Circuit breaker interrupter sequence monitor
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United States of America Patent
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Sep 14, 1993
Issued Date -
N/A
app pub date -
Nov 20, 1992
filing date -
Nov 12, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The operation of energized substation circuit breakers in electrical power distribution systems is directly monitored. For each circuit breaker in a multi-phase breaker arrangement, the flow of electrical current is sensed. A signal is then formed for each phase representative of the sensed current flow. The signals so formed for the multi-phases are combined into a composite waveform for monitoring and diagnostic purposes. In the composite waveform, the signal for each phase of the circuit breaker is identifiable by its time relationship to others and by a distinctive voltage level.
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