Variable frequency series resonance withstand voltage test? 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.
Composed of a variable frequency power supply, excitation transformer, high-voltage reactor, and capacitive voltage divider. The capacitor and reactor of the test sample form a series resonant connection; The voltage divider is connected in parallel to the test sample to measure the resonant voltage on the test sample and provide an overvoltage protection signal; The frequency modulation power output is coupled to the series resonant circuit through an excitation transformer, providing excitation power for series resonance.
Working principle of frequency conversion series resonance withstand voltage test
By adjusting the output frequency of the variable frequency controller, resonance occurs between the inductance L of the reactor in the circuit and the capacitance C of the test sample, and the resonance 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.
Product characteristics of frequency conversion series resonance withstand voltage test
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
Precautions for frequency conversion series resonance withstand voltage test device:
1. This testing equipment should be used by professionals in high-voltage testing. Before use, the user manual should be carefully read and repeatedly operated and trained.
2. There should be no less than 2 operators. Strictly follow the safety operation regulations of our unit regarding high-voltage testing when using it.
3. In order to ensure the safety and correctness of the test, in addition to being familiar with the product manual, it is also necessary to strictly follow the relevant national standards and regulations for the test operation.
4. Each connecting wire must not be connected incorrectly, especially the grounding wire must not be connected incorrectly. Otherwise, it may cause damage to the testing device
5. When using the frequency conversion series resonance withstand voltage test device, the output is high voltage or ultra-high voltage, and it must be reliably grounded, paying attention to operational safety.
6. When the power is turned on and the voltage still cannot be boosted after returning to zero, please press the reset button for a long time (about 10 seconds) and make the indicator lights on the control box panel normal, that is, no other red lights are on except for "high voltage", and then start normal operation
7. When the voltage is greater than 10V and has not been tuned yet, the system will automatically detune to prevent high voltage damage to the test sample or even harm to the human body caused by resonance.
