Principle of Online Partial Discharge Tester:
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The partial discharge detector detects the high-frequency noise generated by the ionization of air molecules caused by arcs, tracking, and corona. Using the "heterodyne method," it translates this into audible sound signals. Under normal conditions, electrical equipment should be silent, although there may be a continuous hum or steady mechanical noise, which is completely different from the sound signals produced by partial discharge. By receiving the ultrasonic signals generated by electrical equipment through the instrument and analyzing their quality and intensity,
Usage of Online Partial Discharge Detector
1) Temperature: -10℃ to 50℃
2) Relative Humidity: ≤95%.
3) Altitude: ≤1000m
Technical Parameters of the Online Partial Discharge Detector Host
Measurement Channels: 8 measurement channels
Sampling Accuracy: 12Bit
Sampling Rate: 20MHz per channel (expandable to 80MHz)
Detection Sensitivity: 1pC
Measurement Range: 1pC to 10000pC
Dynamic Range: Greater than 80dB;
Capacitance Range of Test Object: 6pF to 250μF
Measurement Bandwidth (3dB): 10kHz to 1MHz.
Programmable Filter Segments:
Low-pass filters: 100KHz, 200KHz, 300KHz, 600KHz;
High-pass filters: 20kHz, 40kHz, 80kHz, 150kHz
(High-pass and low-pass filters can be selected arbitrarily)
Voltage Surge Withstand Capability: 2500V, port ground, power supply terminal, to ground (positive and negative)
Power Supply: AC220V±10%; 50Hz; Power < 100W
Note: The above information and technical parameters are compiled and released by Yangzhou Dary Electric Co., Ltd.!
