Detecting turn insulation failures in motor coils using ground current signals

Ayman H. El-Hag, Ahmed Gaouda, Shesha Jayaram, Saeed Ul-Haq

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper proposes a procedure for monitoring the status of the turn-to-turn insulation subjected to steep front impulse voltage using the line-to-ground leakage current as a signature. Medium voltage motor coils with rated voltage of 4kV are tested using steep front impulse voltages with rise time of 100ns. It has been found that the signature of the ground current is unique for a specific coil and it is voltage independent. Moreover, it has been observed that the recorded turn-to-ground current is more sensitive to turn-to-turn insulation damage than the applied impulse voltage waveform. Hence, by analyzing the line-to-ground leakage current the turn-to-turn insulation failures can be assessed.

Original languageEnglish
Pages399-402
Number of pages4
DOIs
Publication statusPublished - 2013
Event2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems, IEEE CATCON 2013 - Kolkata, India
Duration: Dec 6 2013Dec 8 2013

Other

Other2013 IEEE 1st International Conference on Condition Assessment Techniques in Electrical Systems, IEEE CATCON 2013
Country/TerritoryIndia
CityKolkata
Period12/6/1312/8/13

Keywords

  • steep front transients
  • turn-turn insulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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