UNI-T UT501E Fast Insulation tester

UNI-T UT501E Fast Insulation tester

The UNI-T UT501E Fast Insulation Tester is a compact, handheld instrument designed to streamline the process of measuring electrical insulation integrity. Housed in a robust, impact-resistant casing with an IP54 rating, the UT501E accommodates both indoor and field-based environments, enabling technicians to carry out rapid insulation assessments across a variety of equipment and installations. Its streamlined form factor, combined with an intuitive rotary switch and clearly labeled terminals, facilitates quick setup and straightforward operation, reducing the learning curve for new users while maintaining reliability for seasoned professionals.

At its core, the UT501E employs high-precision circuitry to generate test voltages up to 1 000 V and deliver them into the insulation under test, all while maintaining leakage currents below safety thresholds. An analog bar graph and segmented LCD provide real-time visual feedback of both insulation resistance levels and test voltages, and an automatic discharge mechanism ensures the tested circuit returns to a safe state immediately upon test completion. Built-in safeguards, such as external voltage detection, prevent inadvertent testing on live circuits, thereby mitigating risk and enhancing user confidence during critical maintenance tasks.

Beyond raw measurement capability, the UT501E integrates practical conveniences that simplify workflow. A remote-controlled test lead allows initiation and termination of measurements without direct contact with the instrument, ideal for hard-to-reach or hazardous areas. Data-hold functionality preserves readings on the display after test completion, while onboard storage can archive up to 99 test results for later review or transfer. Rechargeable lithium-ion power and auto power-off further extend operational readiness, ensuring the tester remains available when and where rapid insulation diagnostics are required.

In sum, the UNI-T UT501E combines speed, safety, and portability in a single package, offering electrical engineers and maintenance personnel a versatile solution for verifying insulation health, diagnosing potential faults, and maintaining system reliability without compromising on measurement accuracy or ease of use.

Features:

• 2.5× Faster Insulation Measurement: Achieves insulation resistance readings up to 2.5 times quicker than conventional testers.
• Auto Discharge: Automatically discharges test voltage after each measurement to ensure operator safety.
• High-Voltage Alarm: Audible and visual alert if residual or external voltage above safe thresholds is detected.
• Manual Insulation-Range Selection & Auto Voltage-Range: Choose insulation test voltage manually (100 V, 125 V, 250 V, 500 V, 1000 V) while the AC/DC voltage range is selected automatically.
• Data Storage: Stores up to 99 test results for recall or later download.
• Safety-Lock Function: Locks the TEST button mechanically to prevent false starts and enhance handling safety.
• Overrange Display (“OL”): Clearly indicates when measured values exceed the instrument’s maximum range.
• Remote-Controlled Test Lead: Allows start/stop of measurements from a distance, ideal for hard-to-reach or hazardous setups.
• Analog Bar-Graph & Segmented LCD: Provides real-time visual feedback of both insulation resistance and output voltage.
• IP54-Rated, Rugged Housing: Dust-protected and splash-resistant enclosure for reliable field use.
• CAT III 600 V Safety Rating: Certified for use on distribution-level installations up to 600 V.
• Backlight & Auto Power-Off: LCD backlight for low-light conditions and automatic shut-off after 10 minutes of inactivity to conserve battery
• Low-Battery Indication: Alerts the user when battery voltage falls below operational thresholds.
• Rechargeable Li-Ion Battery: Uses an 11.1 V/2600 mAh pack for extended operation and quick recharge.
• Built-In Comparison (“PASS/FAIL”) Function: Enables go/no-go testing against a preset resistance threshold.

Specifications:

Applications:

• Electrical Equipment Maintenance.
• Industrial and Factory Inspections.
• Electrical Installation Testing.
• Household Appliance Servicing.
• Power Distribution Systems.
• Preventive Maintenance.
• Educational and Training Use.

Package Include:

• 1x User manual
• 3x Test leads (red, black, and remote-controlled)
• 2x Alligator clips
• 2x Pen-shaped test probes
• 1x Type-C USB cable
• 1x Lithium battery charger (Model XZF-A1260800-H; 12.6 V/0.8 A)
• 1x Lithium battery pack (embedded, Model UT-M19; 11.1 V/2600 mAh)
• 1x Lanyard

UNI-T UT501E Documents:

• Datasheet 
• User Manual