Mainly applicable to solid insulating materials such as: wire casing, resin and adhesive, impregnated fiber products, mica and its products, plastic films, ceramics, glass, insulating varnish, vulcanized rubber, cable paper, insulating paint film, hard rubber, cardboard and other insulating media in air or liquid media, measuring the breakdown strength and withstand voltage time under power frequency (48~62Hz) or corresponding DC voltage. Suitable for continuous uniform voltage rise or step-by-step voltage rise, applying AC/DC voltage to the sample until breakdown, measuring the breakdown voltage value, and calculating the breakdown strength of the sample; using the rapid voltage rise method, raising the voltage to a specified value, maintaining it for a certain time without the sample breaking down, and defining this specified value as the withstand voltage value of the sample.
III. Basic Functions:
Controlled by computer, data acquisition is through photoelectric isolation, effectively solving the anti-interference problem during the test process. The software operation is convenient, can display dynamic curves in real time, and the voltage rise rate is steplessly adjustable. The voltage rise rate can be adjusted according to your own needs, with an adjustment range of 0.1KV-3KV/S, making the voltage rise rate truly uniform and accurate, and can accurately measure the leakage current data. It can draw test curves in real time, display test data, judge accurately, and can save, analyze, and print test data. It can also automatically judge sample breakdown and collect breakdown voltage data and leakage current, and at the same time, the voltage can quickly drop to zero automatically at the moment of breakdown. The software system is easy to operate, stable in performance, safe and reliable.
IV. Structural Features:
Adopting a vertical box structure, greatly saving laboratory floor space. The feet adopt a pulley structure for easy movement and placement, avoiding the disadvantages of horizontal equipment produced by similar manufacturers, such as the need for an additional installation table, large floor space, and inconvenient movement. This product uses a DC servo motor with a reduction mechanism to ensure the latest requirements for extremely slow and extremely fast tests in the latest standards, ensuring users can freely choose the voltage rise rate.
V. Main Technical Requirements:
1. Equipment input voltage: AC 100KV (compatible with ordinary laboratory power supplies);
2. Test voltage mode: AC 0--100 KV;
DC 0--100 KV;
3. Electrical capacity: 10KVA;
4. Test method: 0-100KV full range adjustable (using high-precision voltage sampling components);
5. Breakdown and withstand voltage test voltage rise rate:
0.1 KV/S
0.2 KV/S
0.5 KV/S
1.5 KV/S
2.0 KV/S
2.5 KV/S
3.0 KV/S (this item meets the extremely fast voltage rise test requirements in the latest standards);
6. Test modes:
DC test: 1. Uniform voltage rise 2. Step voltage rise 3. Withstand voltage test
AC test: 1. Uniform voltage rise 2. Step voltage rise 3. Withstand voltage test
Note: According to standards of different industries, we can customize special test functions required by your industry standards according to user requirements.
7. The overcurrent protection device should have sufficient sensitivity to ensure that the power is cut off within 0.1S when the sample breaks down.
8. Leakage current selection: 1—100 mA can be freely set by computer software.
9. This instrument adopts advanced contactless components for uniform voltage regulation (eliminating the mechanical transmission voltage rise method in obsolete products).
10. Supports short-circuit test requirements within a short time.
11. One test can test 5 samples simultaneously.
12. Voltage measurement error: ≤2％.
13. Test voltage continuously adjustable: 0-100 KV
14. Withstand voltage time setting: 0-6 hours (can be continuously set through software).
15. Host dimensions: 1500mm*1200mm*1600mm (length width height).
16. Host weight: about 200KG.
17. Nine-level safety protection measures:
(1) Overvoltage protection
(2) Test overcurrent protection
(3) Test short-circuit protection
(4) Safety door opening protection
(5) Software misoperation protection
(6) Zero voltage reset protection
(7) Discharge protection after test end
(8) Independent protective grounding
(9) Electromagnetic discharge after test completion
VI. Test Modes:
1. Breakdown, withstand voltage test or step test of insulating samples in air;
2. Breakdown, withstand voltage test or step test of insulating samples immersed in oil;
Note: Other test modes can be customized according to user requirements.
VII. Test Software:
1. The test software is the latest developed by our company, with powerful functions, simple operation, and intuitive display;
2. Using computer control through man-machine dialogue, complete the power frequency voltage breakdown and power frequency withstand voltage test of insulating media;
3. During the test, the instrument can draw real-time curves of the voltage rise breakdown process. The voltage rise curves of each test are composed of different colors. After the test, the repeatability of the material test data can be compared by overlaying;
4. Can retrieve current and historical test data at any time for viewing, editing, and modifying parameters;
5. During the test, test conditions and storage paths can be modified at any time, and test results can be automatically stored;
6. During the test, you can decide at any time whether this test is valid through software, facilitating the screening of test results;
7. Operation passwords can be set to ensure dedicated machine and dedicated personnel operation, avoiding misoperation by unrelated personnel;
8. The test report format is flexible and changeable, suitable for different needs of different users;
9. The validity of curve data in a group of tests can be manually selected;
10. Test result data can be imported into EXCEL, WORD documents for editing;
11. The overcurrent protection device has sufficient sensitivity to ensure that the power is cut off within 0.1S when the sample breaks down;
12. Durability of instrument operation: The instrument can run continuously without regular shutdown to protect the instrument;
VIII. Software Instructions:
1. Test unit: the name of the unit conducting material testing;
2. Submitting unit: the name of the unit submitting materials for testing;
3. Test mode: select "AC test" or "DC test";
ZJC-50KV Plastic Voltage Breakdown Tester
I. Main Uses and Functions
The ZJC-50KV plastic voltage breakdown tester meets the requirements of GB1408.1-2006 GB1408.2-2006 GB/T1695-2005 GB/T3333 GB12656 and ASTM D149 ASTM D 876, DIN53481, UNI4291IEC
standards. Mainly applicable to solid insulating materials such as: plastics, films, resins, mica, ceramics, glass, insulating varnish and other media for testing breakdown strength and withstand voltage time under power frequency voltage or DC voltage; the instrument is computer-controlled, can quickly and accurately collect, process various data during the test, and can store, display, and print.
This instrument has anti-radiation function. The test door is made of transparent insulating glass with a shielding mesh in the middle. During the test, a large current will be generated at the moment of breakdown, which also has radiation hazards to the human body. Our company's instrument has been shielded to minimize harm to the human body.
This instrument also has a lighting function, because during the test, the light may be dim. This function can be used to make the observation during the test more obvious and provide better test results.
II. Equipment Composition Principle and Safety Protection:
1. The equipment mainly consists of high-voltage test transformer, contact voltage regulator, servo speed control system, acquisition system, control system, automatic discharge, etc.
2. The input of the test transformer is given by the output of the voltage regulator, and the acquisition system collects the high-voltage output in real time. The computer adjusts the speed control system that controls the rotation of the voltage regulator based on the voltage, forming a closed loop, making the voltage regulation process smoother. It can also meet the requirements of extremely slow voltage rise.
3. Automatically distinguish AC/DC test processes. If a DC test is performed, the discharge operation can be automatically performed after the test ends. During this period (if not discharged), opening the test chamber door will trigger an audible and visual alarm to warn of danger!
Safety Protection:
1. Overcurrent protection:
1.1 Low-voltage side overcurrent protection to protect the safe operation of the high-voltage transformer
1.2 High-voltage side overcurrent protection to protect the electrode surface from electric spark corrosion
1.3 If the preset leakage current is exceeded, cut off the high-voltage output
2. High-voltage power-off protection:
1.1 Automatically cut off high-voltage output when over range
1.2 High-voltage output can be manually shut down during the experiment
1.3 If voltage drop exceeds preset, cut off high-voltage output
3. Output zero-point protection:
1.1 Before the experiment starts, if the high-voltage output is not at zero, a prompt is given
1.2 If the high-voltage output is not at zero, force return to zero
4. Short-circuit protection:
1.1 If high-voltage output is short-circuited, automatically cut off output
1.2 If low-voltage input is short-circuited, automatically power off
5. Safety door protection:
1.1 If the chamber door is accidentally opened during the experiment, automatically cut off output
1.2 The test cannot be started when the chamber door is open
1.3 After the experiment ends, opening the chamber door cuts off the high-voltage output
6. Software protection:
Before each experiment starts, confirmation is required. Otherwise, a pop-up window appears
1.1 The high-voltage preparation switch is pressed, and the high-voltage indicator lights up
1.2 The experiment chamber door is closed
1.3 The voltage regulator is reset (high-voltage output is zero)
7. Discharge protection:
1.1 After DC test, when opening the chamber door, an audible and visual alarm sounds, requiring discharge of the equalizing ball
8. Leakage protection:
1.1 Independent grounding protection
1.2 Leakage protection switch
Stepless voltage regulation function: With the continuous birth of new materials, the requirements for testing their insulation performance are also increasing. Previous domestic testing instruments could only achieve a few fixed selectable voltage rise speeds, which could not well meet the test requirements. After introducing the concept of stepless voltage regulation, the voltage rise rate can be manually set within a certain range, which can better adapt to user needs.
III. Main Technical Requirements:
Input voltage: AC 220 V
Output voltage: AC 0--50 kV DC 0-50 kV
Voltage rise mode: continuous voltage rise, withstand voltage
Electrical capacity: 3KVA
High voltage grading: 0--50kV (full range without gears)
Breakdown voltage: 0--50kV
Voltage rise rate: (100V-3000V/s)
Voltage measurement accuracy (10%--100%FS): ≤ 1％
Test voltage: 0-20 kV continuously adjustable
Test method: AC test DC test (dual-use)
Voltage rise mode: DC test: 1. Uniform voltage rise 2. Gradient voltage rise 3. Withstand voltage test AC test: 1. Uniform voltage rise 2. Gradient voltage rise 3. Withstand voltage test
Two stop modes: 1. Voltage stop 2. Current stop
Test modes: 1. Test of insulating samples in air 2. Test of insulating samples immersed in oil
Test medium: 1. Air 2. Test oil
Overcurrent protection device: cut off power within 0.1S when sample breaks down.
Leakage current selection: [0-50mA] can be freely set (determined by test transformer capacity)
Current can be collected: up to mA level
Overcurrent protection device: cut off power within 0.01S when sample breaks down.
Operating environment: The instrument can operate stably at a temperature of 15 to 30℃ and a relative humidity of 0 to 85%.
Test environment: temperature between 15 and 25 degrees, relative humidity between 60% and 70%.
Power supply: The instrument can operate stably at a single-phase AC voltage of 220V±10% and a frequency of 50Hz±1%. The configuration includes various power cords required for normal operation of the instrument,
