UNI-T UT502A Series Insulation Resistance Testers


UT500 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 dieal tools for ensuring transformers, genera-tors, high voltage motors, capacitors, cables, arresters and other electrical equipment that can oprate in a safe and accurate manner.

Specifications Range UT501A UT501B UT502A
Insulation resistance (Ω) Test voltages 100V/250V/500V/1000V 0%~10%
250V/500V/1000V 0%~10%
500V/1000V/2500V 0%~10%
100V 0MΩ~100MΩ ±(3%+5)
250V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5)
500V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
1000V 0MΩ~99.9MΩ ±(3%+5) ±(3%+5) ±(3%+5)
100MΩ~5GΩ ±(5%+5) ±(5%+5) ±(5%+5)
2500V 0MΩ~99.9MΩ ±(3%+5)
100MΩ~9.9GΩ ±(5%+5)
10GΩ~20GΩ ±(10%+5)
Load current 50V (R=50kΩ) 1mA 0%~10% 0%~10% 0%~10%
100V (R=100kΩ) 1mA 0%~10% 0%~10% 0%~10%
250V (R=250kΩ) 1mA 0%~10% 0%~10% 0%~10%
500V (R=500kΩ) 1mA 0%~10% 0%~10% 0%~10%
1000V (R=1MΩ) 1mA 0%~10% 0%~10% 0%~10%
2500V (R=1MΩ) 1mA 0%~10%
Short-circuit current <2mA <2mA <2mA
Low resistance (Ω) 0.01Ω~200Ω (about 5.0V/>200mA) ±(2%+3) ±(2%+3)
AC voltage (V) 30V~750V ±(2%+3)
30V~600V ±(2%+3) ±(2%+3)
Display count 2000 2000 2000
DAR 60s/15s and 60s/30s
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
Meets IEC 61557 61557-1:2007; 61557-2:2007; 61557-4:2007 (UT502A only)
General Characteristics
Power 1.5V battery (LR6) x 6
Display 70.6mm x 34mm
Product color Red and grey
Product net weight 500g
Product size 150mm x 100mm x 71mm
Standard accessories Batteries, test leads, alligator clips, gallus, test probes (UT502A)