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troubleshooting dc electrical machines

Discussion in 'General Electronics Discussion' started by gjoo, Jun 11, 2013.

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  1. gjoo

    gjoo

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    May 22, 2013
    What does it mean on the troubleshooting chart for dc electrical machines, that when the commutator brushes spark that this is caused by commutation windings defective.
     
  2. davenn

    davenn Moderator

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    Sep 5, 2009
    it means there may be a shortcircuit across some of the windings leading to a higher current and that would cause more sparking than would be normal

    D
     
  3. gjoo

    gjoo

    34
    1
    May 22, 2013
    Your saying the armature winding.might have a shorted winding
     
  4. davenn

    davenn Moderator

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    Sep 5, 2009
    thats what I said :)
     
  5. duke37

    duke37

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    Jan 9, 2011
    It might also be due to an open circuited winding. You could measure the resistance between segments or measure the resistance across the brushes. Usually, the faulty winding will be linked a burnt commutator segment.
     
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