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Title: Method for assessing motor insulation on operating motors

A method for monitoring the condition of electrical-motor-driven devices is disclosed. 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. 15 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
458586
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 420200; PA: EDB-97:056566; SN: 97001758987
Patent Number(s):
US 5,612,601/A/
Application Number:
PAN: 8-568,550
Contract Number:
AC05-84OR21400
Resource Relation:
Other Information: PBD: 18 Mar 1997
Research Org:
Lockheed Martin Energy Syst Inc
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; EQUIPMENT; ELECTRIC MOTORS; MONITORING; ELECTRICAL INSULATION; ELECTRICAL FAULTS