Overview
The partial discharge detector is used for type tests of products, insulation operation monitoring, etc.
This instrument features high detection sensitivity, wide capacitance coverage of test samples, broad applicability, complete input units (detection impedances), and multiple frequency band combinations (nine types). After proper calibration, it can directly read the discharge quantity of discharge pulses. Both analog and digital displays are provided simultaneously, and the analog display can be conveniently switched between logarithmic or linear scales as needed. It is a practical partial discharge testing instrument widely used by power departments, manufacturers, and research institutes.
Main Technical Specifications
1. Capacitance range of test samples: 6pF--250μF
2. Detection sensitivity (see Table 1)
3. Amplifier frequency band:
① Low end: 10kHz, 20kHz, 40kHz optional
② High end: 80kHz, 200kHz, 300kHz optional
4. Amplifier gain adjustment: coarse adjustment in six steps, with 20±1db between steps; fine adjustment range >20db
Table 1:
Input Unit No.
|
Tuning Capacitor
|
Unit
|
Sensitivity (pC)
(Asymmetric Circuit)
|
1
|
6-25-100
|
pF
|
0.02
|
2
|
25-100-400
|
pF
|
0.04
|
3
|
100-400-1500
|
pF
|
0.06
|
4
|
400-1500-6000
|
pF
|
0.1
|
5
|
1500-6000-25000
|
pF
|
0.2
|
6
|
6000-25000-100000
|
pF
|
0.5
|
7
|
25000-100000-250000
|
pF
|
1.0
|
8
|
100000-250000-600000
|
pF
|
2.0
|
9
|
250000-600000-1000000
|
pF
|
5.0
|
Note: The capacitance values in the table are the tuning capacitance values for each input unit.
5. Time window: 0°-180°, 0°-360°, and 0°-90° adjustable
6. Test voltage frequency: 50Hz
7. Power supply: AC 220V, 50Hz
8. Dimensions: 500mm × 400mm × 300mm
9. Weight: approximately 20kg
Note: The above specifications are subject to change without prior notice.
