80KV Ultra-Low Frequency Withstand Voltage Test Device
Darui Electric recommends:
The 80KV ultra-low frequency withstand voltage test device adopts microcomputer control, with fully automated voltage boosting, step-down, measurement, and protection,and manual intervention is possible during the automatic voltage boosting process. Due to full electronic design, it is small in size and light in weight, with a large-screen LCD display that is clear and intuitive, and a printer to output test reports. The design specifications fully comply with the power industry standard "General Technical Conditions for Special Testing Instruments for Power Equipment, Part 4: General Technical Conditions for Ultra-Low Frequency High-Voltage Generators", and it is very convenient to use. Currently, both domestic and international methods use mechanical modulation and demodulation to generate ultra-low frequency signals, resulting in non-standard sine waveforms, large measurement errors, spark discharge in the high-voltage part, bulky equipment, and the need for high-power high-voltage resistors for discharge shaping in the second and fourth quadrants of the sine wave, leading to high overall power consumption. This product can overcome these shortcomings. Additionally, the following features need special explanation:
Current and voltage data are directly sampled from the high-voltage side, ensuring data accuracy and authenticity.
Overvoltage protection: When the output exceeds the set voltage limit, the instrument will shut down for protection, with an action time of less than 20ms.
Overcurrent protection: Designed with dual protection for high and low voltage. The high-voltage side can perform precise shutdown protection according to the set value;
when the current on the low-voltage side exceeds the rated current, shutdown protection will be triggered, with an action time of less than 20ms.
★ The high-voltage output protection resistor is designed inside the voltage booster, so no external protection resistor is needed.
Due to the adoption of high and low voltage closed-loop negative feedback control circuits, the output has no capacitive rise effect.
1. Rated output voltage: See Table 1
2. Output frequency: 0.1Hz, 0.05Hz, 0.01Hz.
3. Load capacity: See Table 1 0.1 Hz max 1.1μF
0.05 Hz max 2.2μF
0.02 Hz max 5.5μF
4. Measurement accuracy: 3%
5. Voltage positive and negative peak error: ≤3%
6. Voltage waveform distortion: ≤5%
7. Operating conditions: indoor and outdoor; temperature: -10℃∽+40℃; humidity: ≤85% RH
8. Power supply: AC 50 Hz, 220V ±5%
9. Power fuse
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
