HZJF-9041D Fourchannels Partial Discharge Test System
Structure Description
The instrument is a desktop standard cabinet structure. The operation surface of the instrument is divided into two parts: front panel and back panel. The positions of each component are shown in Fig. 2a and 2b
Figure 2a HZJF-9041DSchematic diagram of front panel of partial discharge detector
Figure 2b HZJF-9041DSchematic diagram of back panel of partial discharge detector
HZJF-9041D Description Of Front Panel And Rear Panel Components
1. Touch screen: display the measured PD waveform, PD, test voltage, test frequency and other parameters;
2. Power switch button: press once to turn on; press again to turn off;
3. Partial discharge input: partial discharge measurement signal input, HZJF-9041D has four channels, the signal can be accessed from any channel;
4. High voltage voltage divider, voltage range: 150V;
5. Grounding bolt: reliable grounding is required during test;
6. RS232 port: through this serial port, the parameters of partial discharge instrument can be uploaded to other equipment;
7. External power supply input;
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)
|
NO. |
Tuning Capacitance Range |
Sensitivity (PC) (Unbalanced Circuit) |
Effective Value Of Allowable Current |
|
|
Unbalanced Circuit |
Balance Circuit |
|||
|
1 |
0～25～100pF |
0.02 |
30mA |
0.25A |
|
2 |
25～100～400pF |
0.04 |
50mA |
0.5A |
|
3 |
100～400～1500pF |
0.06 |
120mA |
1A |
|
4 |
400～1500～6000pF |
0.1 |
0.25A |
2A |
|
5 |
1500～6000～25000pF |
0.2 |
0.5A |
4A |
|
6 |
0.006～0.025～0.1μF |
0.3 |
1A |
8A |
|
7 |
0.025～0.1～0.4μF |
0.5 |
2A |
15A |
|
8 |
0.1～0.4～1.5μF |
1 |
4A |
30A |
|
9 |
0.4～1.5～6.0μF |
1.5 |
8A |
60A |
|
10 |
1.5～6.0～25μF |
2.5 |
15A |
120A |
|
11 |
6.0～25～60μF |
5 |
25A |
200A |
|
12 |
25～60～250μF |
10 |
50A |
300A |
|
7R |
Resistance |
0.5 |
2A |
15A |
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