UNI-T UT522 is a digital earth ground resistance and earth voltage tester designed for electrical systems, power distribution networks, and lightning protection equipment.
Key Specifications & Features
Resistance Range: 0 to 40Ω / 400Ω / 4,000Ω (manual range)
Earth Voltage Range: 0 to 400V (50Hz/60Hz)
Measurement Methods: Precise 3-wire testing and simple 2-wire testing
Display: Backlit LCD screen with a 4000-count readout
Memory: Stores up to 20 groups of measurement data
Safety Rating: CAT III 600V
Smart Indicators: Poor contact display ("... Ω") and over-range display ("OL")
Power Supply: Six 1.5V AA batteries (5#) with auto power-off