DX8427A AC/DC Corona Aging Test Machine

Experimental analysis of silicone rubber corona aging, research on AC/DC corona aging characteristics, composite insulator material corona aging experimental equipment, organic insulation material corona aging test system, corona aging test box system,

Equipment Overview:

Suitable for scientific research institutions, the developed solid insulation material corona aging resistance testing system can achieve different corona test conditions, and can simultaneously conduct corona aging tests on 5 samples. At the same time, the system can also be used for the voltage resistance test of solid insulation materials against corona discharge; Can conduct systematic experimental research on the corona aging phenomenon of HTV silicone rubber under different conditions. At the same time, the development of this system is expected to provide a standard test platform for domestic research on the corona aging resistance of solid insulation materials, which will help to carry out research on the corona aging resistance characteristics of various solid insulation materials.

Main components: 1) Corona generation device, 2) Measurement system, 3) Protection system, 4) Environmental control and monitoring system. The actual device of the corona aging resistance testing system for solid insulation materials is shown in Figure 1 physical diagram

Equipment reference standards:

Refer to the American ASTM D2275-14 "Standard Test Method for Surface Voltage Resistance of Solid Electrical Insulation Materials to Partial Discharge (Corona)" test standard.

Technical parameters:

(1) Corona generation device:

1. Using YDT-5/50 power frequency corona free test transformer, voltage range: 0-50KV

2. The voltage regulator automatically returns to zero after tripping;

3. Zero position closing, with automatic voltage rise and fall;

4. Imported leakage protector, reliable protection of personal safety;

5. Overcurrent protection, threshold and other safety protection functions;

6. Voltage and current display, measurement accuracy ± 0.2%, breakdown voltage maintained;

7. Experimental electrode: The electrode adopts the traditional needle plate mode to simulate the tip corona discharge in the field. A stainless steel needle electrode with a curvature radius of 0.2mm is used as the upper electrode, and a copper plate electrode is used as the lower electrode with a diameter of 30mm. The entire electrode system consists of 5 sets of needle plate electrodes, as shown in Figure 3 (high-voltage oil immersed capacitors)

8. Electrode spacing: 100mm

9. Number of electrodes: 5

10. The distance between the needle tip electrode and the sample is adjustable, with an adjustable distance of 15mm

11. Rated capacity of high-voltage transformer: 5KVA;

12. Rated input/output voltage: 200V/50KV;

13. Rated input/output current: 20A/0.04A;

14. Control system: Adopting Siemens PLC control

15. Five speed options for boosting: 5V, 50V, 100V, 500V, 1000, 2000V can be set arbitrarily;

16. Equipped with leakage, overload, short circuit, breakdown, and high-voltage protection functions;

17. Instrument components: composed of an electric contact voltage regulator, control box, protective resistor, and electrode box;

18. This device can perform corona aging, voltage breakdown, and withstand voltage tests simultaneously;

19. Voltage breakdown equipped with stainless steel electrodes of grade 25 and grade 75, and a set of high-temperature testing test bench

20. The corona aging test is equipped with 5 sets of needle electrodes, copper plate electrodes, and a set of corona aging sample racks

21. A set of professional testing software

22. A set of branded computers equipped with a printer:

(2) Environmental control devices

1. Temperature sensor: Using Taiwan's P-T-100 high-precision sensor

2. Temperature and Humidity Control Method: Balanced Temperature and Humidity Control Method (BTHC) PID Intelligent Adjustment

3. Temperature range: -10 ℃~150 ℃ can be set

4. Humidity range 20-98% RH

5. Temperature and humidity control accuracy: ± 0.2 ℃; ± 2.5% RH

6. Uniformity inside the temperature and humidity chamber: ± 0.5 ℃~± 0.2 ℃; ± 4.0% RH

7. Controller resolution accuracy: ± 0.01% ℃; ± 1% R.H

8. Heating rate: ≥ 2.5 ° C/min

9. Cooling rate: average 1 ° C/min

10. Temperature deviation: ≤ ± 0.5 ℃ at -10~+99 ℃, ≤ ± 1.0 ℃ at 100~+150 ℃

11. Humidity deviation ± 2.5% RH (>75% RH), ± 4.0% RH (≤ 75% RH)

12. High quality cold-rolled steel plate outer shell material, electrostatic high-temperature baking paint inner box material, stainless steel plate (SUS304)

13. Heat insulation material: high-density polyurethane foam+glass fiber

14. The observation window is a three-layer vacuum glass window

15. Lighting inside the box: Wide angle projection lighting equipment, double-layer doors with sealed doors

16. Space size inside the test box: 500 * 500 * 600mm

17. Insulation treatment shall be applied to the indoor walls of the test room, with a voltage resistance level of 50KV

(3) Dimensions of AC/DC corona aging testing machine:

Corona generation device size: 850 * 740 * 1500mm;

Environmental control device size: 700 * 1100 * 1700mm;

(4) Data acquisition system for AC/DC corona aging testing machine

1. Using Advantech's 16 bit PCI high-precision data acquisition card, the input signal voltage range is ± 5V or ± 10V, and the sampling rate is 3MS/s. Can simultaneously collect multiple corona current and voltage signals, and send the measurement results to the computer for processing.

2. The friendly LabView software interface can display the waveform of corona voltage; It can display the charge amount of positive and negative half cycles of corona discharge current, as well as the trend of discharge energy over time.

3. After the experiment, the test data can be generated into a report and printed or saved.

(5) Main accessories of AC/DC corona aging testing machine

1. 1 corona generator

2. 1 environmental control device

3. One branded computer

4. A set of professional collection software

5. Put in one