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Method for assessing motor insulation on operating motors

United States Patent

*** EXPIRED ***
March 18, 1997
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A method for monitoring the condition of electrical-motor-driven devices. The method is achieved by monitoring electrical variables associated with the functioning of an operating motor, applying these electrical variables to a three phase equivalent circuit and determining non-symmetrical faults in the operating motor based upon symmetrical components analysis techniques.
Kueck; John D. (Oak Ridge, TN), Otaduy; Pedro J. (Oak Ridge, TN)
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN)
08/ 568,550
December 7, 1995
This invention was made with Government support under contract DE-AC05-840R21400 awarded by the U.S. Department of Energy to Martin Marietta Energy Systems, Inc. and the Government has certain rights in this invention.