Method and apparatus for diagnosing local overheating in a rotar

Details Method and apparatus for diagnosing local overheating in a rotar Method and apparatus for diagnosing local overheating in a rotar

1980-12-04

1982-12-14

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

73 28, 324 71CP, 340584, 340647, 436 7, G08B 1712

Patent

active

043640320

ABSTRACT:
In a gas cooled rotary electric machine using insulating coating material which is subjected to thermal-decomposition when the insulating coating material is exposed to high temperatures thereby generating submicron particles, the concentration in the cooling gas of submicron particles generated through thermal-decomposition of the insulating coating material and distributed in the cooling gas is detected and an alarm signal is issued when the time-integration of a signal representing the concentration of the submicron particles exceeds a predetermined reference integration value.

REFERENCES:
patent: 3427880 (1969-02-01), Grobel et al.
patent: 3702561 (1972-11-01), Carson et al.
patent: 3775763 (1973-11-01), Couch et al.
patent: 4074137 (1978-02-01), Carson et al.
patent: 4121458 (1978-10-01), Fort
patent: 4160908 (1979-07-01), Phillips

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