Digital Partial Discharge Measuring Detector FOR OFF-LINE TEST

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Main Features： The Domestic unique anti-interference mode can greatly attenuate the space interference of field test. By using high-speed and large-capacity DAQ card, it can acquire partial discharge data continuously with good reproducibility and high accuracy.  Multi-functions, such as test analysis(multi-parameter analysis, two dimensional spectrum analysis, three dimensional spectrum analysis ), data storage, report generation and printing, etc. It can display the waveform of partial discharge (ellipse, sine wave and linear), partial discharge level and test voltage. In the process of rectifying and testing, it can adjust the gain automatically without human intervention. Meanwhile, it is easy to operate.  It can adapt to different power sources with 50Hz power frequency, 150Hz third harmonic generation or 400Hz power. Open-window and open-door can be set freely minimum to one degree. It is with small volume and light weight. It is not only suitable for field test, such as electric power department and the factory workshop, but also for the scientific research. With high sensitivity and wide application of test object. Main Technical Parameters： Capacitance range of test product: 6pf～250μf Detection sensitivity:<0.02pc( at 50pf capacitance) Amplifier: 3db lower frequency(f1 10、20、40、50、80kHz) and 3db high frequency (fh 100 、200、300、400、500KHz)can be chosen optionally. Gain adjustable range is greater than 120db. The gain difference between each grade is 20±1db.The response asymmetry of positive and negative impulse is less than 1db. Time window: The window width is 1°~360°and the window position can be rotated freely. Test voltage meter: 0--200kV. Displaying error of digital meter: ＜3%F.S. Collection channel: 4 channels/card Input impedance: 1MΩ The highest sampling rate of DAQ card: 20MHZ AD Resolution ratio:12 BIT; DC Accuracy:0.2% The sampling length of each channel: 8M Triggering mode: manual, external and internal triggering. Bandwidth of DAQ card: 3MHZ（-3DB） Weight: about 15kgs.

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Shanghai GrandTop Lightning Technology Co., Ltd.

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