Element and device for detecting internal faults in an insulatin

Details Element and device for detecting internal faults in an insulatin Element and device for detecting internal faults in an insulatin

1988-01-27

1989-06-13

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

73 23, 73 27R, 338 34, 340634, 361 1, 422 98, H02H 500, G01N 2712

Patent

active

048397679

ABSTRACT:
An element for detecting internal faults in an insulating gas charged electrical apparatus comprises a substrate disposed in the electrical apparatus charged with an insulating gas, a pair of electrodes disposed on the substrate, and a thin metal film covering the pair of electrodes and the exposed surface of the substrate. This film is capable of producing fluorides with low conductivity upon reacting with a decomposed gas produced by internal faults of the electrical apparatus. Since the thin metal film exhibits high response characteristics readily in reaction with even a trace amount of a decomposed gas, it is possible to promptly detect faults occurring in the electrical apparatus, such as a partial discharge or local heating. In addition, a device for detecting internal faults in an insulating gas charge electrical apparatus using the internal fault detection element utilizes an optical signal for transmitting signals. Accordingly, the device is free from electromagnetically induced interference and is capable of remote monitoring because of the low level of loss in signal transmission.

REFERENCES:
patent: 3648110 (1972-03-01), Knight
patent: 3970431 (1976-07-01), Wise
patent: 4046512 (1977-09-01), Kaczmarek et al.
patent: 4092119 (1978-05-01), Baier et al.
patent: 4170770 (1979-10-01), Ichinose et al.
patent: 4259292 (1981-03-01), Ichinose et al.
patent: 4271124 (1981-06-01), Speeter
patent: 4324761 (1982-04-01), Harris
patent: 4394635 (1983-07-01), Foss
patent: 4436699 (1984-03-01), Narato et al.
patent: 4457161 (1984-07-01), Iwanaga et al.
patent: 4481499 (1984-11-01), Arima et al.
patent: 4505146 (1985-03-01), Miners
patent: 4509034 (1985-04-01), Sakai
patent: 4534099 (1985-08-01), Howe
patent: 4555930 (1985-12-01), Leach et al.
patent: 4661320 (1987-04-01), Ito et al.
patent: 4685018 (1987-08-01), Tada et al.
patent: 4685325 (1987-08-01), Warchol
patent: 4688136 (1987-08-01), Yamauchi
patent: 4704607 (1987-11-01), Teather et al.
patent: 4709291 (1987-11-01), Eggert et al.
patent: 4723439 (1988-02-01), Asakura et al.
"R&D Status Report Electrical Systems Division", EPRI Journal, Mar. 1982, pp. 42-46.
Van Nostrand's Scientific Encyclopedia Fifth Edition "Thermoelectric Cooling".
EPRI report, Oct. 1982.

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