AC Compressors

Discussion in 'General Electronics Chat' started by R!f@@, May 10, 2012.

  1. R!f@@

    Thread Starter AAC Fanatic!

    Apr 2, 2009
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    Like to know why we cannot use a 60Hz one.
    Our mains are at 50Hz.
     
  2. #12

    Expert

    Nov 30, 2010
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    Lower drive frequency causes the magnetic field to saturate. Smoke escapes.
     
  3. strantor

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    Could you make it work by changing the capacitor? or is the problem in the magnetics?
     
  4. shortbus

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    Not an ideal situation but it will work, within limits. A lot has to do with the voltage AND the Hz, as in the V/f ratio. For a good read on the matter this short link explains it real well - http://www.eng-tips.com/faqs.cfm?fid=1224
     
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  5. strantor

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    Good read indeed. Thanks.
     
  6. R!f@@

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    I want to run a 110V 60Hz compressor at 220V 50Hz.
    What are my options ?
     
  7. #12

    Expert

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    Apparently the motor will work if you reduce the voltage applied by 50/60 times the nameplate voltage rating.
    If it is really rated at 110 volts, you will have to give it 92 volts at 50 Hz.

    It will not produce the power it was designed for at 60Hz and 110 volts.
    Right?
     
  8. R!f@@

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    Are u sure ?
     
  9. #12

    Expert

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    Read the link in post#4
    I believe he is sure.
     
  10. strantor

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    What I would say after reading that writeup is that if you give it 92 volts at 50 Hz, it would have the best chance at working. Even if you gave it 92V, you still have the following to worry about (excerpts):
     
  11. debe

    Well-Known Member

    Sep 21, 2010
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    Some of the cheep compressors have barely bigenough motors on them & burn out easily. So running a 60HZ on 50 HZ may be not wise.
     
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