METHOD AND APPARATUS FOR DIAGNOSING OVERHEATING OF AN ELECTRIC MACHINE

A method and apparatus for diagnosing an overheating of a gas-cooled type electric machine having at least some components coated with an organic insulating material which decomposses into particles when subjected to high temperatures. The apparatus includes an extracting arrangement for enabling an...

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Bibliographic Details
Main Authors OHTSUKA, KEIZOU, NARATO, KIYOSHI, NIWA, SADAHIKO
Format Patent
LanguageEnglish
French
Published 07.06.1983
Edition3
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
GENERATION
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:A method and apparatus for diagnosing an overheating of a gas-cooled type electric machine having at least some components coated with an organic insulating material which decomposses into particles when subjected to high temperatures. The apparatus includes an extracting arrangement for enabling an extraction of gas from any region in an interior space of the electric machine. A device is provided for detecting a density of the particles contained in the gas and an arrangement is provided for analyzing a composition of the particles in the coolant gas so that, at first, an overheat region may be found and, secondly, an overheat position in the overheat region can be determined on the basis of the organic composition of the particles contained in the coolant gas.
Bibliography:Application Number: CA19800359681