UNI-T UT521 Digital Earth Testers

UNI-T UT521 Digital Earth Testers

The UNI-T UT521 Digital Earth Tester is a reliable and user-friendly instrument designed for accurate earth resistance measurements in various electrical systems. It supports both 2-wire and 3-wire testing methods, making it versatile for different grounding setups. This flexibility allows for precise measurements in power distribution systems, lightning protection installations, and general electrical equipment grounding.

Key features of the UT521 include a manual range selection, enabling users to set measurement ranges according to specific testing requirements. The device is equipped with a data hold function, allowing users to freeze the displayed measurement for convenient reading and recording. An LCD backlight ensures visibility in low-light conditions, and the auto power-off feature conserves battery life by turning off the device after a period of inactivity.

The UT521 is designed with double insulation protection, enhancing user safety during operation. It also provides clear indications for poor contact and over-range situations, displaying “…Ω” and “OL” respectively, to alert users of measurement issues. A low battery indication ensures that users are aware when the battery needs replacement, preventing unexpected power loss during critical measurements.

Physically, the UT521 is lightweight and compact, making it convenient for fieldwork and on-site testing. Its robust design ensures durability in various working environments. The tester comes with essential accessories, including test leads and earth spikes, providing users with the necessary tools for immediate operation.

In summary, the UNI-T UT521 Digital Earth Tester offers a combination of accuracy, safety, and convenience, making it an ideal choice for professionals involved in electrical installation, maintenance, and safety inspections.

Features:

• Measurement Methods: Supports both 2-wire and 3-wire earth resistance measurements, providing flexibility for various testing scenarios.
• Manual Range Selection: Allows users to manually select measurement ranges, enhancing control over testing parameters.
• Data Hold Function: Enables users to freeze the current measurement on the display for convenient reading and recording.
• LCD Backlight: Equipped with a backlit display, ensuring visibility in low-light conditions.
• Auto Power Off: Conserves battery life by automatically turning off the device after a period of inactivity.
• Display Indicators: 
  – Poor Contact Display: Shows “…Ω” when there’s poor contact during measurement.
  – Over-Range Display: Displays “OL” when the measurement exceeds the maximum range.
  – Low Battery Indication: Alerts users when the battery voltage is low, prompting timely replacement.
• Safety Features: Designed with double insulation protection, enhancing user safety during operation.
• Certifications: Complies with international safety standards, holding CE and UKCA certifications.

Specifications:

Applications:

• Electrical Installations.
• Lightning Protection Systems.
• Substations and Power Distribution Systems.
• Telecommunication Installations.
• Maintenance and Inspection.
• Solar Power Systems.
• Industrial Equipment Grounding.
• Educational and Research Labs.

Package Include:

• 1× UNI-T UT521 Digital Earth Tester
• 1× Green Test Lead (5m)
• 1× Yellow Test Lead (10m)
• 1× Red Test Lead (20m)
• 2× Auxiliary Earth Stakes
• 1× Set of Simple Test Leads with Alligator Clips
• 6× 1.5V AA Alkaline Batteries
• 1× Carrying Bag
• 1× English Manual

UNI-T UT521 Documents:

• Datasheet 
• User Manual