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  1. S

    Interpret this transformer label

    Thanks, I missed that detail. I'll be feeding this from a Phase Perfect, from their FAQ: My bit of googling has high leg != corner grounded. So in the interest of not damaging the electronics that will get hooked up to this transformer I should just by the new one? Do I need to tell the...
  2. S

    Interpret this transformer label

    Hello, I need a Delta-Wye transformer, and I need to step up from 240v to 600v*. I found this one used, the only thing that is a bit confusing is the primary is listed as 600v and the secondary as 240v. However the diagram and the labels seem to suggest it is a step up, and that is what the...
  3. S

    Step up transformer

    Out of curiosity what did you do differently to not trip the phase perfect? Just a matter of running the machine gently?
  4. S

    If no neutral wired to machine, can I use Delta source (Phase Perfect)?

    Thanks everyone! :)
  5. S

    If no neutral wired to machine, can I use Delta source (Phase Perfect)?

    OK, so I'll need a Delta to Wye transformer of some sort, so it's probably not worth getting the voltage doubler feature (an extra $1000) of the Phase Perfect, and instead put that money towards a step up delta-wye transformer to go between a non voltage doubling Phase Perfect and the machine?
  6. S

    If no neutral wired to machine, can I use Delta source (Phase Perfect)?

    Hello, Looking for some guidance on supplying power to a machine. Power Source - Typical North American residential single phase 240volt. Machine requirements 480v 3 phase. Was hoping to use a Phase Perfect with the voltage doubling feature so I do not need a transformer. The manual for the...
  7. S

    Can all VFDs convert single phase to 3 phase?

    If you like watching paint dry, I have a youtube video where I reform the caps in a VFD using the variac method The VFD will most likely turn on around 60% rated voltage with an undervoltage error. I've found most VFD's will run on single phase, even higher (600v) ones, as JST said you may...
  8. S

    Spreadsheet for Balancing

    Hello Conrad, I hope you don't mind, but I took your spread sheet and turned it into a modern web page, which should display on any modern browser across platforms (PC's, phones, tablets). It is available at this url: http://www.carter-engineering.com/balancecalc.html . It is a single web...
  9. S

    Spreadsheet for Balancing

    Hello Conrad, Thank you for making this available. This took the guess work out of balancing a 60" wheel. I used my iphone as the measurement source (most new phones have an accelerometer). I ordered these wheels from China and was told they would be balanced. One arrived with two large...
  10. S

    4140, 1045 or 1018 for this part?

    Hello, Just thought I would update. The adapters turned out well. Here are a few pictures, and a short video of Blaine at Mountain Machining turning the adapters on a 1905 Hendey lathe. More about the lathe here http://www.mountainmachining.ca/Hendey_Lathe.htm Mountain Machining...
  11. S

    4140, 1045 or 1018 for this part?

    Thanks for the suggestions and 1018 info. If I made it out of 12" stock I'd be leaving an awful lot of material on the ground, plus paying for a lot of time to machine down a 12" diameter piece to 4.3", but maybe that time equals the time spent welding the plate to the round. I don't know and...
  12. S

    4140, 1045 or 1018 for this part?

    How would I do that? Unfortunately the site seems to have resized the image so it may be hard to tell but the "backing plate" of the hub is 11.4" (290mm) in diameter, while the outer diameter of the hub is 4.3" (110mm). To machine the backing plate and hub as one piece I'd need 11.5" rounds to...
  13. S

    4140, 1045 or 1018 for this part?

    I had thought about that, but the wheels are made off shore and I can't get specs on the quality of the cast aluminum. Bolting the wheels to an adapter seems to be the way the vendor attaches the wheels to their saws, so I figure I should stick with what is known to work. The keyless bushings...
  14. S

    4140, 1045 or 1018 for this part?

    Thank guys. I picked up the 1018 CR.
  15. S

    4140, 1045 or 1018 for this part?

    Hello, I need to have this adapter plate made: The hub part (110mm diameter) needs to have a minimum yield strength of 45kpsi, to meet the requirements of the keyless bushing used to hold the adapter onto shaft. So I picked 1045 HR, as this was the example used by the keyless bushing...
  16. S

    Will a 2hp vfd power a 5 hp lathe for inspection purposes only?

    Did you get around to trying this out? Just curious how you made out.
  17. S

    Thanks to those who helped! Super Clean VFD Installation

    Where did you get the enclosure for the operator controls? How did you make/print the control markings on the front? The multi-coloured control blocks, are they just dumb terminals ? Thanks.
  18. S

    Motor to VFD size - Running 1/8 hp motor with 2 hp rated VFD

    some more pictures...
  19. S

    Motor to VFD size - Running 1/8 hp motor with 2 hp rated VFD

    OK some success, pictures and video below. I mentioned moving a "heavy load slowly", it is a trolley to move stone blocks while cutting them. So far I've tested the trolley with about 12000 lbs on it. Surprisingly, well to me, is how little torque it takes on the acme screw to move the...
  20. S

    Questions-old 3 phase buffalo drill

    VFD's work with 3 phase motors, not single phase. What maybe confusing you is how AB has worded it on their website. Usually you will see VFD's rated with the input volts/amps/phase and the output volts/amps/phase. On the website they only mention 1 phase for the input, as it is assumed 3...

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