VLF High Voltage Withstand Cable Test Set is a high-voltage testing instrument used to test insulation materials and power equipment. It is usually used to test the electrical insulation performance of transformers, cables, switchgear, and other high-voltage equipment.
 

1. Output voltage

Model	Peak Voltage	Measuring Range	Weight	Purpose
30/1.1	30kV	≤1.1μF @ 0.1Hz	Controller: 4kg Booster: 25kg	Cables, generators with voltage of 10kV and below
		≤2.2μF @ 0.05Hz
		≤5.5μF @ 0.02Hz
50/1.1	50kV	≤1.5μF @ 0.1Hz	Controller: 5kg Booster: 35kg	Cables, generators with voltage of 20kV and below
		≤3.0μF @ 0.05Hz
		≤7.5μF @ 0.02Hz
80/1.1	80kV	≤1.1μF @ 0.1Hz	Controller: 5kg Booster: 45kg	Cables, generators with voltage of 35kV and below

2. Power supply: 220V±10%, 50±5%Hz
3. Output voltage precision: 4. Service environment: Temperature: －10⁰C～＋40⁰C, humidity: ≤85%RH
 

1. Advanced technology: By adopting digital frequency conversion technology and microcomputer control, the test procedures of boosting, voltage reduction, measurement, protection, etc. are fully automated. The instrument has the electronic calendar function, and the time can still be maintained after powering down.
2. Convenient operation: Simple wiring, and fully automatic operation.
3. Comprehensive protection: Multi-protection (over-voltage protection, over-current protection on high- and low-voltage side), rapid action (action time ≤ 20 ms), the instrument is safe and reliable.
4. Safe and reliable: The controller and the high-voltage generator are in low-voltage connection and under photoelectric control, which are safe and reliable to use.
5. By adopting high- and low-voltage closed-loop negative feedback control circuit, the output has no capacitive rise effect.
6. Complete configuration: 8-inch industrial touch screen, manual storage, and manual printing.
7. The instrument has the data communication function. It can be connected to a computer through a USB port for uploading test data to the compute

VLF High Voltage Withstand Cable Test Set is a high-voltage testing instrument used to test insulation materials and power equipment. It is usually used to test the electrical insulation performance of transformers, cables, switchgear, and other high-voltage equipment.
The VLF high-voltage tester tests by generating very low frequency high voltage signals, typically in the range of 0.01 Hz to 0.1 Hz. Compared to traditional AC high-voltage testing, this low-frequency signal can be more effectively injected into the insulation material of the tested equipment, thereby comprehensively evaluating its insulation performance.