Electricity: measuring and testing – Electromechanical switching device – Relay
Reexamination Certificate
2005-11-15
2005-11-15
Deb, Anjan (Department: 2858)
Electricity: measuring and testing
Electromechanical switching device
Relay
C324S424000, C324S076150, C324S525000
Reexamination Certificate
active
06965238
ABSTRACT:
Methods, computer program segment and apparatus for analyzing high voltage circuit breakers are provided. The method includes determining a circuit breaker contact closing time, determining a circuit breaker contact opening time, and determining a circuit breaker pre-insertion resistor resistance value using at least three voltage samples and three current samples to facilitate reducing an induced current measurement error. The computer program segment is embodied on a computer readable media and is programmed to determine a circuit breaker contact closing time, determine a circuit breaker contact opening time, and determine a circuit breaker pre-insertion resistor resistance value using at least three voltage samples and three current samples that facilitate minimizing an induced current measurement error. The apparatus includes a testing circuit, an overvoltage protection circuit, and a processor programmed to determine a circuit breaker contact timing measurement and a circuit breaker contact resistance measurement.
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Rudholm Stig Olov
Wacklen Nils Fredrik
Armstrong Teasdale LLP
Deb Anjan
Natalini Jeff
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