Key Features:

• Measurement Ranges:

  • Earth Resistance:

    • 0~40Ω (±2% + 20 digits)

    • 0~400Ω (±2% + 3 digits)

    • 0~4000Ω (±2% + 3 digits)

  • Earth Voltage (AC): 0~400V (±1% + 6 digits)

  • Operating Frequency: 50Hz / 60Hz

• Display:

  • 4000-count large LCD with bright backlight for visibility in dark environments.

• Functions:

  • Data hold function to freeze the current reading.

  • Manual range selection.

  • Data storage (up to 20 test records).

  • Auto power-off function after ~10 minutes of inactivity.

  • Low battery indicator.

  • Over-range display (“OL”) and poor contact display (“…Ω”).

  • Full icon display and double insulation for safety.

  • Compatible with both simple (2-wire) and precise (3-wire) test setups.

• Power Supply:

  • Powered by 6 × 1.5V AA (LR6) batteries.

• Physical Specs:

  • Display Size: 70.6mm × 34mm

  • Dimensions: 160mm × 100mm × 70.5mm

  • Weight: Approx. 560g

📦 Package Includes:

• UT522 Tester Unit

• Earth test leads (standard and simple)

• Earth spikes

• Gallus (wire reel)

• Carrying bag

• User manual

• Batteries

The UNI-T UT522 is a robust, reliable tool for professionals who need accurate earth resistance and voltage readings in the field or in the lab. Its combination of precision, durability, and ease of use makes it an excellent choice for electrical engineers and technicians.