NRJF Series Digital Partial Discharge Test System

The partial discharge test system can meet the AC withstand voltage test DC high voltage test and partial discharge test of high voltage transformer switch cable lighting arrester and other high-voltage electrical products. It is an ideal partial discharge test equipment for power equipment manufacturers high voltage test departments and electric power maintenance and installation unit.
The PD test system is composed with digital partial discharge detector PD Free test transformer power console PD Free isolation transformer PD Free coupling capacitor PD Free protective resistor and DC high voltage divider.

Technical characteristics
Number of channels	2 electrical signal interfaces one external synchronization interface
Sampling accuracy	12bit
Range switching	60Db 50dB 40dB 30dB 20dB 10dB 0dB -10dB total 8 ranges
Frequency range	80k-200kHz 40k-300kHz
Nonlinear error of the range	5%
Measuring range	0.1pC~100000pC
Sensitivity	0.1pC
Capacitance range of the products to be tested	6pF~250µF
Test power frequency range	50~400Hz
Display
Display	7” TFT true color touch LCD
Resolution	800×480
Storage
Physical storage	256MB DDR2 for running memory
SD card storage	Standard 16G card can be upgraded to 32G used to store test records and test data
Interface
RS232	RS232 used for synchronous transmission interface with PC
USB	It can be connected to an external mouse and keyboard as well as an external mobile storage device
Power mode	AC 220V
Electrical signal interface	2-way BNC interface for signal input
SMA interface	External synchronization interface
SD card slot	can insert SD card up to 32G
Network port:	Can be expandable
Grounding button	For external grounding
General description
CPU	Main frequency 533MHz
System	WINCE6.0
Operation temperature	-20℃ - 45℃
Storage temperature	-20℃ - 60℃
Dimension	350mm (L)× 245mm (W)× 175mm (H)
Weight	5.8kg

Technical data sheet for independent input unit

Input unit serial number	Turning capacitance Ct´	Sensitivity Unbalanced input	Maximum current (RMS)
Input unit serial number	Turning capacitance Ct´	Sensitivity Unbalanced input	Unbalanced input	Balance d input
1	6pF-25pF-100pF	0.01pc	30mA	0.25A
2	25pF-100pF-400pF	0.02pc	60mA	0.5A
3	100pF-400pF-1500pF	0.04pc	120mA	1A
4	400pF-1500pF-6000pF	0.08pc	250mA	2A
5	1500pF-6000pF-0.025mF	0.15pc	0.5A	4A
6	6000pF-0.025mF-0.10mF	0.3pc	1A	8A
7	0.025mF-0.10mF-0.4mF	0.5pc	2A	15A
8	0.10mF-0.4mF-1.5mF	1.0pc	4A	30A
9	0.4mF-1.5mF-6.0mF	1.5pc	8A	60A
10	1.5mF-6.0mF-25mF	2.5pc	15A	120A
11	4.0mF-15mF-60mF	5.0pc	25A	200A
12	15mF-60mF-250mF	10pc	50A	300A