Power frequency series resonance withstand voltage test device? Wuhan UHV specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose Wuhan UHV.
The power frequency series resonance withstand voltage test device is the latest generation of AC withstand voltage test equipment, especially suitable for large capacity capacitive test samples (such as generators, cables, etc.), and is very convenient for on-site use. During the operation of power equipment, insulation will gradually deteriorate due to the long-term effects of electric fields, temperature, and mechanical vibrations, including overall deterioration and partial deterioration, forming defects. The power frequency AC withstand voltage test is the most effective and direct method for evaluating the insulation strength of power equipment, and is an important part of preventive testing. In addition, due to the fact that the AC withstand voltage test voltage is generally higher than the operating voltage, the equipment has a large safety margin after passing the test. Therefore, AC withstand voltage test is an important means to ensure the safe operation of power equipment.
The series resonant AC withstand voltage test device (cable withstand voltage test equipment) is applied in industries such as power, metallurgy, petroleum, and chemical engineering. It is suitable for the handover test and preventive test of large capacity capacitive samples, such as generators, power transformers, high-voltage cross-linked cables, etc. The TPXZB-210/60 cable AC withstand voltage test equipment can meet the AC withstand voltage test of 35kV cross-linked cables with a length of 1km. Can meet the AC withstand voltage test of 10kV cross-linked cable with a length of 2km. Can meet the AC withstand voltage test of 10kV voltage level power transformers.
Working principle of power frequency series resonance withstand voltage test device
The series resonance composed of reactor L and the tested capacitor C has a fixed resonance frequency F=1/(2 π√ L · C). When the test frequency is equal to this frequency, the circuit resonates. Through this principle, power is provided by a frequency modulation power supply to the excitation transformer, which is then transformed into medium voltage by the excitation transformer and added to L and the tested capacitor C. By changing the output frequency of the frequency modulation power supply, the circuit is in series resonance state, and then adjusting the output voltage of the frequency modulation power supply to achieve the required voltage value on the test sample.
Characteristics of power frequency series resonance withstand voltage test device
The large screen displays test data and test status, and has real-time operation step prompt function
Can flexibly adjust the experimental voltage, frequency range, and pressurization time
The test results can calculate the capacitance of the test sample
Equipped with computer communication interface for easy communication and management of experimental data
Small size, light weight, easy operation
High resolution, frequency resolution of 0.001HZ
High safety and reliability, the system has overcurrent, overvoltage, and discharge protection functions, which can effectively protect personal and equipment safety. The test results can be printed and upgraded with software