UT502A Megger Insulation Resistance Tester 2500V


UNI-T Brand

4,750.00 EGP 4750.0 EGP 4,750.00 EGP

4,750.00 EGP

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Internal Reference: AVO.UT502A.UNIT

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


  • 2000 count LCD display, overload indication, backlight
  • AC voltage measurement, auto power off
  • Auto discharge
  • Continuous low resistance measurement
  • Continuous measurements mode, red warning light and buzzer function
  • PI and DAR measurement, auto resistivity calculation
  • Low resistance returning to zero function to improve accuracy
SpecificationsRange UT501AUT501BUT502A
Insulation resistance (Ω)Test voltages100V/250V/500V/1000V0%~10%  
  250V/500V/1000V 0%~10% 
  500V/1000V/2500V  0%~10%
 2500V0MΩ~99.9MΩ  ±(3%+5)
  100MΩ~9.9GΩ  ±(5%+5)
  10GΩ~20GΩ  ±(10%+5)
 Load current50V (R=50kΩ) 1mA0%~10%0%~10%0%~10%
  100V (R=100kΩ) 1mA0%~10%0%~10%0%~10%
  250V (R=250kΩ) 1mA0%~10%0%~10%0%~10%
  500V (R=500kΩ) 1mA0%~10%0%~10%0%~10%
  1000V (R=1MΩ) 1mA0%~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  200020002000
DAR60s/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     
Power1.5V battery (LR6) x 6       
Display70.6mm x 34mm       
Product ColorRed and grey       
Product net weight500g       
Product size150mm x 100mm x 71mm       
Standard accessories
 Batteries, test leads, alligator clips, gallus  Batteries, test leads, alligator clips, gallusBatteries, test leads, alligator clips, gallus, test probes
Standard individual packing
   Gift box, carrying bag, English manual  Gift box, carrying bag, English manual  Gift box, carrying bag, English manual