Phenix Technologies 440-20 Portable DC Hipot Tester 40 kVDC 20mA. The Phenix Technologies 440-20 Portable DC Hipot 40kVDC is lightweight, compact, and ruggedly built for use in the lab or field for accurate testing of electrical switchgear, cables, motors, generators, and protective equipment. It includes many advanced features including high accuracy digital meters, analog charging current meter, adjustable overcurrent, and increased output current ratings.