Working parameters:
Power supply: AC 220V±10% 50Hz±10%
Ambient temperature: 0-40℃
Relative humidity: ≤90%
Output voltage: 0-30KV, 0-50KV, 0-80KV
Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
Load capacity: Max 1.1μF at 0.1Hz output, Max 2.2μF at 0.05Hz output, Max 5.5μF at 0.02Hz output
Voltmeter indication accuracy: ≤3%
Ammeter indication accuracy: ≤5%
Features:
The ultra-low frequency withstand voltage test device combines modern digital frequency conversion advanced technology, adopts microcomputer control, and fully automates voltage boosting, voltage reduction, measurement, and protection, with manual intervention possible during automatic voltage boosting. Due to full electronization, it is small in size and light in weight, with a large-screen LCD display that is clear and intuitive, and can display output waveforms and print test reports via printer. The design fully complies with Part 4 of the "General Technical Conditions for Special Test Instruments for Power Equipment": "General Technical Conditions for Ultra-Low Frequency High Voltage Generators" power industry standard, and 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 wave 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, thus the overall power consumption of the equipment is relatively high.
The ultra-low frequency withstand voltage test device can overcome these shortcomings. In addition, the following features need special explanation:
Current, voltage, and waveform data are all directly sampled from the high-voltage side, so the data is true and accurate.
Overvoltage protection: When the output exceeds the set voltage limit, the instrument will stop 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; the low-voltage side will shutdown for protection when the current exceeds the rated current, with action times both 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 circuit, the output has no capacitive rise effect.
Technical conditions:
Rated output voltage: 0-30KV, 0-50KV, 0-80KV
Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
Load capacity: Max 1.1μF at 0.1Hz, Max 2.2μF at 0.05Hz, Max 5.5μF at 0.02Hz
Measurement accuracy: 3%
Voltage positive and negative peak error: ≤3%
Voltage waveform distortion: ≤5%
Usage conditions: Indoor and outdoor; Temperature: -10℃ to +40℃; Humidity: ≤85%RH
Power supply: AC 50Hz, 220V ±5%
