NRJF Series Partial Discharge Detector

NRJF Series Partial Discharge Detector

Classification: Partical Discharge/AC DC hipot test set

Reference standard: DL/T 417-2006

Verification:  View the certificate

Instructions:  DOC Instructions

  PDF Instructions

Tel: 027-87207771 87207772 87207773 87188862

Verification certificate
Product introduction

NRJF series partial discharge detector is a newly developed and produced partial discharge detector in recent year. Widely used in transformers, transducer, high-voltage switch, zinc oxide arrester, power cables and other high-voltage electrical products, to measure partial discharge, test product’s type, and isolation monitoring insulation operational oversight  of partial discharge measurements, product type testing, insulation. NRJF series  partial discharge detector is widely used in electricity sectors, manufacturers, research institutes and other units.

Alternative name
Partial discharge tester, partial discharge testing device, partial discharge detector, partial discharge detecting system.
The Characteristics of the products
NRJF-H Partial Discharge Detector
Product characteristics

1.High measuring sensitivity 
2.Wide range of capacitance
3.Being well equipped for input unit impedance detecting and more variants of frequency bands ( 9 groups of frequency bands).
4.After proper setting, the discharge impulse amount can be read directly.
5.The indicating and digital meters are shown simultaneously.
6.
Adopt color LCD display graphics, compared with the traditional CRT, it has stronger waveform locking function, which is more conducive to observation and analysis graphics.

NRJFD-3000 Digital Partial Discharge Detector
Product characteristics

1, Pure process control mode for partial discharge detecting system

2, English menu display

3, Automatic calibration, automatic synchronization, automatic voltage recording, automatically measuring and playback & saved

4, Automatic generating test report

5, 2D and 3D partial discharge display

6, Adopting digital window technology, with strong anti-interference.

7, Dual-channel measurement and differential digital technology, which can measure the partial discharge signals of two sample or a sample with two points, can easily analyze the source of partial discharge signal .

NRJFD-4000 Partial Discharge Test System
Product characteristics

1、4 channel independent high-speed sampling technology, to achieve 4 channels of uninterrupted non lost cycle sampling, the uncertainty of the index is better than the range of 3%, to ensure the integrity of the detection signal.
2、Large dynamic automatic calibration and measurement range is 0.1 ~ 100000pC.
3、Independent dynamic digital filter FIR function, significantly improve the anti-interference level.
4、Full automatic calibration, automatic power supply, automatic voltage measurement, automatic recording function, combined with automatic infinite wave record and storage function, can store and playback waveform at any time.
5、Adopt ellipse, straight line, sine and dot matrix multiple display mode, a variety of statistical analysis graph (N - Q - Φ, Q - T - Φ, N - Φ, Q - Φ 3D, 2D map) synchronization displayed on the screen, analysis and diagnosis is more effective and efficient.
6、The software system based on Windows platform, make the operation more convenient and the function is more powerful, unified button to restore function, to ensure stable operation of instrument.
7、Imported double aluminum magnesium alloy case, portable integrated design, strong and lightweight. The weight is less than 20 kg.

The parameters of the products
NRJF-H Partial Discharge Detector
Usage
condition
Environment temperature 0℃~40℃±2℃
Relative humidity 80% or less
Power supply 220V±22V,50Hz
Grounding requirements Grounding resistance<1Ω

No severe vibration and mechanical shocking;The air is not composed of Air does not contain the dust and other mixture which enough to corrode the instrument;Should not be affected by strong electromagnetic interference;Good ventilation conditions。

Tested product capacity 6PF~250μF
Frequency band of amplify ①Low:10kHz、20kHz、40kHz optional
②Upper:80kHz、200kHz、300kHz optional
Amplifier gain adjustment Coarse turning with 6 gears,gain between the gear:20 ± 1db; fine turning range > 20db
Time Window The display of time window colors yellow
Window width Adjustable range 5°~150°
Window position Each window can be rotated 0°~170°
Two time window display Two time windows can be opened separately or simultaneously
Discharge Scale Digital Meter A 3 ½ LED digital meter display 0-100.0 error<±5%(at full scale meter)
Oval Time Base frequency 50Hz frequency and arbitrary frequency
Ellipse Rotation to 30°for a gear, can be used for 180°rotation
Display Oval - straight line
Ellipse is displayed color blue
High-frequency ellipse input voltage <220V,and the uptake power<1VA
Testing voltage meter Range 100kV(can expand)
Display 3½ digit voltmeter indication
Accuracy superior to ±5%(in full scale)
Waveform Locked You can lock any time desired waveform observation and analysis for your convenience
Other Inside and outside with zero mark function
Dimension 450mm×450mm×190mm(W * D * H )
Weight about 15kg
Detection sensitivity
Input unit number
Turnable capacity
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 μF 0.3
7 0.025-0.1-0.4 μF 0.5
8 0.1-0.4-1.5 μF 1
9 0.4-1.5-6.0 μF 1.5
10 1.5-6.0-25 μF 2.5
11 6.0-25-60 μF 5
12 25-60-250 μF 10
13 Resistance
0.5


NRJFD-3000 Digital Partial Discharge Test System
Measuring channel A,B 2 channels (Can sample the discharge signal at the same time)
Detection sensitivity
0.1pC
Measuring bandwidth
3dB bandwidth,10kHz ~ 300kHz
Programmable filter setting grade Low side 10,20,40kHz
High side 100,200,300kHz
Gain dynamic range
120dB
Sampling speed
0.1μs/point per channel
Sampling accuracy
8 Bit ± 1/2 LSB
Test voltage frequency
30,100,150,200,250Hz or other arbitrary Hz
Calibration pulse generator
NRJF-301
Calibration impulse voltage
10V,5V,2V,1V,0.5V,0.2V:six grades available
Calibration capacitor
50pF,200pF :two grades available
Calibration pulse voltage rise time
<60ns、impulse width>20μs
Calibration pulse voltage fall time
>100μs
Calibration pulse angle adjustable range
0~360degree
Display of PD peak
0~10000pC
Working power
AC 220V±10%,50Hz、power<100VA、fuse:0.5A

NRJFD-4000 Partial Discharge Test System
Operating temperature
-20℃~45℃
Power supply
0~220V(1±10%)    50Hz(1±3%)
Detection sensitivity
< 0.1 pC
Measuring channel
2 channels
Sampling rate
20MHz/per channel
Sampling accuracy
12Bit
Measuring signal frequency range
0.1pC~1000nC
Host system
Windows XP
Bandwidth choice Low side: 10、20,30,80kHz(OFF)High side:100,200,300 ,1M(OFF)Hz several grades can be adjustable, error is less than ±5%
Gain grade
5 grades
The Linearity error of apparent charge
±5%
The apparent charge to the positive and negative pulse corresponding asymmetry error
±5%
Range shift error of apparent charge
±5%
The corresponding error of the low repetition rate pulse in the charge
±5%
Synchronous function
Automatic and synchronous function,can be synchronized with any frequency
Window function
An arbitrary phase window,the window can be opened symmetric,positive windows,anti-windows
Measurement mode
Calibration,measurement,graphics analysis,etc.
Calibration mode
Calibration,storage,measurement model with multiple parameters
Tune capacitance range of detection impedance
25pf~6000pf
Output range of calibration pulse generator
10pC~2000pC
Pulse resolution time of standard pulse generator
< 100nS
Data storage
Hard disk, USB, and all XP Windows supported storage devices
The earth terminal of host
> 10mm2
Appearance
Measurement and display integration
Test impedance Each impedance is marked with its maximum allowable operating current, and the impedance can be continuously worked for 1 hours without any damage. Each impedance has a voltage protection device, which can withstand lightning impulse voltage 100V without damage.

The main parameters of calibration pulse

The grade of output charge 10 PC、25pC、50PC、100pC、200pC、250pC、400pC、500PC、1000pC、2000pC
The output voltage of calibration pulse
Six grades can be adjustable:0.2V、0.5V、1V、2V、5V、10V
Test capacitance
5 grades can be adjustable: 50pF, 200pF
Calibration pulse voltage rise time
<60ns
Calibration pulse voltage fall time
>100μs
Output impedance
<100Ω
Nonlinear Error
<5%

Calibrate impedance Separate 12-detecting impedance of technical parameters


Tuning capacitance
Flow capacity limit

The minimum value
Intermediate values
The maximum value
Limited value
1
6pF
25pF
100pF
30mA
2
25pF
100pF
400pF
60mA
3
100pF
400pF
1500pF
120mA
4
400pF
1500pF
6000pF
250mA
5
1500pF
6000pF
25nF
500mA
6
6000pF
25nF
100nF
1A
7
25nF
100nF
400nF
2A
8
100nF
400nF
1.5μF
4A
9
400nF
1.5μF
6.0μF
8A
10
1.5μF
5.0μF
25μF
15A
11
6.0μF
15μF
60μF
25A
12
15μF
60μF
250μF
50A


Power supply: AC110V/115V/120V/127V/220V/230V/240V optional
Input frequency: 50Hz/60Hz optional
Note: The users can select the corresponding power which based on their local supply voltage and frequency, and we will confirm it before the delivery (or inform us that the goods will be used in which country advance)

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