Computer controlled voltage breakdown tester

Ddj- 50 kV

skill

technique

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Beijing Guance Jingdian Instrument Equipment Co., Ltd

Product Introduction Catalog

1、 Classification of Electrical Performance Testing Instruments by Guance Company Page 3
2、 Physical picture of voltage breakdown product page 4
3、 Overview and Technical Requirements of Voltage Breakdown Products Page 5-6
4、 Voltage breakdown equipment configuration page 7
5、 Screenshot of Voltage Breakdown Test Electrode Page 8
6、 Voltage breakdown customer case study page 9
7、 Voltage breakdown after-sales service page 10
8、 Characteristics and safety protection of voltage breakdown products page 11
9、 Selection and precautions for voltage breakdown on pages 12-13

Classification of professional electrical performance testing instruments independently developed by Guance Company
Serial number Equipment name Equipment model Test indicators Remarks
1 Voltage breakdown tester DDJ10KV-150KV dielectric strength, leakage current dielectric strength, leakage current
2 Volume Surface Resistance Tester GEST-121 Volume resistivity, surface resistivity Volume resistivity, surface resistivity
3 High frequency dielectric constant tester GCSTD-A dielectric constant and dielectric loss testing frequency 10KHZ-50MHZ
4 High frequency dielectric constant tester GCSTD-B dielectric constant and dielectric loss testing frequency 20KHZ-160MHz
5 Power frequency dielectric constant tester GCSTD-C dielectric constant and dielectric loss testing frequency 50HZ
6 High and Low Frequency Dielectric Constant Tester GCSTD-D Dielectric Constant and Dielectric Loss Test Frequency 20HZ-5MHz
7 Arc Resistance Tester NDH-A Arc Resistance Microcomputer Control, Touch Screen Control
8 High Voltage Leakage Traceability Tester NLD-AI High Voltage Level Test with the highest voltage of 6KV
9 Anti Trace Index Tester NLD-B CTI \ \ PTI maximum high voltage 600V
10 Wire and Cable Tracking Tester NLD-C Leakage Trace and Tracking Touchscreen
11 Conductor resistivity tester GEST-125 Conductor resistivity touch screen
12 Semiconductor resistivity tester GEST-123 Semiconductor resistivity touch screen
13 Carbon Material Resistance Tester GEST-122 Resistance Touch Screen
14 Petroleum Coke Powder Resistance Tester GEST-124 Resistance Touch Screen
15 Loop Resistance Tester HLD-100A Loop Resistance Digital
16 High temperature withstand voltage tester DDJT-10KV-150KV High temperature withstand voltage temperature and voltage range optional
17 Dielectric Temperature Spectral Characteristics Tester GCWP-A Temperature Spectrum, Spectrum Temperature, and Frequency Range Optional

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Product physical image

Voltage breakdown tester - microcomputer control
DDJ-50KV (50000 volts)
Meet the standard: GB/T 1408-2006 Test Method for Electrical Strength of Insulation Materials
GB/T1695-2005 Vulcanized Rubber - Test for Power Frequency Voltage Breakdown Strength and Voltage Endurance Strength
GB/T3333 Test Method for Power Frequency Voltage Breakdown of Cable Paper
HG/T 3330 Determination of breakdown strength of insulation paint film
GB/T 12656 Test Method for Power Frequency Voltage Breakdown of Capacitor Paper
ASTM D149 Test Method for Dielectric Breakdown Voltage and Dielectric Strength of Solid Electrical Insulation Materials at Industrial Power Frequency
1、 Scope of application and functions
Mainly suitable for testing the breakdown strength and voltage resistance of solid insulation materials (such as plastics, rubber, laminates, films, resins, mica, ceramics, glass, insulation paints, and other insulation materials and components) under power frequency voltage or DC voltage.
This instrument is controlled by a computer and is a brand new second-generation dielectric breakdown detection instrument independently developed by our company. The electronic control system of this instrument is controlled by Siemens PLC, and the data acquisition method is optically isolated, effectively solving the anti-interference problem during the test process. The software operation is convenient and can display dynamic curves in real time. At the same time, the boost rate can be infinitely adjusted according to one's own needs, with a range of 10V-5000V/S. It is in a domestic position (the largest manufacturer in China that can achieve this function), making the boost rate truly uniform and accurate, and can accurately measure the data of leakage current. Real time drawing of experimental curves, display of experimental data, accurate judgment, and the ability to save, analyze, and print experimental data.
This system can automatically identify sample breakdown and collect breakdown voltage data and leakage current. At the same time, it can quickly reduce the voltage and automatically reset to zero at the moment of breakdown. The software system is easy to operate, has stable performance, and is safe and reliable.
2、 Software functions:
01. Software platform: WINDOWS window operation platform, intuitive interface, easy to operate
02. Curve display: During the experiment, the test curve can be dynamically displayed
03. Data export: The experimental results can be imported into an EXCEL spreadsheet
04. Experimental report: The report name can be manually set and the experimental report can be printed
05. Test method: Flexible selection of DC and AC tests can be made according to requirements
06. Test method: You can choose breakdown voltage, withstand voltage test, and gradient test according to your needs
07. Parameter setting: Different parameter values can be flexibly set according to different experimental methods and techniques
08. Sample setting: Flexible setting of sample parameters for different standards
09. Personnel management: Set usernames and passwords, and allow different operators to log in for different experiments without affecting each other
10. Standard selection: Contains different standards, can be chosen according to needs
11. Continuous operation: During the continuous operation test, the test can be ended directly in the software and a second test can be conducted
3、 Technical requirements:
01. Input voltage: AC 220V
02. Output voltage: AC 0-50 KV;
DC 0-70 KV
03. Electrical capacity: 5KVA
04. High voltage classification: 0-5KV; 0-10KV; 0--20KV；0--50KV
05. Boosting rate: 10-5000V, which can be manually set within this range. Currently, there are instruments in China that can achieve this function
06. Test method:
DC test: 1. Constant voltage boost 2. Gradient boost 3. Voltage withstand test
Communication test: 1. Constant voltage boost 2. Gradient voltage boost 3. Voltage withstand test
07. There are two ways to stop: 1. Voltage stop 2. Current stop
08. Voltage and current acquisition method: Optoelectronic isolation acquisition, effectively ensuring the safety and reliability of the control system.
09. Test medium: air, test oil
10. Install a highly sensitive overcurrent protection device to ensure that the power is cut off within 0.05 seconds when the sample breaks down.
11. Adopting intelligent integrated circuits for uniform voltage regulation.
12. Support short circuit test requirements in a short period of time.
13. Voltage test accuracy: ≤ 1%.
14. Test voltage continuously adjustable: 0-50 KV.
15. Current can be collected to m*
16. Electrode specifications: meet the requirements of GB/T 1408.1-2006 standard (material is brass)
1. Sheet electrode ￠ 25mm, two sheet electrodes ￠ 75mm each
2. Two enameled wire electrodes
3. Two electrodes are used for the tube
17. Leakage current: Real time collection and recording of the maximum value
18. The instrument is equipped with an automatic anti electricity device, which discharges the high-voltage head after the test is completed to ensure the safety of the experimenters.
19. The electrode is equipped with an electrode bracket to ensure that both the upper and lower electrodes are in the center position, avoiding any impact on the experimental results caused by electrode misalignment.
20. The instrument is equipped with an oil tank, which can serve as an experimental platform and hold experimental oil. There is an electrode bracket placement position in the oil tank, and when conducting tests in oil, it is not necessary to touch the experimental oil by hand to replace the sample; It is convenient and quick to replace the sample.
21. The interior of the casing is equipped with a lighting system and an exhaust system.
22. The high-voltage circuit and control circuit of the instrument are separated, and the strong magnetic field generated by the high-voltage circuit will not interfere with the control circuit, thus ensuring the controllability and stability of the instrument's signal acquisition.
23. The interior floor of the instrument experimental space is made of highly insulated milky white acrylic material, which is used to introduce the discharge into the casing during the experiment.
24. There must be indicator lights at the beginning and end of the experiment
25. The core control components must be Siemens PLC
26. Host size: L/W/H -1120 * 700 * 1400 (MM)
27. Console dimensions: L/W/H -1120 * 700 * 930 (MM)
28. Material of protective cover: Organic glass
29. Oil tank size: length, width, and height -300 * 200 * 150
30. Equipment weight: approximately 100KG
31. Working environment: temperature - room temperature and humidity -<65%
4、 Security protection:
This instrument has relatively complete safety protection measures:
Circuit protection control of this experimental instrument:
(1) Overvoltage protection (2) Overcurrent protection (3) Short circuit protection (4) Leakage protection (5) Software misoperation protection
5、 Experimental method
1. Insulation sample air test
2. Insulation sample immersion test in oil
6、 Experimental interface:
1. Screenshot of the main interface of the experiment

2. Screenshot of parameter settings interface: 3. Screenshot of print preview options:

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7、 Main equipment configuration
Equipment standard configuration
Serial number, name, quantity, manufacturer
1 Lenovo computer 1 Lenovo company
2 HP inkjet printers 1 HP company
3 3KVA transformers and 1 Wugao substation
4 3KVA voltage regulator 1 Huatong Electric
5 Panasonic Stepping Electrodes 1 Panasonic Corporation
6 Siemens PLC control modules from Germany 1 Siemens from Germany
7 Siemens analog acquisition module 1 Siemens Germany
8 Japanese Matsuno Voltage Acquisition Module 1 Matsuno China Company
9 Japanese Matsuno Current Collection Module 1 Matsuno China Company
10 overcurrent protection devices 1 Beijing Crown Test
11 Discharge Rod 1 Beijing Crown Test
12 photoelectric isolation data cable 1 Beijing Guance
13 Control Software 1 Beijing Crown Test
14 Product Qualification Certificate 1 Beijing Crown Test
15 User Manual 1 Beijing Crown Test
16 Test Oil Tank 1 Beijing Crown Test

-Equipped with test electrodes-
Partial electrode screenshot

6MM electrode spherical electrode ball plate electrode wire electrode

25MM-75MM electrode micro electrode

Tube electrode, other electrodes


-Equipped with discharge device-

The device is tested for automatic discharge

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after-sales service
After sales service unit: Beijing Guance Jingdian Instrument Equipment Co., Ltd
After sales content:
1、 Our company dispatches engineers to be responsible for installation, debugging, and training.
2、 The product comes with a one-year free warranty and lifetime maintenance from the date of customer acceptance.
3、 Product system software * upgrade, can add experimental functions according to user's special requirements!
1. Equipment installation and debugging:
Provide free installation and debugging services for the purchased instruments to users. Before installation and debugging, the user should provide corresponding preparation work and give advance notice. The specific installation and debugging date can be negotiated by both parties. The equipment installation and debugging are carried out free of charge by professional engineers with years of experience in the industry. Ensure that users can use the software correctly, operate and maintain it in general, and handle faults promptly.
2. Training:
Our company's engineers provide free operator training to users until the operators are able to operate independently.
3. Equipment acceptance criteria:
The user shall conduct acceptance according to the technical requirements of the order. And it meets the requirements of national standards. The equipment acceptance is carried out by the user, and our company's installation and commissioning technicians and the user jointly sign the maintenance report to confirm the completion of the instrument commissioning work.
4. Equipment maintenance services:
Our company's products come with a one-year free warranty and lifetime maintenance after passing the on-site debugging and acceptance by the user. During the one-year free warranty period, if there are non-human quality problems with the product, our company provides free repairs for customers. If the product malfunctions outside the free warranty period, the repair service will only charge an appropriate material cost fee.
5. :
Provide professional technical solutions according to the requirements of users who require the necessary instruments. In addition to conventional instrument services, our technical department can also provide users with various unconventional equipment.
6. After sales response:
Respond within 2 hours after receiving the user's repair invitation and provide a solution. If the issue is not resolved, our company will assign engineers to promptly arrive at the user's site and resolve the problem until the equipment is used normally.
7. Paid services:
During the warranty period, paid repair services will be provided for the following situations:
(1) Damage caused by human or uncontrollable natural phenomena
(2) Malfunctions or damages caused by improper operation
(3) Damage caused by incorrect installation of the product and repair by others

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DDJ series voltage breakdown tester
Product Features

1. The voltage acquisition of high-voltage equipment requires high requirements for the acquisition system. Our company's voltage breakdown tester control part adopts Siemens PLC control from Germany, which has strong anti-interference ability. It uses optoelectronic isolation data lines and computer communication to ensure the safe operation of the equipment and computer at the moment of breakdown
2. The acquisition rate of Siemens PLC in Germany is 1MS, the breakdown response determination time is 1MS, and the response time is fast.
3. The voltage collection adopts voltage sensors from Matsuno, Japan, which provide accurate, safe and reliable data
4. The current collection adopts Matsuno's current sensor from Japan, which provides accurate data and is safe and reliable
5. There are two ways to stop this device: voltage stop and current stop
6. The boost rate is not graded and can be freely set by the user.

Security protection:
This instrument has multiple protective measures to ensure the personal safety of operators
1. Threshold protection: If the door is not closed, even if the power on point experiment starts and the device has no response, the software will prompt that the safety door is not closed.
2. Voltage zeroing protection: If there is a sudden power outage during the experiment, it will automatically return to zero position after the next power on, ensuring that the initial voltage is at zero position
3. Termination voltage protection: The termination voltage can be set through software to ensure that if there is an abnormal voltage rise during the boosting process, it will automatically terminate and return to zero
4. High voltage mechanical limit: If the software system loses control, the voltage continues to rise and automatically returns to zero after reaching the high voltage limit
5. If the fault is not stopped after breakdown, data is collected through an overcurrent protector to ensure that the voltage automatically returns to zero
6. There is a high voltage indicator light, and by observing the status of the indicator light, it can be determined whether the actual boost is at zero position or not
7. If conducting experiments for a long time, in order to ensure the good operation of the equipment, the equipment should have a transformer exhaust port to ensure the good operation of the transformer and increase its service life
8. If there is any odor or burning or smoking phenomenon in the sample during the experiment, it can be eliminated through the exhaust system.

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Common knowledge and precautions for selecting voltage breakdown tester
1. The difference between dielectric strength and breakdown voltage:
Dielectric strength: It is a measure of the electrical strength of a material when used as an insulator It is defined as the maximum voltage that a sample can withstand per unit thickness when it is broken down, measured in KV/mm or MV/m. The higher the dielectric strength, the better its quality as an insulator Dielectric strength can also be referred to as electrical strength.
Breakdown voltage: It is the maximum voltage value that a material can withstand as an insulator, that is, the maximum voltage value at breakdown failure, measured in KV
2. How to choose a suitable range of voltage breakdown tester:
In the standard requirements for materials or test reports, the withstand voltage level of materials is usually expressed in terms of dielectric strength, that is, KV/mm. The relationship between breakdown voltage and dielectric strength can be expressed by the following formula:
Breakdown voltage value (KV)
Dielectric strength (KV/mm)=------------------------------------------
Sample thickness (mm)
From the above formula, it can be concluded that the selection of a testing instrument with a large range depends on the thickness of the sample, that is:
Breakdown voltage value (KV)=dielectric strength (KV/mm) * sample thickness (mm)
The breakdown voltage value obtained from this formula is the effective voltage value during sample thickness testing. Therefore, after obtaining the breakdown voltage value, it is reasonable to widen the range based on this voltage value. It is recommended to increase the breakdown voltage value by 10KV-20KV after calculating it
3. The difference between voltage breakdown testers with the same voltage range but different power:
A: In testing procedures and standards, the most commonly used test data is the breakdown voltage value. When there is no requirement for the output current of the instrument, the capacity value of the equipment can be ignored, and only the range of the equipment can be focused on, without affecting the test data
B: In some testing standards or requirements, it is necessary to require the instrument to meet the maximum output current. When selecting the instrument range, attention should be paid to the capacity value of the transformer (i.e. power KVA)
C: The relationship between output current, voltage value, and power is represented by the following formula:
Transformer capacity (KVA)
Output current (MA)=----------------------------------------------
Voltage range (KV)
D: The requirements for capacity in GB/T 1408.1-2006 standard are summarized as follows (screenshot):

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4. How to choose suitable test electrodes:
There are many specifications for testing electrodes, and different electrode sizes are selected for different materials and specifications based on the testing standards required for material testing. If there are no special requirements in the standards, the most commonly used testing electrodes for sheet materials are equal diameter and unequal diameter electrodes.
5. What is the difference between conducting voltage breakdown tests in air and oil
A: Test medium air - refers to placing the test sample and electrode in air for withstand voltage and breakdown tests
B. Test medium oil - refers to placing the test sample and electrode * in oil for withstand voltage and breakdown tests, usually using 25 # transformer oil as the test medium
C: Whether conducting experiments in air or oil has no impact on the test data. If there are no special requirements for the tested sample, it is usually assumed that the experiment will be conducted in air. There are two situations where the experiment needs to be conducted in oil: one is that the standard specifies that the experiment must be conducted in oil, and the other is that when conducting experiments in air, if the tested sample experiences creepage or releases electric sparks, resulting in breakdown failure, it must be placed in oil for the experiment
6. The difference between voltage breakdown test methods - constant voltage boost, gradient boost, and withstand voltage test:
The following boost curve can be used to represent it

7. Precautions for installing voltage breakdown tester:
A: Require good grounding at the installation site
B: The air humidity should not be too high
C: Require one socket with a minimum of 16A to be equipped
D: Air switch: not less than 2 for DDJ-50KV and not less than 32A for DDJ-100KV and below