Suitable for insulation resistance testing of cable, motor, generator, transformer, mutual inductor, high voltage switch, arrester and other large equipment.Insulation resistance measurement (IR); polarization index measurement (PI); dielectric absorption ratio (DAR); ramp test mode (RAMP); Filtered resistance test mode (FR). Voltage test(V); capacity test(uF); current test(nA). 1. Model No.:ETCR3520 2. Insulation Resistance Range: 0.5MΩ~10TΩ 3. Rated Voltage: 250v~5Kv(5gears) 4. Shout Circuit Current: ≥7mA MAX 5. VoltageTest Range: AC/DC 0V~1000V 6. Power Supply : Rechargeable lithium battery pack 6.2Ah 14.8V