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VLF 20kV RMS, VLF 27, VLF 20kV & 27kV RMS

VLF testing is the proven replacement for the traditional DC Hipot Acceptance or ‘Proof’ test. With more than 700 Very Low Frequency (VLF) units sold, and over 16 years of field use, HDW offers the only VLF units which are capable of measuring true leakage current. Our VLF technology provides the most meaningful test results because it is the only one on the market that replicates the stress of 60Hz ‘Operational AC’ Voltage.