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  1. #1
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    Post Part wind motors



    Hi guys i was wondering if anyone has any diagrams on part wind start motors need to know more about them but dont really know where to start



  2. #2
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    Re: Part wind motors

    Plenty of information on the net if you Google part wind motor starting

  3. #3
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    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
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    Re: Part wind motors

    You start with a contactor or better still two. Sorry, couldn't resist.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

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    Re: Part wind motors

    Quote Originally Posted by Charlieeidy View Post
    Hi guys i was wondering if anyone has any diagrams on part wind start motors need to know more about them but dont really know where to start


    http://www.emersonclimate.com/europe...i_Stream_0.pdf

    See page 4 and it gives a good diagram of part wind and star-delta.

    For part wind you basically have 2 winding's wound around the same
    stator in the motor. Both winding's on together would = 100% so
    each winding makes up part of that 100%. Normally 75% and 25%
    but 60% and 40% or even 50% and 50% are used dependent on the
    motor starting loads.

    To start the motor the first winding contactor energises and brings in
    the first part of the winding and any time between 2 and 10 seconds
    later the second winding contactor energises.

    It is used to assist the starting of the motor and is mostly used in conjunction
    with compressor unloaders. As the compressor starts up the unloaders
    unload the pressure and the comp then takes the time to achieve full
    rotational speed before the compressor loads up again.

    Rob

    .
    .. ... -. .----. - / -- --- .-. ... . / -.-. --- -.. . / --. --- --- -..

  5. #5
    moideen's Avatar
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    Re: Part wind motors

    bitzer file about part winding

    bitzer part winding inform.pdf

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