Jf-2002 Partial Discharge Detector

Main specification
 
1 Capacitance range of measured piece 6pF~250uF2 Measuring sensitivity and Max. current(see table 1)
 
Table 1,
 
3 Time base of ellipse scan
(1)  Frequency 50 /60(inner), 100, 150, 200, 400Hz
(2)  Turn: 30º per grade, total 360º
(3)  display ways: ellipse--expand--beeline
(4)  The high frequency time base ellipse can be adjusted to normal state by input voltage (10-250V), and the power is less than 1 VA. Auto-protecting function when overload
 
4 Displaying Unit
A rectangle oscillograph tube (124×104mm²), which has brightness and focus knobs.
 
5 Amplifier
(1) On low frequency 3dB, fL: 10, 20, 40 kHz optional
(2) On high frequency 3dB, fH: 80, 200, 300 kHz optional
(3) Gain adjusting: 6 grades of gross adjustment. Gain difference between grades is 20±1dB, fine adjusting range >20dB
(4) Asymmetry of plus and minus pulse responding < 1dB
 
6 Time window
(1) Adjustable window width, 15º~150º on 50/60Hz
(2) Rotatable window position, 0º~170º
(3)Two windows can on/off respectively or simultaneously
 
7 Pulse peak meter
(1) Pointer meter with linear graduation. 0-100 deviation ±5% (with full graduation)
(2) Pointer meter with logarithm graduation. 0-10-100 deviation ±5% (with full graduation)
(3) Digital meter with 3.5 bits LED digital display, 0-100 deviation ±3% (with full graduation)
 
8 Measuring voltmeter
Measure range 100kV (with 100kV voltmeter resistance R)
Display: 3.5 bits LED digital.
Deviation: ±3%
 
9 Zero mark system
(1) Made by inner zero mark generator, it can change polarity and rotate 0-180º,
so it can correspond with the true zero mark, which is made by high voltage resistor.
(2) The zero mark is corresponded with all ellipse scan frequency.
 
10 Structure
(1) Dimension: 530×550×220(mm)
(2) Weight: 22kg