Method and Device for Monitoring a Circuit Breaker
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United States of America
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Jan 20, 2022
app pub date -
Dec 24, 2018
filing date -
Dec 24, 2018
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Abstract
Methods for monitoring a circuit breaker include detecting at least one operation of a circuit breaker to obtain at least one vibration signal of the circuit breaker. Each vibration signal is represented as one-dimensional data of a vibration amplitude over time during the operation of the circuit breaker. The vibration signal is transformed to two-dimensional frequency-time data. The transformed frequency-time data is compared with benchmark data characterizing the at least one operation of the circuit breaker. A health condition is determined of the circuit breaker at least in part based on the comparison. Both the frequency component and the time component in the detected test vibration signals are considered in condition determination of the circuit breaker. The condition can be determined with high accuracy.
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