troubleshooting chart for dc electrical machines

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gjo

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On the chart it says commutator sparking of brushes that a probable causr would be commutationwindings defective. What does commutation windings defective mean?
 

gjo said:
On the chart it says commutator sparking of brushes that a probable causr would be commutationwindings defective. What does commutation windings defective mean?
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Commutator (electric)
https://en.wikipedia.org/wiki/Commutator_(electric)


Commutator pictures:





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Bad commutator pictures:

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**broken link removed**

**broken link removed**


Best regards,
Peter
 

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