Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of individual circuit component or element
Reexamination Certificate
2006-07-18
2006-07-18
Nguyen, Vinh (Department: 2829)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of individual circuit component or element
C324S1540PB, C324S701000, C324S142000
Reexamination Certificate
active
07078925
ABSTRACT:
A three-phase monitoring system for detecting and dynamically correcting wiring errors in an electrical circuit. The system includes a voltage divider circuit and a current transformer circuit connected to three voltage channels and three current channels, respectively. Samples of the voltages and currents are held in respective sample and hold circuits, which are provided to an analog multiplexer. The analog multiplexer is controlled by a processor, and is coupled to gain and filter circuitry, sample and hold circuitry, and to an analog-to-digital converter (ADC). The ADC is connected to the processor, which analyzes the power factor for a given voltage/current pair. If the power factor is outside of an expected range, the processor dynamically changes the addresses assigned to the channels such that the data arrives in the processor in an expected sequence.
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Nguyen Jimmy
Nguyen Vinh
Square D Company
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