I.Overview

HZJF-9041D partial discharge detector， It uses 10.1 inch touch screen to replace the traditional operation mode of oscillograph and physical knob, making it more convenient to use.

The instrument adopts full touch screen operation, which not only improves the service life of the operation, but also has the following functions: one key automatic correction; high voltage test voltage divider ratio can be set; serial communication upload test data. The instrument has the characteristics of high sensitivity, wide application range, wide dynamic range of amplification system, multiple frequency band combinations (nine kinds), and strong anti-interference ability. It is a practical partial discharge testing instrument widely used by electric power departments, manufacturers and scientific research institutes.

II.Main Technical Indicators

1. The equivalent capacitance ranges from 6pF to 250 μ F

2. Number of channels: Four channels

3. Measurement range: 0.1pc-10000nc

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

Table 1. Detection sensitivity and allowable current value of input unit

5. Elliptic scan time base

(1) Frequency 50/60, 100, 150, 200, 400Hz

(2) Rotation: 30 ° as the first gear, and can rotate 120 °

(3) Working method: ellipse sine wave straight line

6. Display unit

10.1 inch capacitive touch screen is used.

7. Amplifier

(1) 3dB low frequency fl:10, 20, 40KHz optional

(2) 3dB high frequency fh:80, 200, 300kHz optional

(3) Gain adjustment, rough adjustment 6, inter gear gain difference 20 ± 1dB, fine adjustment range >20db

(4) Asymmetry of positive and negative pulse response ＜ 1dB

8. Time window

(1) Window width: adjustable, 5 ° ~ 170 ° at 50Hz

(2) Window position: each window can rotate 0 ° ~ 170 °

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

9. Peak pulse display

The touch screen displays 1 decimal place (10pc or more), 2 decimal places (less than 10pc), error: ± 3% (in full scale)

10. Test voltage display

(1) Range 150kV

(2) Input impedance: >1m Ω

(3) Display: touch screen display, display 1 decimal place

(4) Error: ± 1%

11. Test frequency display

Error: less than ± 1%

12. Zero standard system

Zero sign is consistent with all ellipse scanning frequencies

13. Structure

(1) Dimensions: 370mm (width), 460mm (depth), 215mm (height)

(2) Weight: about 12.5kg