GDJF-2008 Partial Discharge Analyzer
GDJF-2008 Partial Discharge Detector is measuring partial discharge for the products such as transformers, mutual inductors, HV switches, zinc monoxide arresters and power cables. It also can make type tests and monitor insulation operation.
This type has the advantages of high sensitivity, wide range of capacitance, being well equipped for input unit impedance detecting and more variants of frequency bands (9 in all). After proper setting, the discharge impulse amount can be read directly. The indicating and digital meters are shown simultaneously.
This detector is widely applied in power stations, manufacturers, and institutions.
● Ambient temperature: 0-40℃±2℃.
● Relative humidity: ≤80%
● Power supply: 220V±10%, 50HZ.
● No violent vibration and mechanical shock.
● The device should be placed in the environment with no dust and corrosive, good ventilation. It should not be interfered by strong electromagnetic.
● Earthing requirements: earthing resistance ＜1Ω.
● Capacitance range to be tested 6PF-250μF.
● Testing sensitivity (shown in Table.1).
|
Input unit?No. |
Tuning capacitance |
Unit |
Sensitivity(pC)?(Unsymmetrical 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 |
0.006-0.025-0.1 |
mF |
0.3 |
|
7 |
0.025-0.1-0.4 |
mF |
0.5 |
|
8 |
0.1-0.4-1.5 |
mF |
1 |
|
9 |
0.4-1.5-6.0 |
mF |
1.5 |
|
10 |
1.5-6.0-25 |
mF |
2.5 |
|
11 |
6.0-25-60 |
mF |
5 |
|
12 |
25-60-250 |
mF |
10 |
|
7R |
Resistance |
? |
0.5 |
● Amplifier band
Low terminal: 10KHZ, 20 KHZ, 40 KHZ (optional)
High terminal: 80 KHZ, 200 KHZ, 300 KHZ (optional)
● Amplifier gain adjustment
Coarse control – there are 6 gears for coarse tuning, the gain of each gear is 20±1db
Fine control ≥ 20 db
● Time windows
Width of window, adjustable 15o—150o
Window position, adjustable 0o—170o
Two windows can be opened simultaneously or separately.
● Discharge meter
Digital display
PD display: LED 3? digits
0-100.0 limit of error <±3% (full scale)
● Ellipse time base
Frequency: 50Hz and arbitrary frequency
Elliptic display color is yellow
Elliptic rotation: each gear is 30°, 180 ° rotation can be made.
Display: ellipse – straight line
High frequency time base elliptical input voltage less than 220 V, intake power < 1 VA
● Waveform lock
Lock required waveform of any time to facilitate observation and analysis
● Testing Voltage meter
Range: 100KV (Can be expanded)
Display 31/2 digital voltage meter
Accuracy: better than ±2% (full scale)
● Inside, outside the zero-mark function
● Dimensions: 450×450×190 mm
● Weight: about 16kg
