Series resonance complete test device assists in AC withstand voltage test of cables

The domestic power, metallurgy, petroleum, chemical and other industries have ushered in an important technological innovation, and the series resonance complete test device plays an important role in the AC withstand voltage test of 10kV, 35kV and other cables. This new type of testing device is widely used for the handover and preventive testing of high-capacity and high-voltage capacitive test objects due to its high efficiency, accuracy, and stability.

The series resonance complete set device consists of a variable frequency power supply, an excitation transformer (also known as an excitation transformer), a reactor, and a capacitive voltage divider. The capacitance of the test sample and the reactor forms a series resonant connection, and by adjusting the frequency, the circuit reaches a series resonant state at a specific frequency. The voltage divider is connected in parallel with the test sample to accurately measure the resonant voltage on the test sample, while providing overvoltage protection signals. The frequency modulation power output is coupled to the series resonant circuit through an excitation transformer to provide excitation power for series resonance.

This new experimental device not only adopts multi-stage stacking method, multiple reactors can be used in parallel or series, but also solves various problems that may occur in traditional experimental equipment in high-voltage testing. For example, traditional testing equipment often requires a large testing capacity due to high voltage levels and high currents, as well as multi-stage step-up transformers. The testing process is complex and requires high technical requirements for operators. The series resonance assembly can effectively solve these problems, making the testing process more efficient, accurate, and safe.

It is reported that this new series resonant complete set of equipment has been successfully applied in multiple power, metallurgical, petroleum, and chemical enterprises, providing strong technical support for high-voltage capacitive testing of enterprises. For example, in the 10kV cable AC withstand voltage test of a large power enterprise, the device successfully detected potential problems with the cable, avoiding possible power accidents.

The successful application of series resonance complete sets of equipment not only improves the level of power equipment testing in enterprises, but also contributes to the technological progress of the entire industry. The emergence of this device will undoubtedly promote the development of industries such as power, metallurgy, petroleum, and chemical, and will also provide more accurate and safe technical support for the handover and preventive testing of high-voltage capacitive tests.

With the continuous development of technology, we have reason to believe that series resonant complete sets of devices will play a greater role in the future. Through continuous research and technological innovation, we will usher in more efficient, safe, and intelligent power equipment detection technology, injecting new vitality into the development of the power industry.