MEJFD-2010 Multi-channel digital partial discharge meter Send email to us

1. Can be connected to MES and ERP systems.
2. Also has AC partial discharge test function.
3. Independent two-channel digital partial discharge measurement, synchronous sampling, processing, and display.
4. Internal and external synchronization can be selected at will, and it has zero mark indication and phase resolution functions.
5. Display mode: Freely select three display modes: ellipse, straight line, and sine.
6. Single discharge pulse waveform analysis to determine the discharge properties.
7. Save test data and waveforms at any time, and can re-display and analyze the test records saved in the past.
8. Gain range: Each channel is adjusted separately, and the waveform display can be smoothly adjusted at any time without affecting the measurement results.
9. Special or random waveforms can be captured and captured once and analyzed in detail.
10. Anti-static interference function, which can remove interference signals with fixed phases.
11. Correlation filtering technology anti-interference function, which can effectively remove random interference that is not synchronized with the power supply.
12. The bandpass filter adopts analog and digital hybrid filtering technology, and the bandwidth can be arbitrarily combined to effectively suppress various interferences.
13. Open windows at any phase, single window or double window, and open windows freely within 360 degrees.
14. Monitor the test voltage while detecting partial discharge.
15. Perform discharge measurement, discharge time, and waveform analysis on partial discharge pulses.
16. Display two-dimensional and three-dimensional partial discharge spectra.
17. Store and print partial discharge graphics and data at will, and automatically generate test reports.

1. Measurement channel: independent two channels
2. Capacitance range of testable products: 6pF~250μF.
3. Measurement range: 0.1pC-10000nC.
4. Detection sensitivity: 0.01pC.
5. Sampling accuracy: 12bit; sampling rate: 20M/S.
6. Display working mode:
(1) Display method: ellipse-sine-straight line.
(2) Trigger synchronization mode: divided into internal and external trigger modes, internal trigger is instrument power synchronization trigger, 50Hz; external trigger is synchronous test power supply working frequency, any frequency within 50~400Hz.
(3) External trigger synchronization signal input voltage: 10~200V, input power <1 volt-ampere.
(4) Signal phase determination: The ellipse is displayed in polar coordinates, and the sine is displayed in sine wave mode. The starting point of the display graph is the zero point of the test power supply, and the length of the display graph is one cycle of the test power supply. In the external trigger synchronization mode, the system truly and accurately displays the cycle and phase of the test power supply.
7. Time window: The phase size can be arbitrarily selected, and the display time window can be dynamically enlarged. The two time windows can be opened separately or simultaneously.
8. Filter band: The 3dB low-frequency end frequency fL is divided into 20, 40, 60, and 80kHz grades, OFF (9kHz). The 3dB high-frequency end frequency fH is divided into 100, 200, 300, and 400kHz grades, OFF (1MHz). fL and fH can flexibly and arbitrarily form various filter passbands. Digital filtering: 10kHz~1MHz can be selected arbitrarily.
9. Signal amplifier:
(1) Gain adjustment: divided into coarse gain adjustment and fine gain adjustment. Coarse gain adjustment is divided into 5 levels, the gain difference between levels is 20dB (10 times), and the error is ±1dB; the gain fine adjustment range is >20dB.
(2) Amplifier positive and negative polarity response asymmetry: <1dB.
10. Partial discharge signal measurement: Partial discharge signals can be measured in continuous, amplified and other display working modes, with an error of ±5% (measured on full scale).
11. It has data storage, playback and printing functions, and generates standard test reports.
12. Working environment temperature: -10~45℃, relative humidity: ≤95%.
13. Power supply AC220V; frequency 50Hz; power 100W (using 300W industrial-grade power supply).