Phenix Technologies 475-20 Portable DC Hipot Tester, 75 kVDC 20mA. Phenix Technologies 475-20 Portable DC Hipot 75 kVDC 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.