Conventional Power Supply Design with Simple Analog Controls
HVI manufactures the most portable and easiest to use VLF hipots available. Offering the largest selection in the industry (including CE marked models), voltage ratings range from 30 kV – 200 kV with load ratings from 0.4 µF – 50 µF. HVI has been the world’s leading source for VLF test equipment since 1998.
VLF hipots perform voltage withstand tests and provide the voltage source for diagnostic cable testing. There is no better method for verifying the AC integrity of a cable than applying VLF AC voltage. Tan delta and partial discharge measurement accessories are frequently purchased along with VLF equipment to extend their capabilities.
VLF-34E
The VLF-34E is a top performer from the latest generation of HVI VLF AC hipots using a dry-type, air-cooled, solid state design with microprocessor control. Test programming, data retrieval, and custom PC software are intuitive and easy to learn. This unit is portable, affordable, and designed to withstand years of field use.
VLF-200CMF
VLF-200CMF provides a 200 kV AC peak output voltage suitable for performing VLF hipot tests on 138 kV cable and as a voltage source for tan delta and partial discharge testing on 160 kV cable. The controls offer all the features of other HVI VLF models along with VLF cable burn mode.
VLF-4022CM(F)
VLF-4022CM(F) has a 44 kVac peak output suitable for testing cables rated up to 25 kV. Its high load capacity can test over 10 miles (16 km) of cable, depending on type. This model includes a charging current and load capacitance meter, and a center zero peak kilovolt output meter. Two-piece construction makes it easy to transport and store.
VLF-6022CM(F)
VLF-6022CM(F) has a 62 kV AC peak output suitable for testing cables rated up to 35 kV. Its high load capacity can test up to over 10 miles (16 km) of cable, depending on type. This model includes: a charging current and load capacitance meter, test timer, and polarity indicating lights. The two-piece construction facilitates easy transport and storage.
VLF- 90CMF
The VLF-90CMF is a higher voltage model designed to test cables rated up to 50 kV. This model includes a charging current and load capacitance meter, test dwell timer, and polarity indicating lights. Its two-piece design makes it easier to transport, and an optional hand truck is available for purchase.
VLF-12011 CMF
The VLF-12011CMF provides a 120 kV AC peak output voltage, suitable for VLF hipot testing 69 kV cable and as a voltage source for partial discharge and tan delta testing of 115 kV cable. It offers a complete control package including cable burn mode, which reduces fault arc overvoltage events so that conventional thumpers can be deployed for fault locating. This model comes in a one-piece package with cable reels.
HIGH VOLTAGE, INC. (HVI) produces market-leading high voltage test equipment for proof testing, diagnostic evaluation, and preventive maintenance testing of electrical cables and apparatus designed to operate under medium to high voltage conditions. From transformer and control circuit design, component manufacturing, to assembly, testing, and shipment, HVI maintains quality control so that you can trust their products.
