Monitoring of decomposition gases in transformers by referencing

Details Monitoring of decomposition gases in transformers by referencing Monitoring of decomposition gases in transformers by referencing

1996-12-23

1999-05-04

Oda, Christine K.

Measuring and testing

With fluid pressure

Leakage

73295, 340605, G01M 304

Patent

active

059005386

ABSTRACT:
By referencing either liquid volume or liquid pressure to liquid temperature, either in an implicit way and mechanically or in a non-implicit way and metronomically, the development of an electrical fault or loss of liquid can be detected. The present invention is based on the principle that any deviation from the relation between temperature and volume of a liquid, or, by implication, temperature and pressure in that liquid--the latter relation being applicable to closed systems only--is indicative either of an electrical fault in the transformer or of liquid loss from the transformer.

REFERENCES:
patent: 4148086 (1979-04-01), Landa
patent: 4223364 (1980-09-01), Sangster
patent: 4908730 (1990-03-01), Westrom
patent: 5281955 (1994-01-01), Reich

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