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  1. #1
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    Start and Run winding



    Hi friends,
    I have a question, I surfed the internet but didnít find proper and clear answer.

    In a single phase compressors :

    Start winding is just for starting compressor and it is auxiliary ? Or both of Start and Run wiring both of them help compressor to work properly during running ?

    Thanks.



  2. #2
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    Re: Start and Run winding

    https://www.allaboutcircuits.com/tex...uction-motors/

    ThermaGroup / ThermaCom did a "Field Compressor Guide" PDF, is also a handy thing if you can find it
    Last edited by seanf; 05-09-2022 at 09:01 PM.

  3. #3
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    Re: Start and Run winding

    Hi Guys.
    I posted the Thermacom manual in 2007 and surprisingly it is still available on Thermacom's Website!
    There is a link at the bottom of their homepage. You have to supply some personal info. But If you cannot access it via my link (which i hope works?)
    https://www.mediafire.com/file/ol3bl...group.pdf/file
    Then it is still very useful and Bless Thermacom for providing such useful document. Because a good Engineer will always tell you. "If in doubt revert to the basics!"
    Enjoy Grizzly
    Despite the High Cost of Living it still remains Popular!

  4. #4
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    Re: Start and Run winding

    Grizzly,
    Still very good information.

    Not what was requested, but this link from Brainerd is pretty good for compressors as well

    Start winding for start, then switches to run winding.
    Run, Start,Common connection on compressor, work out using ohm meter.

    https://brainerdcompressor.com/wp-co...ms_IN-1559.pdf
    Last edited by RANGER1; 06-09-2022 at 10:01 PM.

  5. #5
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    Re: Start and Run winding

    I did like the Info on Single Phase Motors. An area I am weak on.
    https://www.allaboutcircuits.com/tex...uction-motors/

    This comment bothered me a bit however!

    A three-phase motor may be run from a single-phase power source. However, it will not self-start. It may be hand started in either direction, coming up to speed in a few seconds. It will only develop 2/3 of the 3-φ power rating because one winding is not used.

    II hope no one relies on this as in my experience it rapidly leads to Motor Failure!

  6. #6
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    Re: Start and Run winding

    Quote Originally Posted by NH3LVR View Post
    I did like the Info on Single Phase Motors. An area I am weak on.
    https://www.allaboutcircuits.com/tex...uction-motors/

    This comment bothered me a bit however!

    A three-phase motor may be run from a single-phase power source. However, it will not self-start. It may be hand started in either direction, coming up to speed in a few seconds. It will only develop 2/3 of the 3-φ power rating because one winding is not used.

    II hope no one relies on this as in my experience it rapidly leads to Motor Failure!
    NH3LVR, would take it with a grain of salt.
    Just informing what is possible, only MacGiver (or Knighty) would do it to get out of a life threatening situation.
    Last edited by RANGER1; 10-09-2022 at 12:24 AM.

  7. #7
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    Re: Start and Run winding

    I was just afraid an inexperienced person would try that!

  8. #8
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    Re: Start and Run winding

    Quote Originally Posted by RANGER1 View Post
    NH3LVR, would take it with a grain of salt.
    Just informing what is possible, only MacGiver (or Knighty) would do it to get out of a life threatening situation.
    is it bad that as I read that I was thinking you can make a single phase to 3 phase converter doing that (think you need to add a couple of capacitors too)

    :-o

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