With the introduction of portable VLF hipots, there is now a convenient and practical method of field testingunder various loads. Our partner High Voltage Inc. offers a complete Equipment Line of VLF test equipment.
ICMcompact – Dissipation factor and partial discharge measurement on cable
The ICMcompact is part of the ICMseries of digital partial discharge detectors. The ICMcompact is a compact, stand-alone instrument for evaluating the condition of medium and high voltage insulation. It is often used in quality assurance and quality control tests in manufacturing.
VLF-34E 34 kV VLF Tester
The VLF-34E is a new generation VLF AC hipot that uses a solid state design with microprocessor controls. It meets the requirements of applicable world standards regarding cable testing up to 25kV class Maintenance testing.
VLF28 – Mini VLF AC Hipot
The best way to expose defects in a cable is to AC hipot it using VLF technology. After any cable is installed or repaired, it should be VLF hipotted to insure the integrity of the insulation, splices, joints, etc.
VLF40 and VLF60 series
Finally: The portable VLF tester for XLPE, PE & EPR Cables VLF tester seriesallows companies an economic alternative to the DC testing.
What is VLF-testing?
VLF stands for Very Low Frequency and is generally considered to be 0.1 Hz and lower. The HVI VLF AC Hipots output a true sinusoidal AC voltage at 0.1 Hz or lower, rather than at 50 or 60 Hz. It is still AC voltage, only at a lower frequency. HVI VLF units offer frequencies as low as 0.01 Hz.