What is VLF Tan delta? Tan delta refers to the tangent of the angle of loss between the voltage and the current in an AC circuit. VLF (Very Low Frequency) is a type of AC test performed on cables, which uses an oscillating voltage at a frequency typi

VLF hipot and VLF testing is as simple as an AC hipot on lower frequency output (at 0.1 Hz). The only way to field test high capacitance loads with AC voltage, like cables and motors/generators, is to use a VLF AC hipot. Lower the frequency, Lower w

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