All Tech Talk & Teach Back to Knowledge Center Stator Winding Withstand Testing Example – AC vs. DC Motor & Generator Withstand Test Voltages 50/60 Hz. & 0.1 Hz. VLF Motor & Generator HV Testing with 0.1 Hz. VLF Motor & Generator HV Testing with 50/60 Hz. AC Hipot Model Selection – Voltage & Current Needed? Vacuum Bottle Testing: Use AC – not DC Voltage. The HVI Differences Current Return Lead – Ground or Guarded Return post? Selecting an AC Hipot kVA Rating; How Much Current is Needed? Multi Output Ratings: Voltage vs. kVA vs. Current Secondary Capacitive Current Cancellation Circuit