UNI-T UT502A Insulation Tester

UNI-T UT502A Insulation Tester | Advanced Digital Insulation Resistance Meter

Your Reliable Insulation Tester for Electrical Safety and Maintenance in Sri Lanka

The UNI-T UT502A is a high-performance digital insulation tester designed for accurate and dependable insulation resistance measurement essential for electrical equipment maintenance and safety verification. This versatile insulation resistance meter is ideal for electricians, engineers, and maintenance professionals working across Sri Lanka's industrial, power, and telecommunications sectors. Whether testing transformers, motors, cables, or switchgear, the UT502A delivers reliable readings with advanced features like Polarization Index (PI) and Dielectric Absorption Ratio (DAR) measurement for comprehensive insulation diagnostics.

Designed with a user-friendly interface and a robust handheld design, this digital insulation tester simplifies on-site inspections. It supports multiple test voltages up to 2500V, continuous low resistance measurement, auto discharge, and offers clear LCD backlighting for use even in low-light conditions. Certified to meet international safety standards, the UT502A is the perfect tool to ensure your electrical systems operate safely and efficiently.

Key Features of the UNI-T UT502A Insulation Tester

Multi-Voltage Testing Capability

Supports insulation resistance testing at 500V, 1000V, and up to 2500V for various electrical equipment and materials.

Polarization Index (PI) and Dielectric Absorption Ratio (DAR)

Includes advanced PI and DAR measurement functions with automatic resistivity calculations to assess insulation quality comprehensively.

Continuous Low Resistance Measurement

Offers precise low resistance testing with auto return-to-zero functionality ensuring enhanced measurement accuracy.

Clear LCD Display With Backlight

Large 2000-count digital LCD with backlight ensures clear readings in all lighting conditions, complemented by alarm light and buzzer alerts.

Auto Discharge and Safety Features

Automatic discharge of capacitive voltage after testing ensures user safety, alongside overload and high voltage indication.

Auto Power-Off and Low Battery Indication

Feature-rich with power-saving auto shutoff and a clear low battery indicator for reliability during fieldwork.

Robust and Portable Design

Compact handheld unit weighing approximately 500g, designed for durability and easy portability on all job sites.

IEC 61557 Compliance

Meets international standards IEC 61557-1:2007, 61557-2:2007, and 61557-4:2007 ensuring reliable and safe operation.

Common Applications

This insulation resistance tester is essential for:

Electrical Equipment Maintenance & Troubleshooting

Test insulation integrity in transformers, motors, generators, cables, and switchgear to prevent failures and extend equipment life.

Industrial and Power Systems Safety Checks

Verify insulation resistance to meet safety standards and protect personnel and equipment from electrical faults.

Installation & Commissioning

Confirm insulation quality during new equipment installation and after repairs or upgrades for compliance and reliability.

Technical Specifications of the UNI-T UT502A

Insulation Resistance Test Voltages (V)

500V, 1000V, 2500V

Insulation Resistance Range

0MΩ ~ 99.9MΩ (±3%+5) up to 2500V; extended range for higher resistance up to 20GΩ

Low Resistance Measurement

0.01Ω ~ 200Ω (±2%+3) with continuous measurement and auto zero return

AC Voltage Measurement

30V ~ 600V (±2%+3)

Display

Large 2000-count LCD with backlight, alarm light, and buzzer

Power Supply

6 x 1.5V batteries (LR6)

What's in the Box?

1 x UNI-T UT502A Insulation Tester

1 x Set of Test Leads & Alligator Clips

1 x Gallus Probe

1 x Temperature Probe

6 x 1.5V Batteries (LR6)

1 x Carrying Case

1 x English User Manual

Downloads

📄 Download UNI-T UT502A Data Sheet

📄 Download UNI-T UT502A User Manual