Method and apparatus for diagnosing oil-filled electric apparatu

Details Method and apparatus for diagnosing oil-filled electric apparatu Method and apparatus for diagnosing oil-filled electric apparatu

1982-07-20

1985-03-05

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Gas chromatography

73 19, G01N 3100

Patent

active

045023204

ABSTRACT:
Method and apparatus for diagnosing abnormality of an oil-filled electric apparatus is disclosed. Presence or absence of abnormality is determined by comparing contents of plural predetermined components contained in gas extracted from the oil of the electric apparatus with respective predetermined reference values. The type of abnormality is determined on the basis of at least one set of two specific components selected from the plural components.

REFERENCES:
patent: 4148086 (1979-04-01), Landa et al.
patent: 4236404 (1980-12-01), Ketchum et al.
patent: 4402211 (1983-09-01), Sugawara et al.
International Electrotechnical Commission, Publication No. 599, "Inter. of Anal. of Gases in Transformers and other Oil-Filled Elec. Equip.", pp. 3-25(odd pages), Nov. 1977.

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