UNI-T UT522 Ground Resistance Meter 0.01 to 2000 Ohm

The UNI-T UT522 is a professional digital ground resistance meter engineered for high-precision electrical testing. This robust device provides reliable measurements for earth resistance and earth voltage, making it an essential tool for technicians and engineers working with complex electrical infrastructures. With its intuitive interface and reliable performance, the meter ensures accurate diagnostics of grounding systems across various industrial and residential applications.

Advantages

The device offers exceptional measurement accuracy across a wide range from 0.01 to 2000 Ohm, ensuring versatility for different soil conditions and grounding setups. Its integrated data storage capability allows users to save up to 20 sets of measurement results, facilitating efficient documentation and analysis. The inclusion of a data hold function and a clear display makes it easy to capture readings even in challenging field environments, while the durable construction ensures long-term reliability during frequent use.

Suitable for

• Testing grounding systems in power distribution networks
• Verifying electrical installations in residential and commercial buildings
• Inspecting lightning protection systems
• Conducting routine maintenance on electrical grounding grids

This meter may not be suitable for high-voltage transmission line testing where specialized high-current injection equipment is required. It is also not designed for measuring insulation resistance or continuity in non-grounding related electrical circuits.

Key specifications

• Measurement range: 0.01 to 2000 Ohm
• Earth voltage measurement capability
• Data storage: Up to 20 sets
• Data hold function
• Digital display with backlight

To use the UNI-T UT522, connect the test leads to the grounding electrode and the auxiliary earth spikes according to the standard three-pole measurement method. Ensure the area is clear of debris and that the spikes are driven firmly into the soil to achieve a low-resistance contact. Select the appropriate resistance range on the device, initiate the measurement, and record the value once the reading stabilizes on the screen. Use the data storage function to save results for later review.

What to consider before purchase

• Ensure you have the necessary auxiliary earth spikes and test leads for your specific site requirements
• Verify that the measurement range covers the expected resistance values of your grounding system
• Consider the soil conditions at your testing site, as dry or rocky soil may require additional preparation for accurate readings

Usage recommendations: Always perform a visual inspection of the grounding system before testing. Ensure that all connections are clean and secure to prevent measurement errors. Regularly calibrate the device to maintain accuracy over time.