... for HP Devices (Transformer, Electric Cable, and Electric Machines, etc) Built-in High Power Voltage Generator (250V ~ 5kV ... Polarization Index) and DAR (Dielectric Absorption Rate) Stepped Voltage Test, Temperature Compensation, Temperature Measurement, and Leak Current ... current, PI, DAR, and measurement time.Stepped Voltage TestTest voltage is gradually increased to measure variations of insulation ...