By sion932 
The lightning impulse voltage generator test device under HVHIPOT can help many power workers conduct various power tests more conveniently.
In the fields of power systems, electrical equipment manufacturing, and high-voltage testing research, impulse current generators are essential key equipment, mainly used to simulate and test the tolerance and performance of electrical equipment under extreme conditions such as lightning strikes or operating overvoltages. Choosing the appropriate model of surge current generator is crucial for ensuring the accuracy and reliability of the test, as well as ensuring the safe operation of the equipment. This article will focus on the HVHIPOT brand and explore how to scientifically and reasonably select the generator model when conducting 8/20 μ s waveform impulse current tests.
Firstly, clarifying the experimental requirements is the basis for model selection. The 8/20 μ s waveform is a standard lightning impulse current waveform specified in the International Electrotechnical Commission (IEC) and national standards (GB), widely used for performance testing of components such as lightning arresters, surge protectors (SPD), and low-voltage electrical appliances. Users need to determine the core parameter requirements for the impulse current generator based on their own testing objects (such as the type of test sample, voltage level, current capacity) and specific standards to be followed (such as IEC 60060-1, GB/T 16927.1, etc.), mainly including peak current output capability, waveform parameter accuracy, energy level, and operational stability.
HVHIPOT, as a well-known brand in the field of high-voltage testing equipment in China, has a rich product line of impulse current generators that can meet the diverse needs of users at different levels. When selecting a specific model, attention should be paid to the following technical indicators: first, peak current, which is the maximum impulse current value that the equipment can generate, such as 50kA, 100kA or even higher, which directly determines the lightning current intensity level that the generator can simulate; The second is waveform conformity. A high-quality HVHIPOT generator can ensure that key parameters such as the leading time and half peak time of the 8/20 μ s waveform strictly comply with standard regulations, ensuring the effectiveness of the test; The third is the adjustability and flexibility of the equipment. Excellent models should be able to provide a wide range of current regulation and may integrate multiple waveform output functions (such as 4/10 μ s, 10/350 μ s, etc.) to adapt to a wider range of testing scenarios.
In addition to core performance parameters, the structural design and manufacturing process of the equipment cannot be ignored. HVHIPOT impulse current generators usually adopt modular design, which is convenient for transportation, installation, and later maintenance and expansion. Its internal key components, such as pulse capacitors, wave head and tail resistors, ball gap switches, etc., are all made of high-quality materials and manufactured through precision processes, ensuring the long-term stability and lifespan of the equipment under multiple high current shocks. At the same time, the modern control system is also an important symbol to measure the progressiveness of equipment. Wuhan’s HVHIPOT generators are often equipped with advanced computer control and measurement systems, which enable digital parameter settings, automatic waveform acquisition, real-time data processing, and report generation, greatly improving the automation and efficiency of testing.
Safety is of paramount importance for high-voltage testing equipment. When choosing the model of HVHIPOT impulse current generator, it is necessary to examine whether its safety protection measures are complete. This should include multiple electrical interlocking protections, emergency stop buttons, reliable grounding systems, prominent safety warning signs, and necessary physical isolation measures to ensure absolute safety of operators and equipment during the testing process. In addition, the technical support and service capabilities of suppliers are also important considerations. HVHIPOT can usually provide comprehensive technical support to scheme design, installation and commissioning, operation training to after-sales maintenance, which is of great value to users, especially units that are using it for the first time or have laboratory capabilities under construction.
In summary, selecting the generator model of HVHIPOT for the 8/20 impulse current test is a system engineering that requires comprehensive consideration. Users should evaluate the peak current output, waveform accuracy, stability, safety, automation level, and supplier’s service guarantee of the equipment in depth based on their actual testing needs and technical standards. By careful comparison and selection, investing in a HVHIPOT impulse current generator with matching performance, reliable quality, and guaranteed service will greatly enhance the laboratory’s testing capabilities and provide solid technical support for the quality control and safe operation of electrical equipment.