Alternatives for assessing the electrical integrity of induction motors

Jeffery L. Kohler, Joseph Sottile, Frederick C. Trutt

Research output: Contribution to journalConference articlepeer-review

15 Scopus citations


The authors present alternatives appropriate for detecting incipient failures in three-phase induction motors of the sizes commonly found in the process industries, with an emphasis on techniques resulting from a recently completed project. The techniques discussed are divided into three categories: periodic tests, sequence tests, and the decision-function method. The use of the effective negative-sequence impedance test is recommended for in-plant predictive maintenance applications. This test is sensitive to a wide range of degradation mechanisms that will ultimately result in motor failure, and its use can allow for timely repair of the motor before costly downtime or a catastrophic failure is incurred. The technique can be applied while the motor is in operation. It is recommended that this predictor be monitored continuously, rather than being applied on a periodic basis, because an appropriate interval between tests cannot yet be defined. The use of the decision-function method will allow a more detailed analysis of motor performance and condition. However, the price for achieving this increased information is high and may not be warranted in many situations.

Original languageEnglish (US)
Pages (from-to)1580-1586
Number of pages7
JournalConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
Issue numberpt 2
StatePublished - 1989
EventConference Record of the 1989 IEEE Industry Applications Society Annual Meeting - Presented at the 24th IAS Annual Meeting.Part II - San Diego, CA, USA
Duration: Oct 1 1989Oct 5 1989

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


Dive into the research topics of 'Alternatives for assessing the electrical integrity of induction motors'. Together they form a unique fingerprint.

Cite this