专利名称：Portable detector device for detecting
partial electrical discharge in live voltagedistribution cables and/or equipment
发明人：Antonio Gonzalez申请号：US07/331293申请日：19890331公开号：US04967158A公开日：19901030
摘要：A portable detector device for detecting partial electrical discharge in livevoltage distribution cables and/or equipment. The device comprises a probe secured toan insulated portable handle for manual displacement of the probe. A detector device isconnected to the probe for detecting a signal in the range of 5 to 10 MHz emitted by thepartial discharge. The detector has an input attenuator circuit which is connected to theprobe to lower the level of the detected signal to a desired level. A transformationcircuit is further provided to change the detected signal to a predetermined frequencysignal substantially free of noise and representative of the magnitude of the detectedpartial discharge signal. An amplifier circuit amplifies the predetermined frequency signaland an output circuit generates signals indicative of the presence and magnitude of thepartial discharge.
申请人：HYDRO-QUEBEC
代理机构：Oblon, Spivak, McClelland, Maier & Neustadt
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