By sion932 
Frequency modulation series resonance test device? HVHIPOT specializes in the production of series resonance, with a wide range of product selection and professional electrical testing. To find series resonance, choose HVHIPOT.
Frequency modulation series resonance test device
The AC withstand voltage test of various large power transformers, power cables, steam turbines, hydro generators, and other capacitive equipment must be strictly conducted regularly in accordance with the test regulations. Under power frequency conditions, due to the large capacitance of the test object or high requirements for the test voltage, there are also high requirements for the power supply capacity of the test device. At present, a better method is to use frequency modulation series resonance equipment for voltage withstand testing. The frequency modulation series resonance test device is designed for AC withstand voltage testing of high voltage and high current capacitive specimens such as power cables. By adjusting the frequency and adjusting the air gap of the iron core for tuning, it is convenient and accurate to find the resonance point. At the same time, it can also meet the requirements of different samples and regulations in different places, so that the resonance frequency is fixed within the required range. The quality factor of the system can reach 20-80, making it lightweight and easy to operate; The frequency modulation series resonance test device adopts multiple protective measures, making the test convenient and reliable; The inherent filtering effect of resonance ensures that the waveform output by the system fully meets the requirements of the test protocol.
Principle of FM series resonance test device
The frequency modulation series resonance test device applies the principle of series parallel resonance. By adjusting the output frequency of the variable frequency controller, the inductance L of the reactor in the circuit and the capacitance C of the test sample resonate, and the resonant voltage is the voltage applied to the test sample. The power supply is provided through the frequency modulation controller, and the test voltage is initially boosted by the excitation transformer to apply high voltage to the reactor L and the test sample CX. By changing the output frequency of the frequency modulation controller, the circuit is in series resonance state; The resonant frequency of the circuit depends on the capacitance CX of the test sample and the inductance L of the reactor. Adjust the output voltage of the variable frequency controller to achieve the required voltage value of the high voltage on the test sample.
Characteristics of FM series resonance test device
1. The large screen displays test data and test status, and has real-time operation step prompt function
2. Able to flexibly adjust experimental voltage, frequency range, and pressurization time
3. The test results can calculate the capacitance of the test sample
4. Equipped with computer communication interface for easy communication and management of experimental data
5. Small size, light weight, and easy operation
6. High resolution, frequency resolution of 0.001HZ
7. 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