Case studies of stator winding turn insulation failures in medium voltage motors

Sang Bin Lee, Tae June Kang, Heedong Kim, Taesik Kong, Chaewoong Lim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Breakdown of the stator winding turn insulation is a frequent cause of stator insulation failure leading to forced outage of medium voltage (MV) motors. Case studies of 15 turn insulation failures in mains-fed MV motors that occurred in Korea between 2011-2015 in the pulp and paper, power generation, and petrochemical industries are presented in this paper. The turn insulation failures are analyzed based on the insulation system design, motor operating conditions, fault location and pattern of the motor failures. Stator insulation inspection and test records including the insulation resistance (IR), polarization index (PI), leakage current, dissipation factor, and partial discharge (PD) tests for the failed motors are also shown. An insight into how stator winding turn insulation failures can be prevented is provided based on the investigation of the failures.

Original languageEnglish
Title of host publicationConference Record of 2017 Annual Pulp, Paper and Forest Industries Technical Conference, PPFIC 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781509052875
DOIs
Publication statusPublished - 2017 Aug 7
Event2017 Annual Pulp, Paper and Forest Industries Technical Conference, PPFIC 2017 - Tacoma, United States
Duration: 2017 Jun 182017 Jun 23

Other

Other2017 Annual Pulp, Paper and Forest Industries Technical Conference, PPFIC 2017
CountryUnited States
CityTacoma
Period17/6/1817/6/23

Keywords

  • AC Rotating Machines
  • Insulation Testing
  • Medium Voltage (MV) Motors
  • Predictive Maintenance (PM)
  • Stator Winding Insulation
  • Turn Insulation Failure

ASJC Scopus subject areas

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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  • Cite this

    Lee, S. B., Kang, T. J., Kim, H., Kong, T., & Lim, C. (2017). Case studies of stator winding turn insulation failures in medium voltage motors. In Conference Record of 2017 Annual Pulp, Paper and Forest Industries Technical Conference, PPFIC 2017 [8003858] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/PPIC.2017.8003858