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Phase-to-Phase Inductance Measurements

 



June 10, 2013 

Routine offline and shop stage gate tests should include Phase-to-Phase Inductance measurements. Phase-to-Phase measurements can be useful for diagnosing a variety of situations:

  • Poor or incorrect rework such as reversed coil winding leads
  • Faults in power cables or main contacts in the power circuit
  • Air gap eccentricity problems
  • Shorted turns such as stator phase-to-phase and coil-to-coil
  • Rotor porosity and lamination damage
  • Broken/cracked rotor bars or end rings
  •  

    For more information read Influence of Residual Flux on the Measurement of Inductance at

    http://www.pdma.com/pdfs/Articles/Influence_of_Residual_Flux_on_the_Measurement_of_Inductance.pdf.

     

     

     

     

     
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