Partial Discharge Tester-扬州达瑞

Partial Discharge Tester

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Product Introduction

Widely applicable for partial discharge measurement of various high-voltage electrical products such as transformers, instrument transformers, high-voltage switches, switchgear, zinc oxide arresters, power cables, product type tests, and insulation operation monitoring. Partial Discharge Detector has high detection sensitivity, wide sample capacitance coverage, broad applicability, complete input units (detection impedance), and multiple frequency band combinations (nine types). After proper calibration, the instrument can directly read the discharge amount of discharge pulses. Both analog and digital meters display simultaneously, and the analog meter can conveniently select logarithmic or linear scale indication as needed.

Technical Specifications:

1. Testable capacitance range: 6pF~250uF 

2. Detection sensitivity and allowable current (see Table 1). 

3. Elliptical scanning time base 

(1) Frequency: 50, 100, 150, 200, 400Hz 

(2) Rotation: 30 degrees per step, rotatable up to 120 degrees. 

(3) Operating mode: Standard - Expanded - Linear. 

(4) Input voltage range for high-frequency elliptical time base: 13~275V. 

4. Display unit 

Uses a 100×80mm rectangular oscilloscope tube with brightness and focus adjustment knobs. 

5. Amplifier 

(1) 3dB low-frequency cutoff fL: 20, 40KHz optional. 

(2) 3dB high-frequency cutoff fH: 200, 300KHz optional. 

(3) Gain adjustment: Coarse 6 steps, gain difference between steps 10 times ±5%. 

(4) Fine adjustment range: >10 times. 

(5) Positive and negative pulse response asymmetry: <5%. 

6. Time window Relay Protection Tester http://www.baishidq..com

(1) Window width: 5°~150° (50Hz) continuously adjustable. 

(2) Window position: Each window can be rotated from 0° to 170°. 

(3) Two time windows can be controlled separately or simultaneously. 

7. Partial discharge meter pulse peak meter 

(1) Linear indication: 0~100 error not greater than 5%. 

(2) Logarithmic indication: 1~100 error not greater than 5%. 

8. Zero marking system to assist in identifying discharge pulse phase. 

9. Power supply: 220V±10%  

Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.