Method and system for monitoring circuit breaker gas pressure

Details Method and system for monitoring circuit breaker gas pressure Method and system for monitoring circuit breaker gas pressure

1994-04-06

1996-03-26

Peng, John K.

Communications: electrical

Condition responsive indicating system

Specific condition

340605, 340626, 340638, 361619, 364558, 73438, 73 3002, 218 48, G08B 2100

Patent

active

055024351

ABSTRACT:
A method and system are provided for monitoring the pressure of gas in a gas filled circuit breaker container based on a temperature compensated gas pressure signal which is compared with a signal representing a desired gas pressure in the container to provide a signal indicating a gas leak when the actual pressure is less than the desired pressure. In addition to identifying a gas leak, the method and system is operable to deactivate the circuit breaker when the actual pressure decreases below a predetermined low pressure, to determine the gas leak rate and to deactivate the circuit breaker if the leak rate is greater than a predetermined acceptable rate and, otherwise, to determine the time required for the pressure to decrease to the unacceptable low pressure, and to activate an alarm, visual display and/or recording of information in response to certain detected conditions with respect to the gas pressure.

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patent: 5201212 (1993-04-01), Williams
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