Key points and suggestions for selecting a thin film 50 point electrode breakdown tester:

1、 Core standard matching

National standard compatibility
Priority should be given to selecting equipment that meets the standards of GB/T 36363-2018 (lithium battery separators) and GB/T 1408.1-2016 (general insulation materials) to ensure that the test results have legal validity.

Test mode support
It needs to support both DC/power frequency voltage testing and be able to automatically switch modes to meet different material requirements.

2、 Key parameter requirements

Voltage range: It is recommended to choose wide range equipment with DC 50V-6kV (lithium battery separator) or DC 50V-100kV (high voltage resistant material).

Electrode configuration: A 50 point array electrode with a diameter of ≤ 0.1mm must be equipped to ensure testing uniformity.

Control accuracy: The boost rate can be adjusted (0.1-5kV/s), and the voltage measurement error is ≤ 1%.

3、 Function and Safety

Degree of automation
Choose devices with one click testing and batch data export capabilities to reduce human error.

Security protection
It should include overvoltage/overcurrent protection, grounding detection, and high-voltage interlock functions, in compliance with the IEC 61010 safety standard.

4、 Brand and Price Reference

Medium model (50000 to 100000 yuan): Beiguang Precision Instrument BDJC-50D is suitable for scientific research and quality inspection institutions.

5、 Purchase suggestions

Priority verification: Require manufacturers to provide standard sample test reports to confirm equipment reproducibility (e.g. 5 test deviations ≤ 5%).

After sales service: Choose a brand that provides a warranty of more than 3 years and on-site engineer training.

Note: Before testing, it is necessary to confirm the compatibility between the sample size and the electrode to avoid edge effects affecting the results

50 clicks on the difference between penetration and breakdown

The difference between 50 click penetration and breakdown is mainly reflected in the testing method and application scenarios:

50 clicks to wear
Refers to the continuous or synchronous breakdown voltage testing of multiple test points (usually 50) using specialized equipment (such as a 50 point breakdown voltage tester). This test is mainly used to evaluate the insulation performance of solid insulation materials (such as plastics, ceramics, etc.) under multiple simultaneous pressures, and is suitable for batch testing or material uniformity analysis

Conventional breakdown
The phenomenon of a single test point or sample losing its insulation performance under voltage, usually measured by gradually increasing the voltage until the material breaks down to measure the breakdown voltage or breakdown field strength. Its classification includes electrical breakdown (directly caused by strong electric fields) and thermal breakdown (caused by heat accumulation).

Core Differences:

Test scale: 50 click penetration emphasizes multi-point parallel testing, while conventional penetration is mostly single point testing.

Application purpose: 50 click penetration is suitable for efficient batch testing, while conventional breakdown focuses more on the insulation threshold of the material itself.

Equipment requirements: A dedicated multi-channel device is required for 50 clicks, and a standard breakdown tester can be used for routine breakdown

Comparison of 50 click penetration and conventional penetration

Conventional breakdown
Conventional breakdown testing, such as voltage withstand testing and breakdown voltage detection, is the fundamental method for evaluating electrical insulation performance and is widely used in quality inspection of products such as wires and cables, electronic components, and insulation materials. Its single point testing mode is simple and direct, with low equipment cost, making it an insulation performance testing method in the industrial field.

50 clicks to wear
50 click penetration belongs to multi-point synchronous testing technology, mainly used for batch testing or material uniformity analysis (such as solid insulation materials such as plastics and ceramics), and requires dedicated multi-channel equipment support. Due to the complexity of the equipment and high testing costs, its application scenarios are relatively limited, and it is commonly used in scientific research or high-precision production processes.

Conclusion: Conventional breakdown is a more suitable testing method due to its simple operation, low cost, and wide applicability; 50 clicks are only selected for specific needs (such as efficient batch testing)

50 click through voltage testing principle

The breakdown voltage is a key parameter for evaluating the tolerance of insulation materials under impulse voltage, and its core principle is based on probability statistics and the dispersion of discharge delay. Under the action of impulse voltage, due to factors such as uneven dielectric properties and insulation recovery, breakdown may or may not occur at the same voltage. Through multiple experiments (usually adjusting the voltage to 4-6 out of 10), this voltage value is defined as the breakdown voltage.

Classification of testing methods

Power frequency test voltage method
Use power frequency AC voltage to gradually increase the voltage and record the voltage value at the moment of breakdown. During testing, it is necessary to ensure that the sample is not damaged, the electrode spacing is standardized (such as wrapping the enameled wire 5-10 times), and the boosting rate is usually 100-500V/s.

DC test voltage method
Through direct current power testing, the electric field distribution is different from alternating current, and the insulation performance of materials under stable electric fields can be evaluated. Attention should be paid to the impact of charge accumulation under DC voltage on the results.

Impulse voltage method
Simulate transient overvoltages such as lightning, and test the insulation strength of equipment under conditions using short-term high-voltage pulses (such as 1.2/50 μ s waveforms).

Breakdown mechanism

·Electric breakdown: The instantaneous breakdown caused by the avalanche effect of electrons inside the medium under a strong electric field is related to the short voltage application time and the uniformity of the electric field.

·Thermal breakdown: When the heat generated by dielectric loss exceeds the heat dissipation capacity, the temperature continues to rise until insulation failure occurs, which is common in long-term operating equipment