Система испытания на частичный разряд NRJF 50

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NRJF-H 50kV Simulated Partial Discharge Test System

 

Product Introduction

NRJF-H 50kV Simulated Partial Discharge Test System is widely used to test the partial discharge of transformers, mutual inductors, high-voltage switch, zinc oxide arrester, power cables and other high-voltage electrical products, it also can make type tests and monitor insulation operation. It consists of Simulated partial discharge tester, 5kVA/50kV No PD test transformer, NRCX-5kVA seres Power control box,  50kV No PD coupling capacitor, 5kVA No PD isolation transformer and 50kV No PD protective resistor.

Product features

 

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. Combined with LCD display graphics and pointer meter, compared with the traditional CRT, it has stronger waveform locking function, which is more conducive to observation and analysis graphics.

 

Technical specification

 

 1. NRJF-H Partial discharge detector

1.1 Main technical parameters:

 1.2 Detection sensitivity ( see below table ) :

 

Input unit number	Turning 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	pF	0.3
7	0.025-0.1-0.4	pF	0.5
8	0.1-0.4-1.5	pF	1
9	0.4-1.5-6.0	pF	1.5
10	1.5-6.0-25	pF	2.5
11	6.0-25-60	pF	5
12	25-60-250	pF	10
7R	Resistance		0.5

 

2. No PD test transformer

(1) Rated power: 5kVA

(2) Input voltage: 220V, 50Hz

(3) Output voltage: 0 ~ 50kV can be adjustable.

(4) The frequency of output voltage: 50Hz

(5) Phase: single phase

(6) Impedance voltage 4 ~ 10%

(7) No-load current of transformer: 4 ~ 9%

3. Power control box for testing transformer

(1) Ambient temperature: 0 ~ 40℃
(2) Relative humidity : < 85%
(3) Altitude: < 2000M
(4) Power supply: 220V 50Hz
(5) Capacity: 5kVA

4. Coupling capacitor

(1) Capacitance: 1000pF;
(2) Voltage: 50kV;
(3) Partial discharge: ≤5PC (under the rated voltage);
(4) Used for partial discharge measurement for electric power equipment under power frequency voltage;
(5) Measuring 30 ~ 300Hz of AC voltage, it used as Coupling Capacitance during No partial discharge test.

5. Isolation transformer

(1) Operation frequency: 50Hz;
(2) Rated capacity: 5kVA;
(3) Input voltage: 220V
(4) Output current: 22A
(5) Output voltage: 220V
(6) Weight: 26kg
(7) Dimension: 280mm×280mm×300mm
(8) Attenuation effect: 10KHZ - 100KHZ ≥ 20db
100KHZ - 30MKZ ≥ 60db

6 Protective resistance

(1) Rated frequency: 50Hz

(2) Rated voltage: 50kV

(3) Rated current: 100mA

(4) Normal resistance: 8.3kΩ