KDVLF-80 ultra-low frequency AC voltage test device adopts new power electronic components and ARM7 microcontroller technology, which further reduces the volume and weight of the device, simpleton operation, more stable performance, and overcomes the shortcomings of the first generation mechanical booster with short service life, high failure rate and large volume. Through years of practice, a large number of users' feedback shows that: excellent technology, cost-effective!

Using digital frequency conversion technology, microcomputer control, voltage boost, buck, measurement, protection and other test processes are fully automated.
Easy operation: simple wiring, fool operation.
Comprehensive protection: multiple protection (overvoltage protection, high and low voltage sidecurrent protection), rapid action (action time ≤10ms), safe and reliable instrument.
Safe and reliable: low voltage connection between controller and high voltage generator, photoelectric control, safe and reliable use.
The high and low voltage closed loop negative feedback control circuit is adopted, and the output has no capacity rise effect.
Complete configuration: capacitive touch screen, LCD Chinese character display, automatic storage, automatic printing.
Large test range: 0.1Hz, 0.05Hz and 0.02Hz multi-frequency selection, large test range.
Small size, light weight: very conducive to outdoor work.

1. Output frequency: 0.1Hz, 0.05Hz, 0.02Hz
2. Load capacity: 0.1Hz Max. 1.1µF; 0.05Hz Max 2.2µF; 0.02Hz Max. 5.5µF
3. Measurement accuracy: 3%
4. Voltage positive, negative peak error: ≤ 3%
5. Voltage waveform distortion: ≤ 5%
6. Conditions of use: indoor, outdoor; Temperature: -10℃ ~ +40℃; Humidity: ≤ 85%RH
7. Power safety tube: See Table 3
8. Power supply: 220V±5%, 50±5Hz