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Insulation Resistance Tester UT501A – 1000V


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Specifications Range Best Accuracy
Model   UT501A
Insulation Resistance (Ω) Test Voltage 100V/250V/500V/1000V 0%~10%
100V 0.00MΩ~100MΩ ±(3%+5)
250V 0.00MΩ~99.9MΩ ±(3%+5)
100MΩ~5.0GΩ ±(5%+5)
500V 0.00MΩ~99.9MΩ ±(3%+5)
100MΩ~5.0GΩ ±(5%+5)
1000V 0.00MΩ~99.9MΩ ±(3%+5)
100MΩ~5.0GΩ ±(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
AC Voltage (V) 30V~750V ±(2%+3)
Display Count   2000
Auto Range  
Low Battery Indication  
LCD Backlight  
Alarm Light Display  
Alarm Buzzer  

HighVoltage Indication

Over Load Indication  
Auto Disharge  
Test Voltage Vice Display  
10MΩ Internal Resistance Test  


UT501A Insulation Tester
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 Ratio). 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

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