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UT513A

5kV Basic Insulation Resistance Tester

$479.99
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1000GΞ© insulation resistance tester with test voltages up to 5000V. Designed for electrical contractors and maintenance teams testing high-voltage cables, transformers, and rotating machinery.

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UNI-T UT513A 5kV Insulation Resistance Tester

Overview

The UT513A is the straightforward 5 kV insulation tester for routine maintenance and commissioning. It outputs test voltages up to 5 kV, reads insulation resistance up to 1 TΞ© at Β±(3%+5) accuracy, and is rated CAT III 600 V β€” the core capability for checking motor windings, cables, and switchgear without the extras you don't always need.

It still runs a Polarization Index test for moisture and aging, displays leakage current, and discharges the circuit automatically when a test ends. A comparison function gives a quick pass/fail call, and results store on-board for transfer over USB. It's backed by UNI-T's nearly 40 years of test-meter manufacturing.

Key Features

  • Test voltage output up to 5 kV
  • Insulation resistance up to 1 TΞ©, accuracy Β±(3%+5)
  • Polarization Index (PI) timed test
  • Automatic discharge after test
  • Comparison function for pass/fail
  • Auto-ranging measurement
  • 18-set data storage with USB transfer
  • CAT III 600 V safety rating

UT513A Details

5 kV Insulation Testing

The UT513A delivers test voltage up to 5 kV and reads insulation resistance up to 1 TΞ©, covering the routine high-voltage checks in motor, cable, and switchgear maintenance with auto-ranging that keeps readings on-scale without manual range selection.

Polarization Index

A timed PI measurement flags moisture and aging in windings that a quick spot reading would pass, so early insulation degradation shows up before it becomes a failure.

Discharge & Comparison

The circuit discharges automatically at the end of each test, and a comparison function sets a pass/fail threshold for fast, consistent go/no-go decisions across multiple test points.

Field Build

A compact handheld rated CAT III 600 V, the UT513A stores 18 result sets and transfers them to a PC over USB for basic record-keeping.

Compare the UT513 Series

UT512E UT513A UT513B UT513C
Max test voltage 2500 V 5 kV 5 kV 5 kV
Max insulation resistance 2.5 TΞ© 1 TΞ© 2 TΞ© 5 TΞ©
Voltage stepping (10% of range) Yes β€” Yes Yes
PI / DAR diagnostics PI PI PI / DAR PI / DAR
Capacitance measurement 2 Β΅F β€” β€” 0.01–15 Β΅F
Data storage 999 sets 18 sets 999 sets 999 sets
Bluetooth app β€” β€” β€” Yes
Safety rating CAT IV 600 V CAT III 600 V CAT IV 600 V CAT IV 600 V

Applications

Routine insulation checks on motor and generator windings; cable and feeder testing; switchgear and panel maintenance; and commissioning checks before equipment is energized.

Frequently Asked Questions

What is the maximum test voltage and resistance range?

The UT513A outputs up to 5 kV and reads insulation resistance up to 1 TΞ©.

Does the UT513A measure Polarization Index?

Yes β€” it runs a timed PI test to reveal moisture and aging in insulation.

Should I choose the UT513A or the UT513B?

The UT513A is the basic 1 TΞ© / CAT III model for routine testing; step up to the UT513B for a 2 TΞ© range, CAT IV 600 V, stepped-voltage profiling, DAR, and 999-set storage.

Warranty

This product includes a standard 1-year warranty covering manufacturing defects and component failures under normal use conditions.

UNI-T stands behind every product we sell. If you experience any issues within the warranty period, our US-based support team is here to help with troubleshooting, repair, or replacement.