UNI-T UT500 SERIES INSULATION RESISTANCE TESTERS

UNI-T UT500 Series Insulation Resistance Testers

The UNI-T UT500 Series Insulation Resistance Testers are designed for electrical professionals and technicians who require precise, safe, and dependable insulation testing. With a clear 2000-count LCD display featuring backlight and overload indication, these testers provide easy-to-read measurements and enhanced safety during operation.

In addition, the auto discharge function safely dissipates residual charges after each test, ensuring the protection of both the user and the equipment. Moreover, the continuous low resistance measurement mode and low resistance returning to zero function improve measurement accuracy, while the built-in red warning light and buzzer provide a clear alert during ongoing measurements.

Furthermore, the UT500 Series supports advanced diagnostics, including Polarization Index (PI) and Dielectric Absorption Ratio (DAR) tests, and can automatically calculate resistivity for a comprehensive analysis. Additionally, these testers are capable of AC voltage measurement and include an auto power-off feature to conserve battery life, making them convenient for extended use in the field.

As a result, the UNI-T UT500 Series Insulation Resistance Testers combine accuracy, advanced functionality, and safety, making them an indispensable tool for professional insulation testing and electrical diagnostics.

  • 2000-count LCD display with backlight and overload indication.

  • Auto discharge function for safe dissipation of residual charge.

  • Continuous low resistance measurement and return-to-zero function for improved accuracy.

  • Red warning light and buzzer for clear alerts during testing.

  • Advanced diagnostics: Polarization Index (PI) and Dielectric Absorption Ratio (DAR).

  • Automatic resistivity calculation for professional analysis.

  • AC voltage measurement and auto power-off for energy efficiency.

  • Ideal for electricians, technicians, and electrical engineers requiring reliable insulation testing.

Specifications of UNI-T UT500 Series Insulation Resistance Testers

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)

Features

Display count

2000

2000

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

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)

Standard individual packing

Gift box, carrying bag, English manual

Standard quantity per carton

20pcs

Standard carton measurement

500mm x 380mm x 330mm (0.063 CBM per standard carton)

Standard carton gross weight

UT501A: 17.7kg; UT501B: 20.9kg; UT502A: 18.9kg