High Voltage Resonant Test Device
Darui Electric recommends
I. Working Principle of High Voltage Resonant Withstand Test Device
The variable frequency series resonant test device uses the principle of series and 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 object resonate, and the resonant voltage is the voltage applied to the test object. The power supply is provided by the frequency modulation controller. After the test voltage is initially boosted by the excitation transformer, the high voltage is applied to the reactor L and the test object CX. By changing the output frequency of the frequency modulation controller, the circuit is in a series resonance state; the resonant frequency of the circuit depends on the capacitance CX of the test object and the inductance L of the reactor. Adjust the output voltage of the variable frequency controller so that the high voltage on the test object reaches the required voltage value.
II. Product Introduction of High Voltage Resonant Withstand Test Device
The series (parallel) resonant transformer (variable frequency series resonant test device) carefully crafted by Tuopu Electric is widely used in electric power, metallurgy, petroleum, chemical, and other industries. It is suitable for capacitive test objects with large capacity and high voltage, such as generators, transformers, GIS, high-voltage cross-linked cables, mutual inductors, bushings, etc., for commissioning tests and preventive tests. Our company has independently developed variable frequency and voltage regulation software technology in the field of variable frequency series resonant high-voltage testing. In the domestic high-voltage testing industry, using this technology, we adopt 16-bit fine frequency conversion, 10KHZ carrier frequency, SPWM, and imported original IPM overall module design to manufacture a complete set of variable frequency series and parallel resonant test devices, which fully comply with the national regulations and requirements for high-voltage experiments.
III. Technical Parameters of High Voltage Resonant Withstand Test Device
Ambient temperature: -10～45℃
Ambient humidity: ≤90%
Altitude: ≤2000M
Power input: 220V±10% single-phase 50Hz Output 0～220V (≤10KW)
380V±10% three-phase 50Hz Output 0～400V
Rated test capacity: 0～8000KVA (optional)
Resonant voltage: 0～1000KV (optional)
Frequency adjustment range: 0.1～300Hz
System measurement accuracy: 0.5 level
Frequency adjustment resolution: 0.01Hz
Instability: ≤0.05%
Output waveform: sine wave
Waveform distortion rate: ≤0.5%
Noise: ≤60dB
Reactor Q value: 30～200 (optional)
IV. Product Introduction of High Voltage Resonant Withstand Test Device
Using this technology, we adopt 16-bit fine frequency conversion, 10KHZ carrier frequency, SPWM, and imported original IPM overall module design to manufacture a complete set of variable frequency series and parallel resonant test devices, which fully comply with the national regulations and requirements for high-voltage experiments.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
