it...

    If the point is to learn, then I would put it back to how it was and run it at 480V.

    Learn how it was designed to operate, with it's PLC control and tapping function, Do you need or desire the...
  17. Replies
    27
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    1,890

    Motor Starter Upgrade

    Myself, I would inspect the condition of the size 0 contacts first and clean them, if they were decent, I'd run them. NEMA starters are pretty tough.

    To be a purist there are many parts abounding...
  18. Replies
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    1,890

    That's what I would do. And likely why the...

    That's what I would do. And likely why the starter used, has a dual voltage coil, so it could be converted.

    SAF Ω
  19. Replies
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    From the form of your sketch, i would guess that...

    From the form of your sketch, i would guess that you have a Furnace brand starter, with the dual voltage coil.

    If your compressor was previously wired for 480V, you likely need to change out the...
  20. Replies
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    1,890

    Air Compressor Control Wiring

    Hopefully this will help it make more sense.

    Make sure your overload relay is reset.
    Leave one probe on L1 and test all terminals on the L2 side.
    Leave one probe on L2 and test all terminals on...
  21. Replies
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    1,899

    Filling KO holes

    I use a similar method, for years now. But instead of cutting used blanks to fit, I save old ones. Any box headed to the scrap bin gets harvested. Makes for a faster patch and grind.

    261314
    ...
  22. Replies
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    I would check your primary voltage tap...

    I would check your primary voltage tap adjustments. Your input and output line voltages are higher than the nameplate voltages. This will saturate the magnetic core, more than necessary and produce...
  23. Replies
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    Masking tape, drill and a quality jigsaw with a...

    Masking tape, drill and a quality jigsaw with a fine tooth metal blade will make short work of those openings. Clean the edges with a file.

    SAF
  24. Replies
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    2,346

    Diagonal crossflow is best in a small enclosure....

    Diagonal crossflow is best in a small enclosure. One mounted low for inlet and one high for outlet. Powered fan kit is even better.

    Vent Kit | Thermal Management | nVent HOFFMAN

    Search Results...
  25. Replies
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    Looks like a garbage disposal with a flat platen...

    Looks like a garbage disposal with a flat platen would work fine, even has a seal on the output shaft.

    For speed control, use a 3phase model and a VFD. Check used restaurant equipment dealers or...
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