The UNI-T UT575B Double Clamp Multifunction Earth Tester is a professional grounding system test instrument designed for comprehensive earth resistance, grounding system, soil resistivity, earth voltage and earth current measurement.

Unlike conventional earth resistance testers, the UT575B supports multiple testing methods including 2-wire, 3-wire, 4-wire, selective and double-clamp measurement, allowing technicians to select the most appropriate method for the grounding system being tested.

The double-clamp method is particularly useful for testing suitable grounding systems without disconnecting the earth conductor or installing auxiliary earth stakes, helping reduce testing time and disruption at operational sites.

With earth resistance measurement up to 300kΩ, soil resistivity measurement up to 9000kΩm, AC earth current measurement up to 600A, automatic interference frequency selection, 70mm clamp capacity and storage for up to 2,000 measurements, the UT575B is ideal for utilities, substations, telecommunications, rail, renewable energy, industrial facilities and electrical contractors.