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The data covers both normal operating conditions and various simulated defects. The measurements were obtained using a specialized coil current emulator, the details of which are documented in the associated publication: Machine Learning-Based High-Voltage Circuit Breaker Defect Classification Utilizing Savitzky–Golay Filter (10.1109/TIM.2025.3604980).\n\nData Acquisition\n\n\n\n\n\nSensor: ACS712 Hall-effect current sensor.\n\n\n\n\nSampling Frequency: Approximately 6.1 kHz.\n\n\n\nDataset Structure\n\nThe dataset is provided in a XLS format where each row represents a single measurement. The first column indicates the operational state or defect type as follows:\n\n\n\n\n\nNorm: Normal operation of the coil (Baseline).\n\n\n\n\nAux: Auxiliary contact defect.\n\n\n\n\nLatch: Latch operation/mechanical defect.\n\n\n\n\nVoltRes: Supply voltage defect (Resistive/Voltage drop).\n\n\n\nUsage Note\n\nResearchers utilizing this dataset are encouraged to refer to the main paper (DOI listed above) for a detailed explanation of the feature extraction techniques and the physical parameters of the emulator used to generate these signals. These signals are optimized for feature extraction and the development of predictive maintenance algorithms for high-voltage 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