T500 series insulation testers are used to measure the insulation resistance of electrical  equipment and household appliances. This is done by measuring the insulation resistance between electrical circuits or between circuits and ground. UT500 series can measure insulation resistance, AC Voltage, low resistance, PI (Polarization Index) and DAR (Dielectric Absorption). These are ideal  tools for ensuring transformers, generators, high voltage motors, power capacitors, power cables, arresters and other electrical equipment that can operate in a safe and accurate manner.

• 2000 count LCD display, overload indication, backlight
• AC voltage measurement, auto power off
• Auto discharge
• Continuous measurements mode, red warning light and buzzer function
• Continuous low resistance measurement
• PI and DAR measurement, auto resistivity calculation 
• Low resistance returning to zero function to improve accuracy 

Technical data:

• Insulation resistance (Ω) Test voltages 250V/500V/1000V 0%~10%
• 250V 0MΩ~99.9MΩ ±(3%+5)
• 100MΩ~5GΩ ±(5%+5)
• 500V 0MΩ~99.9MΩ ±(3%+5)
• 100MΩ~5GΩ ±(5%+5)
• 1000V 0MΩ~99.9MΩ ±(3%+5)
• 100MΩ~5GΩ ±(5%+5)
• Load current 50V (R=50kΩ) 1mA 0%~10% 
• 100V (R=100kΩ) 1mA 0%~10% 
• 250V (R=250kΩ) 1mA 0%~10% 
• 500V (R=500kΩ) 1mA 0%~10% 
• 1000V (R=1MΩ) 1mA 0%~10% 
• Short-circuit current 　 <2mA
• Low resistance (Ω) 0.01Ω~200Ω (about 5.0V/>200mA） ±(2%+3)
• AC voltage (V) 30V~600V ±(2%+3)
• Features
• Display count 　 2000
• DAR 60s/15s and 60s/30s √
• PI 　 √
• Auto range/Low battery indication 　 √
• LCD backlight/Light alarm 　 √
• Buzzer alarm/High voltage indication 　 √
• Over load indication/Auto discharge 　 √
• Test voltage secondary display 　 √
• 10MΩ internal resistance test 　 √
• General Characterisitics
• Power 1.5V battery (LR6) x 6  
• Display 70.6mm x 34mm