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  1. Replies
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    558

    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...
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    558

    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
  3. Replies
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    389

    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...
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    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...
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    549

    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...
  6. Replies
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    1,709

    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...
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    810

    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...
  8. Replies
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    1,709

    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...
  9. Replies
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    1,709

    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
  10. Replies
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    1,709

    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...
  11. Replies
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    1,709

    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...
  12. Replies
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    1,819

    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
    ...
  13. 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...
  14. Replies
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    2,168

    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
  15. Replies
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    2,168

    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...
  16. Replies
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    1,586

    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...
  17. Replies
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    1,454

    Have a look here for some reference information....

    Have a look here for some reference information.

    Baldor Basics

    The Hot Issue of Motor Temperature Ratings

    When it comes to motors, how hot is hot?

    SAF Ω
  18. Replies
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    Would this 12VDC system be adaptable to your use?...

    Would this 12VDC system be adaptable to your use?

    QuickCarb™ | Blichmann Engineering
    ...
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    Just went through this problem on a buddy's older...

    Just went through this problem on a buddy's older model 25HP Scag zero turn mower. The electronic ignition timing module, safety interlock module and clutch switch were having longevity issues....
  20. Replies
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    Identifing Unmarked Motor Leads

    Sounds like you need to invest in a megger, and take your gun in with the machine, if that's what you need to get the stator out with. Ask the motor shop to run the rotor on the growler first, before...
  21. Thread: 220vac 3 phase?

    by SAF
    Replies
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    3,113

    240V Center Tapped Delta System

    My take on it. The outside cover label is only is only partially wrong. States 150A, that is the size of the internal bus rating. But the rest of the info appears correct from the contractor...
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    You likely have your windings crossed. On your...

    You likely have your windings crossed. On your typical 9 lead dual voltage motor, #7,8,9 should never be rolled.

    It would be helpful if you stated the voltage your trying to run at, along with the...
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    A bit more info, pictures and data sizes, if you...

    A bit more info, pictures and data sizes, if you want to fab one.

    https://www.regalpts.com/PowerTransmissionSolutions/Sell%20Sheet-%20Product/Form_9879E.pdf
    ...
  24. I would be asking what is the input power...

    I would be asking what is the input power requirements. 5KW output, likely means the input is higher.
    Does it require 1 or 3Φ. Can it operate properly from 60Hz?
    What would be required to remote...
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    Partsproduction. A few thoughts from different...

    Partsproduction. A few thoughts from different perspective, for what it's worth.

    From information given: One burned up spindle drive, 30 year shop, 230V 3Φ 200A service, 30K drive repair.

    Any...
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