UNI-T UT513A Insulation Resistance Tester

The UNI-T UT513A is a high-performance insulation resistance tester engineered for industrial professionals working with large transformers, HV motors, and generators. With selectable test voltages from 500V to 5000V, it measures insulation resistance from 0.5MΩ to 1000GΩ, providing precision at ±(3%+5) accuracy. Supporting both AC and DC voltage measurement (up to 600V), the UT513A delivers over 3mA short-circuit current, ensuring reliable insulation breakdown analysis.

Advanced features include Polarization Index (PI), Dielectric Absorption Ratio (DAR), analog bar graph, timing function (15 minutes), auto-range, high-voltage and overload warnings, auto discharge, and a secondary display for test voltage. The USB interface and included PC software enable easy data transfer and reporting, with storage for up to 18 test sets.

Certified to IEC 61557 standards, the UT513A weighs 2kg and comes with batteries, color-coded test leads, USB cable, software CD, and power adapter—an essential solution for high-voltage insulation diagnostics and preventive maintenance.