Complete set of frequency conversion series resonance test equipment sold directly by Topu brand manufacturer

Equipment Introduction
Created by Topu Electrical SpecialtyComplete set of frequency conversion series resonance test equipment sold directly by Topu brand manufacturerThe product utilizes embedded microelectronics technology and digital signal processing technology, and adopts a user-friendly color LCD screen display, with advantages such as functionality and simple operation.
75kVA/75kV/1AComplete set of frequency conversion series resonance test equipment sold directly by Topu brand manufacturerThe product is widely used in industries such as installation (repair, testing) of power facilities enterprises, power supply, generation, railway, steel, petrochemical, mining, and transmission and transformation equipment manufacturing to conduct AC withstand voltage tests on large capacity and high-voltage capacitive specimens.

working principle
The principle of series resonance should be applied to adjust the output frequency of the variable frequency controller, so that 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 by 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 C. 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 C 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 for the high voltage on the test sample.

Device composition
1. Variable frequency power supply: It can change its output frequency and output voltage to provide power to the resonant circuit.
2. Excitation transformer: isolates the host power supply from the resonant circuit power supply and increases the output voltage of the host.
3. Resonant reactor: forms a series resonant circuit with the test object, and can be configured with multiple reactors. When used, different series parallel combinations are used to achieve different inductance values to adapt to different test conditions.
4. Capacitive voltage divider: measures the voltage on the test sample and feeds it back as a sampling signal to the variable frequency power supply host.

Functional Features
1. The series resonance test device adopts a color LCD screen to display test data and test status, and has the function of prompting operation steps.
2. Flexible segmented setting of test voltage, test time, and frequency range.
3. The test results can calculate the capacitance value of the test sample and print relevant test data.
4. Single piece equipment has a small volume, light weight, and is easy to conduct on-site tests.
5. This experimental system has two testing methods, automatic testing and manual testing, and is easy to operate.
6. The high-voltage resonance test device has high safety and reliability, and the system has overcurrent, overvoltage, and discharge protection functions, which can effectively protect personal and equipment safety.

Technical Specifications
1. Power supply voltage: AC 380V ± 10%, 50Hz
2. Instrument working power supply: AC 220V ± 10%, 50Hz
3. Resonant output capacity: 0-75kVA
4. Resonance test voltage: 0-75kV
5. Output frequency range: 30-300Hz
6. Frequency adjustment sensitivity: 0.1Hz
7. Instability: ≤ 0.05%
8. Output voltage waveform: sine wave
9. Waveform distortion rate:<0.5%
10. Measurement accuracy:<Level 1
11. System noise: ≤ 60db
12. Protection response time: 1 μ s
13. Environmental temperature: -15 ℃~50 ℃
14. Relative humidity: ≤ 90%
15. Altitude: ≤ 2000m

Friendly reminder: When purchasing frequency conversion resonance testing equipment, choose products directly from the manufacturer, as product quality and after-sales service are guaranteed!

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