UNI-T UT513A High Voltage Insulation Tester

UNI-T UT513A High Voltage Insulation Tester | 5kV Digital Megohmmeter with PI/DAR Testing

Professional 500V-5000V Insulation Resistance Testing for Industrial Applications in Sri Lanka

The UNI-T UT513A is a powerful 5kV digital insulation resistance tester designed for precise insulation resistance measurement up to 1000GΩ (1TΩ) in transformers, motors, cables, and high-voltage equipment. Featuring selectable test voltages from 500V to 5000V, PI/DAR calculations, 18-group data storage, USB interface, and comparison functions, it's perfect for industrial maintenance, electrical commissioning, and preventive testing across Sri Lanka's power and manufacturing sectors. With CAT III safety, auto discharge, high-voltage alarm, and rugged 2kg design, the UT513A delivers professional performance at an affordable price.

Engineered for demanding field applications, the UNI-T UT513A combines a large 9999-count LCD with 30-segment analog bar graph, continuous measurement mode, timer function (up to 30 minutes), and PC software compatibility for comprehensive insulation diagnostics. Its DC/AC voltage measurement (600V), low resistance testing, backlight display, and overload protection ensure safe, efficient operation in factories, substations, and renewable energy installations. Meeting IEC 61557 standards, this high-voltage insulation tester provides the advanced features professionals need for reliable electrical safety verification and compliance reporting.

Key Features of the UNI-T UT513A Insulation Tester

5kV High Voltage Testing Capability

Select test voltages: 500V, 1000V, 2500V, 5000V with accuracy ±(0%~20%) and short-circuit current >3mA for comprehensive insulation diagnostics up to 1000GΩ.

PI/DAR Advanced Diagnostics

Built-in Polarization Index (PI) and Dielectric Absorption Ratio (DAR) calculations with timer mode (15/30 minutes) for insulation aging and quality assessment.

18-Group Data Storage & USB

Stores up to 18 measurement sets with USB interface and PC software for easy data transfer, analysis, and professional reporting.

Large Display with Analog Bar Graph

9999-count LCD + 30-segment bar graph with backlight provides clear readings and trend visualization in all lighting conditions.

Comparison & Limit Functions

Programmable upper/lower limits with PASS/FAIL indication plus continuous measurement mode for efficient go/no-go testing and monitoring.

DC/AC Voltage & Low Resistance

Measures DCV/ACV up to 600V (±2%+3 digits) and low resistance (0.1Ω-999.9Ω) for complete electrical system diagnostics.

Safety & Auto Functions

Auto range, auto power off, low battery indication, high-voltage output alarm, auto current discharge, and overload protection ensure safe operation.

Rugged Professional Construction

Compact design (202x155x94mm, 2kg) with durable casing withstands industrial environments while remaining portable for field technicians.

Common Applications for UNI-T UT513A in Sri Lanka

This high voltage insulation resistance tester is purpose-built for:

Industrial Motor & Transformer Testing

Evaluates insulation integrity in large AC/DC motors, generators, and power transformers using PI/DAR analysis for predictive maintenance.

High-Voltage Cable & Power Line Inspection

Tests medium/high-voltage cables, overhead lines, and distribution systems to identify degradation before costly failures occur.

Electrical Substation Commissioning

Factory acceptance and site commissioning tests for switchgear, circuit breakers, and control equipment with data logging capability.

Renewable Energy & Solar Installations

Verifies insulation quality in PV inverters, DC cabling, and high-voltage renewable systems per IEC standards.

Technical Specifications of the UNI-T UT513A

Insulation Test Voltages

500V / 1000V / 2500V / 5000V DC (±0%~20% accuracy); short-circuit current >3mA.

Insulation Resistance Ranges

500V: 0.5MΩ~20GΩ; 1000V: 1MΩ~40GΩ; 2500V: 2.5MΩ~100GΩ; 5000V: 5MΩ~1000GΩ (±3%+5 digits).

DC/AC Voltage Measurement

600V DC / 600V AC (50/60Hz); accuracy ±(2%+3 digits).

Low Resistance Range

0.1Ω~999.9Ω for continuity and bonding tests.

Display & Bar Graph

9999-count LCD backlight + 30-segment analog bar graph; secondary test voltage display.

Diagnostic Functions

PI, DAR, comparison, timer (15/30 min), continuous mode, 18 data storage, USB/PC software.

Power & Battery Life

8 x 1.5V LR14 (C-size) alkaline batteries; >600 insulation tests per set.

Physical & Safety

Size: 202×155×94mm, 2kg; meets IEC 61557-1/2:2007 standards.

What's in the Box?

1 x UNI-T UT513A 5kV Insulation Tester

2 x Single-plug Test Leads to Alligator Clips (Black/Green)

1 x Dual-plug Test Lead to Alligator Clip (Red)

8 x 1.5V LR14 (C-size) Alkaline Batteries

1 x USB Communication Cable

1 x PC Software CD

1 x Power Adaptor

1 x Tool Box & English Manual

Downloads

📄 Download UNI-T UT513A Data Sheet

📄 Download UNI-T UT513A User Manual