Partial Discharge Meter,

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HZJF-9041D Four Channels Partial Discharge Detector

Overview

The HZJF-9041D four-channel partial discharge detector is a new type of digital partial discharge detection device developed by our company. While retaining all the advantages of the HZJF-9041 model, this product further reduces its size and optimizes its performance. It replaces the traditional oscilloscope and physical knob operation with a 10.1-inch touchscreen, making it more convenient to use.

This instrument features a fully touchscreen operation design, which not only enhances operational durability but also includes the following functions: one‑click automatic calibration, adjustable high‑voltage test divider ratio, and support for uploading test data via serial communication. The device offers high sensitivity, a wide range of applications, a broad dynamic range of the amplification system, multiple frequency band combinations (nine types in total), and strong anti‑interference capability. It is a practical partial discharge detection instrument widely used by power departments, manufacturing enterprises, and research institutions.

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

Our company will rely on equipment innovation and technological progress to continuously improve the technical quality of employees to ensure that enterprises provide customers with better Partial Discharge Meter,. We will continue to work hard, with good products and more powerful measures to continue to serve our customers and to achieve win-win situation. We analyze the needs of individual users and understand changes and growth trends in user needs, knowing our customers better.

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