Apparatus for triggering alarms and waveform capture in an electric power system
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United States of America Patent
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Jan 6, 1998
Grant Date -
N/A
app pub date -
Feb 28, 1996
filing date -
Feb 28, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A monitor/analyzer for an ac electrical system can be programmed through a display on the front panel to respond to selected events by generating triggers signals when selected monitored electrical parameters including neutral current exceed programmed thresholds. The trigger signals initiate simultaneous waveform capture of multiple waveforms in the ac system. Multiple trigger signals result in sequential waveform capture so that if a plurality of triggers are programmed for the same event, extended waveform data is captured for the event. Alarm screens are generated in response to the events, as well as for hardware failure, an excessive neutral-to-ground voltage or reverse sequence.
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