Vacuum monitor for vacuum interrupter

Details Vacuum monitor for vacuum interrupter Vacuum monitor for vacuum interrupter

1983-06-22

1985-11-12

Rowland, James L.

Communications: electrical

Condition responsive indicating system

Specific condition

340644, 340605, G08B 2100

Patent

active

045531390

ABSTRACT:
A vacuum monitor for a vacuum interrupter which can detect poor vacuum pressure at high detection sensitivity from the outside of the interrupter, on the basis of the impulsive electromagnetic wave signals generated when vacuum pressure increases within the vacuum interrupter. The vacuum monitor according to the present invention comprises, in particular, a detector terminal of capacitor coupler type or inductor coupler type disposed near a high voltage conductor for receiving impulsive electromagnetic wave signals, a signal level discriminating section, and a diagnosis section for improving the reliability of the monitor, particularly when the detected signal level of the electromagnetic wave signals is low.

REFERENCES:
patent: 3403297 (1968-09-01), Crouch
patent: 3594754 (1971-07-01), Voshall
patent: 4021702 (1977-05-01), Rimmrott
patent: 4103291 (1978-07-01), Howe et al.
patent: 4402224 (1983-09-01), Fukushima

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