UNI-T UT522 Digital Earth Tester, which is used to measure ground resistance and earth voltage in electrical and lightning protection systems. [1, 2]
Key Features
Measurement Ranges: Measures earth resistance up to 4000Ω and earth voltage up to AC.
Testing Modes: Supports precise 3-wire measurements and simple 2-wire testing.
Convenience: Includes a backlit LCD screen, data hold, and auto power-off.