Jerry Lipski
Jerry Lipski, LLC
Scheerville, IN

Ever run across brush arcing or vexing commutation issues? This paper, presented at the 2013 EASA Convention, covers:

• Definition of commutation
• Basic magnetism
• Commutation and AC in a DC armature core
• Brush construction
• The basic commutator and placement of carbon brushes
• Carbon brush arcing; what are the brushes telling you? + field case studies
• Sanding brushes
• Most common surface conditions
• Field experiences with drives
• Brushholders
• Slip ring application
• Field settings (neutral, tape method)
• Field/service center testing

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