The UNI-T UT513A Insulation Resistance Tester is a professional high-voltage digital megohmmeter designed for advanced insulation testing and preventive maintenance in industrial, commercial, and power system applications. Engineered for electricians, maintenance engineers, utility technicians, and industrial inspectors, this device delivers precise insulation resistance measurements up to 1000GΩ with selectable test voltages up to 5000V.
Built for demanding electrical diagnostics, the UT513A supports insulation testing for motors, transformers, cables, switchgear, generators, and high-voltage electrical equipment. It features advanced diagnostic functions including Polarization Index (PI) and Dielectric Absorption Ratio (DAR) measurements, helping professionals evaluate insulation condition and detect early equipment deterioration.
The tester is equipped with a large 9999-count backlit LCD display combined with a 30-segment analog bar graph for clear and accurate monitoring. Additional features such as timed testing, automatic discharge, USB connectivity, internal data storage, comparison measurement mode, and high-voltage warning indicators make it a reliable solution for professional insulation analysis.
Key Features:
- Insulation resistance measurement up to 1000GΩ
- Selectable test voltages: 500V / 1000V / 2500V / 5000V
- Polarization Index (PI) testing
- Dielectric Absorption Ratio (DAR) testing
- Large 9999-count LCD display
- 30-segment analog bar graph
- Automatic discharge protection
- Data storage for up to 18 measurement groups
- USB interface for PC communication
- Comparison measurement function
- Timed measurement mode
- Backlit display for low-light environments
- High-voltage warning indication
- Auto range and auto power-off
- Rugged professional-grade construction
