Hioki Insulation Tester, 10TOhm, ±30 %,

Test Voltage 250V to 5kV. Settings can be made in steps as fine as 25 V (250...1000 V). Insulation Resistance Measurement Up to 5 TOhm. Measure insulation of high-voltage equipment (such as transformers, cables, and motors). Automatically calculate and display PI (Polarization Index) and DAR (Dielectric Absorption Ratio). Step voltage testing, temperature compensation, temperature measurement, and leakage current display. Data storage and USB interface.