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  1. for this application wouldn't grease be better?

    for this application wouldn't grease be better?
  2. bill you need to find something to do with your...

    bill you need to find something to do with your life besides type out more creative explanations of the same damn thing each time the subject comes up.
  3. its common to use two transformers instead of 3...

    its common to use two transformers instead of 3 for a couple reasons.

    you may be able to simply pull the wires off the H1 and H4 connection and swap them, on both transformers.

    are the H2 and...
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    I would leave it as is. if you use it enough to...

    I would leave it as is. if you use it enough to start polishing out the machining marks then lets talk about flaking and scraping it.

    putting oil retaining divots in the bed only helps crap get...
  5. correct, and we don't know either. your cnc...

    correct, and we don't know either.


    your cnc router may be safe with 240vac which means you'll have even more margin.. that is find a 16/32v buck boost transformer and it will add 27 volts, or 32...
  6. The current is leading but the current only flows...

    The current is leading but the current only flows for 1 to 2ms of time between 160 to 180vdc at the top of the waveform.

    Google: powerfactor of singlephase rectifier.
  7. That's a lot of money for a metal box with 3,...

    That's a lot of money for a metal box with 3, 100uf capacitors in it. (or whatever the number is) and it will only offset about 8 amps. you need to offset the 100+ amps the compressor consumes at...
  8. A 1.5 hp motor is probably 70% efficient...

    A 1.5 hp motor is probably 70% efficient requiring 1600 watts electrical input. this is 13 amps at unity power factor from a 120v circuit.

    Problem is the power factor of a voltage doubling...
  9. the vfd has a voltage doubling rectifier on the...

    the vfd has a voltage doubling rectifier on the front end.

    for less than 300$ you could just buy a single phase 120/240v motor.

    also, the power factor of a vfd is rather horrible. you will...
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    hydrogen is an energy transport material. not...

    hydrogen is an energy transport material.

    not the spam you were looking for
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    20/10 HP 1705/855 RPM 575 Volt AC 3Ph General...

    20/10 HP 1705/855 RPM 575 Volt AC 3Ph General Electric Motor | 3 Phase Motors Base Mount | 3 Phase AC Motors | Electric Motors | www.surpluscenter.com

    471 pounds two speeds 20/10hp.

    Could take...
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    Some of my grandfather's morse taper drill bits...

    Some of my grandfather's morse taper drill bits work fine in mild steel without a pilot hole, but i've touched them up by hand for center cutting.

    I would be concerned about the tail stock being...
  13. Yes you can do that, the neutral will carry the...

    Yes you can do that, the neutral will carry the sum of both 110 and 230v loads.
  14. Yes leave the primary disconnected. Put 230v...

    Yes leave the primary disconnected. Put 230v across x1 and x4, connect x2 to x3 and you have 110 volts from both x1 and x4 to x2and3.

    The transformer only has to supply the difference if you have...
  15. what is the reason you need to do this? You...

    what is the reason you need to do this?

    You can use the secondary alone as a 240/120v auto transformer, in which case you can get 3kva worth of 110 volts out of it. (you will also get 480 out of...
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    you got close with your drawing but one of the...

    you got close with your drawing but one of the elements is not getting power.

    in the drawing you have two relays, from the top down they get power on the left side from L1, L2, L3, L3

    the input...
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    Yes and that is the watts output of the shaft. ...

    Yes and that is the watts output of the shaft.

    Multiply volts x amps x pf x efficiency it should equal the kilowatt rating of the motor.
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    Resources - Cress Manufacturing Company Inc....

    Resources - Cress Manufacturing Company Inc.


    It appears to me that your furnace has solid state relays. They are essentially triacs or scrs back to back. They typically wait until there is 30...
  19. Cyanide kid what do you use for stainless brazing...

    Cyanide kid what do you use for stainless brazing that doesnt have zinc in it?
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    Sounds like a triac or act phase angle control on...

    Sounds like a triac or act phase angle control on the oven. Convert it to single phase and run it from the line.

    Or replace the pid controllers and use a relay. Heating element life may not be as...
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    I agree with hermetic in general, yes better...

    I agree with hermetic in general, yes better insulation and stator metal allows smaller cheaper and hotter motors.

    Disagree about this electrical watts stuff, as ive never yet seen an induction...
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    I would have expected a bit more than that....

    I would have expected a bit more than that. typical to supply 15v to the gate to turn on and - something to turn off. i would expect at least 10 volts for turn on, -5 volts to keep it off. or it may...
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    Bill that would theoretically work, but you would...

    Bill that would theoretically work, but you would have to open the motor and bring out all 12 leads for the 6 separate coils.

    I just don't think the motor will have any thermal or magnetic budget...
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    If the output voltage sensing network is damaged...

    If the output voltage sensing network is damaged it may think it is delivering full voltage.

    Does it have a transformer and then a resistive voltage divider in front of an opamp or an Adc?
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    Take it, i have 3 phase at work.

    Take it, i have 3 phase at work.
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