Exhibit with us
*mydirectindustry  
English
  1. Metrology - Laboratory
  2. Metrology and Test Equipment
  3. VLF tester
  4. Wuhan UHV Power Technology Co.,Ltd.
video corpo

VLF tester VLF
Hipotfor cables

VLF tester - VLF - Wuhan UHV Power Technology Co.,Ltd. - Hipot / for cables
VLF tester - VLF - Wuhan UHV Power Technology Co.,Ltd. - Hipot / for cables
Add to favorites
Compare this product
Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

Characteristics

Test type
Hipot, VLF
Tested product
for cables

Description

Product Introduction
  • Our company's new generation of very-low frequency high voltage generator is the core product of independent research and development using the latest technology, using 7 inch touch screen, imported high-speed AD acquisition circuit, and advanced production technology. Improve the quality and stability of the instrument, reduce the volume and weight of the equipment, simple operation, overcome many shortcomings of similar domestic products, cost performance is much higher than similar imported products of mechanical booster short service life, high failure rate, large volume shortcomings. Compared with other voltage test equipment, 0.1Hz ultra-low frequency has many advantages.

Main Features of VLF High-voltage Generator
  • High Intelligence: Utilizes digital frequency conversion technology with microcomputer control. The entire test process—including voltage boosting, stepping down, and measurement—is fully automated.
  • Easy Operation: Simple wiring combined with a 7-inch LCD touch screen ensures user-friendly operation and intuitive human-machine interaction.
  • Comprehensive Protection: Equipped with multiple protection functions (over-voltage protection, high-voltage and low-voltage side over-current protection) with fast action time (≤10 ms), ensuring safe and reliable instrument operation.
  • Safe and Reliable: The controller and high-voltage generator are connected via low-voltage lines with photoelectric control, ensuring safe and dependable use.
  • Closed-Loop Control: Adopts a high-voltage and low-voltage closed-loop negative feedback control circuit, ensuring output without capacity rise effects.
  • Accurate Sampling: High-voltage current and voltage data are obtained directly through high-voltage side sampling, ensuring true and accurate measurement results.
  • Complete Configuration: Features a 7-inch capacitive touch screen with LCD Chinese character display, automatic data storage, and automatic printing.
  • Wide Test Range: Supports multiple frequency options including 0.1 Hz, 0.05 Hz, 0.02 Hz, and 0.01 Hz, providing a broad test range.
  • Easy to Carry: Compact size and light weight make the instrument highly convenient for outdoor field operations.
  • Multi-Language Display: Supports Chinese and English switching, with customization available for other languages upon request.

Technical Parameters
  • Power supply: AC220V±5%, 50/60Hz. If using a generator, it must be a digital inverter generator with 220V output and power >8kW. Ordinary generators or UPS power supplies are prohibited.
  • Output Voltage: 30kV, 40kV, 50kV, 60kV, 70kV, 80kV, 80kV, 90kV
  • Output frequency: 0.1Hz, 0.05Hz, 0.02Hz,0.01Hz
  • Load Capacity: 0.1Hz-0.5μF, 0.05Hz-1.0μF,0.02Hz-2.5μF,0.01Hz-5μF
  • Measurement accuracy: 3%
  • Voltage positive,negative peak error: ≤3%
  • Voltage waveform distortion: ≤5%
  • Temperature: -10℃~+40℃
  • Humidity: ≤85%RH

Transportation and Storage of VLF Testers
  • Packing: pack in cartons or wooden cases with foam shockproof padding to protect against rain, dust and mechanical damage.
  • Transport modes: suitable for road, rail and air transport; do not place packaged units in an open cargo box during transit.
  • Storage conditions: store indoors in a ventilated location; ambient temperature for storage/use −20℃ to +60℃; relative humidity ≤85%; avoid corrosive gases. Do not place units directly on the ground or against walls.
  • Long-term storage: in humid conditions power the instrument on about once per month for approximately two hours to remove moisture and protect components.

Precautions for VLF Tester
  • Use the supplied booster/transformer only as specified by the tester documentation.
  • Do not place the booster on its side or upside down to avoid internal insulation oil leakage.
  • Do not disassemble or attempt repairs when the instrument is charged; repairs must be performed by qualified service personnel.
  • Maintain a safe distance before and during tests to ensure personnel safety.
  • Use a discharge rod to fully discharge the test specimen before and after voltage boosting operations.
  • When connecting, disconnecting, or temporarily not using the instrument, ensure the power is turned off.

FAQ of VLF High Voltage Generator
  • 1. What are the main tests used for VLF testers?
  • The VLF tester is mainly used for AC withstand voltage testing of high voltage electrical equipment such as power cables, generators, transformers, and motors, and is particularly suitable for on-site withstand voltage testing of medium and high voltage power cables.
  • 2. Why choose VLF withstand voltage test instead of power frequency withstand voltage test?
  • The VLF tester is smaller in size, lighter in weight, and requires lower power capacity, making it particularly suitable for on-site testing of long-distance cables. At the same time, the test results have good equivalence with the power frequency withstand voltage test.
  • 3. Are test reports and calibration certificates provided?
  • Okay. Test reports, factory inspection reports, and third-party calibration certificates can be provided before leaving the factory (if requested by the customer).
  • 4. Do you provide technical training and after-sales support?
  • Yes. We provide detailed English operation manuals, video guidance, online technical support, and remote fault diagnosis services to help customers quickly complete equipment use and maintenance.
  • 5. How to choose the appropriate model of VLF tester?
  • When selecting, you need to provide information such as the type of device being tested, cable voltage level, cable length, and testing standard requirements. Our technical team will recommend the most suitable solution for you.

VIDEO

Catalogs

Go to the Wuhan UHV Power Technology Co.,Ltd. website for more information

Other Wuhan UHV Power Technology Co.,Ltd. products

High Voltage Tester

*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.