UT521 Earth Resistance...



UT520 series can perform precise 3-wire and simple 2-wire earth resistance measurement for power and electrical systems, lightning protection equipment, and ground system of all electrical equipment. This series is UNI-T’s introductory earth resistance tester with high economic value. Its lightweight design is convenient for fieldwork.


1. Over range indication, test lead connection alarm

2. TEST button for fast capture of measurement values

3. 20-group data storage/recall

4. Backlight

5. Data hold

6. Auto power off/battery check

7. Earth voltage measurement

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