JC-2000 Type Variable Frequency Series Resonant Voltage Endurance Test DeviceDetailed product description：

The JC-2000 variable frequency series resonance withstand voltage test device applies the principle of series 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 undergo series resonance, and the resonance voltage is the voltage applied to the test sample.
The variable frequency series resonant withstand voltage test device is widely used in industries such as power, metallurgy, petroleum, and chemical, and is suitable for high-capacity, high-voltage capacitive test samples such as generators, transformers, etc GIS、 Handover and preventive tests for high-voltage cross-linked cables, transformers, bushings, etc.
Our company has independently developed frequency and voltage regulation software technology in the high-voltage testing of resonant devices, leading the domestic high-voltage testing industry. Using this technology, we design and manufacture a frequency modulation series parallel resonant high-voltage testing device using 16 bit fine frequency modulation, 10KHz carrier frequency, SPWM, and imported original IPM integral modules, which fully complies with the relevant national regulations and requirements for high-voltage testing.

working principle
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.

characteristic
1. The large screen displays test data, test status, and has real-time operation step indication function.
2. Able to flexibly adjust the test voltage, frequency range, and pressurization time.
3. The test results can calculate the capacitance value of the test sample and be printed.
4. Small size, light weight, and easy operation.
5. High resolution, frequency resolution of 0.01Hz, and voltage resolution of 0.01V.
6. High safety and reliability, the system has overvoltage, overcurrent, and discharge protection functions to ensure personal and equipment safety.
7. Upgradeable operating software.

Technical parameters of JC-2000 variable frequency series resonant withstand voltage test device
1. Environmental temperature: -10~45 ℃
2. Working humidity: ≤ 90%
3. Altitude: ≤ 2000M
4. Power input: 220V ± 10% single-phase output 0-2220V (≤ 10KW) 380V ± 10% three-phase, 50Hz output 0-400V
5. Rated test capacity: 0-8000KVA
6. Resonant voltage: 0-1000KV
7. Frequency adjustment range: 0.1-300Hz
8. System measurement accuracy: Level 0.5
9. Frequency adjustment resolution: 0.01Hz
10. Instability: ≤ 0.05%
11. Output waveform: sine wave
12. Waveform distortion rate: ≤ 0.5%
13. Noise: 60dB
14. Reactor Q value: 30-200