High Voltage Insulation Resistance Tester applied to 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); absorption ratio (DAR); ramp test mode(RAMP) ; filtered resistance test (FR); Voltage measurement(V); current measurement(nA) 1. Model No.: ETCR3500 2.. Rated Voltage: 250v~5Kv 3.. Insulation Resistance Range: 0.5MΩ~2TΩ 4. Voltage Range: AC/DC 0~1000V 5. Output Short Circuit Current: ≥5mA MAX 6.Power Supply: Rechargeable lithium battery pack 5200mAh