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HYJF-2000 Dual channel digital PD detector
Dual channel digital PD detector is applied to the PD detecting and online monitoring for transformers, CT/PT, generators, lightning arrester,bushing, GIS, capacitor, power cable, circuit breaker and other HV electric equipment with variable voltage levels and capacitance.
Introduction

Dual channel digital PD detector is applied to the PD detecting and online monitoring for transformers, CT/PT, generators, lightning arrester, bushing, GIS, capacitor, power cable, circuit breaker and other HV electric equipment with variable voltage levels and capacitance.

1. display screen, high-light 15inch color TFT LCD display screen,
display resolution: 1024×768; 4-digit digital tube displays the voltage.
2. External port: USB port, power port, 2-way signal input, ground
terminal; External synchronization signal input terminal;RJ45 port,
RS232 port.
3. Dimension: L 540*W460*H320MM.
4. Weight: 18kg

Features
1.Independent two channel digital pd measurement, synchronous sampling, processing and display;
2. Internal and external synchronization optional, with zero - mark indication and phase resolution function;
3. Display mode: select ellipse, line and sine freely;
4. Single discharge pulse waveform analysis to determine the discharge characteristics;
5. Keep test data and waveform at any time, and re-display and analyze the test records saved in the past;
6. Gain range: each channel can be adjusted independently, and the waveform display can be smoothly adjusted at any time without affecting the measurement results.
7. Special or random waveforms can be captured and analyzed in detail;
8. Anti-static interference function, can remove the phase fixed interference signal;

9. The anti-interference function of related filtering technology can effectively remove the random interference that is out of sync with the power supply.

10. The bandpass filter adopts the technology of analog and digital mixed

filtering, the bandwidth can be combined arbitrarily, and all kinds of interference can be effectively suppressed;
11. Open Windows at any phase, single or double Windows at any option, open Windows at any option within 360 degrees;
12. The test voltage can be monitored while partial discharge is detected;
13. Discharge measurement, discharge time and waveform analysis of partial discharge pulse are carried out
14. 2 D and 3 D pd spectra were displayed;
15. Randomly store and print pd graphs and data, automatically generate test report.
Parameters
1.test channel: separate 2 channels
2. the capacitance range of tested sample: 6pF~250μF
3.test sensitivity:0.1pC.
4. sampling accuracy: 12bit,sample speed: 20m/s
5. display working way:
(1) display: oval-sine-line
(2) Trigger synchronization mode: Separate internal and external trigger mode; Internal trigger is the synchronous trigger of instrument power supply,50Hz; The external trigger is the working frequency of the synchronous test power supply, any frequency within 50-400Hz.
(3) External trigger synchronous signal input voltage: 10 ~ 200V,input power<1VA
(4) Signal phase determination: oval display is shown as pole coordinates mode. Sine display is shown as sine wave mode. The starting point of the display graph is the zero of the test power supply, the length of its display graph is one cycle of the test power supply. The system shows the cycle and phase of test power supply truly and accurately.
6. time window: The phase size is arbitrary. The display time window can be dynamically enlarged. Time Windows can be opened separately or simultaneously.
7. Filter frequency: 3dB low-frequency fLhas 10/20/40kHz gears, 3dB high-frequency fH has 80/200/300kHz gears, fL and fH can be composed of various filter pass bands flexibly.
8. Signal-amplifier:
(1) Adjustment:Divide gain coarse and gain fine adjustment,gain coarse adjustment has 6 gears,20dB(10times)difference between each gear,error±1dB; gain fine adjustment >20dB.
(2) The positive and negative polarity response of the amplifier is asymmetric:<1dB.
9.PD signal test: can test PD signal in continuous and enlarged display working mode, error ±5% (based on full range)
10. It has the function of data storage, playback and printing to generate standard test report.
11. working condition:-10~45℃,relative humidity:≤95%。
12. power supply AC220V;frequency 50Hz;power 300W.
Accessory
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