The CRVLF-80-1.1 80KV ultra-low frequency AC withstand voltage test device combines modern digital frequency conversion technology, adopts microcomputer control, and automates voltage boosting, voltage lowering, measurement, and protection. Due to full electronicization, it has a small size, light weight, large screen LCD display, clear and intuitive display, and can display output waveforms and print test reports. The design indicators * comply with the power industry standard of "General Technical Conditions for Power Equipment Testing Instruments, Part 4: General Technical Conditions for Ultra Low Frequency High Voltage Generators", and are very convenient to use. Nowadays, both domestically and internationally, mechanical methods are used for modulation and demodulation to generate ultra-low frequency signals, resulting in non-standard sine wave waveforms, large measurement errors, spark discharge in the high-voltage part, bulky equipment, and high-power high-voltage resistors for discharge shaping in the second and fourth quadrants of the sine wave. Therefore, the overall power consumption of the equipment is relatively high. This product can overcome some of these shortcomings, and in addition, there are the following features that need to be specifically explained:

1. Current, voltage, and waveform data are directly sampled from the high-voltage side, so the data is accurate.

2. It has overvoltage protection function. When the output exceeds the set voltage limit, the instrument will stop for protection, with an action time of less than 20ms.

3. Equipped with overcurrent protection function: designed with high and low voltage dual protection, the high voltage side can be shut down for protection according to the set value; When the current on the low-voltage side exceeds the rated current, a shutdown protection will be implemented, with an action time of less than 20ms.

4. The high-voltage output protection resistor is designed inside the boost body, so there is no need to connect another protection resistor externally.

Due to the use of high and low voltage closed-loop negative feedback control circuits, there is no capacitance rise effect in the output.