Patent No. EP2183608 (titled "Instrument And A Method For Detecting Partial Electrical Discharges Occurring In An Electric Apparatus") was filed by Techimp on Jan 31, 2008. The application was issued on Apr 6, 2022.
An instrument and method for detecting partial electrical discharges in high-voltage systems, comprising a broad-band acquisition stage and a narrow-band processing stage. The broad-band stage captures discharge impulses with a detection bandwidth of at least 2 MHz, while the narrow-band stage filters the signal to a predetermined bandwidth of less than 500 kHz. The filtered signal is then used to derive a calibration factor for estimating the charge transfer associated with the discharges.

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