Digital Earth Tester UNI-T UT521 Ground Insulation Meter Resistance

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- Equipped with large LCD display with back-light, convenient to operate in the dark.
- Various functions such as over range indication, test connection alarm, TEST button for fast capture of measurement values, data hold, auto power off/battery check, earth voltage measurement.
- 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.
- The Tester includes all hardware necessary to measure earth ground in 3 ranges from 20 to 2000 Ohm, easy to use.
- Lightweight design and comes with storage case, easy to carry and great for fieldwork.


Model: UT521
Range/Accuracy: Ω~20Ω/±(2%+10) Ω~200Ω/±(2%+3) 0~2000Ω/±(2%+3)
AC Earth Resistance (V) 0~200V/±(1%+4) Frequency: 50Hz/60Hz
Auto Power Off: About 10 minutes
Low Battery Indication: yes
Data Hold: yes
Data Storage: 20
LCD Backlight: yes
Full Icon Display: yes
Double Insulation Protection: yes
Contact Badness Indication
Product Size: 160×100×70.5mm/6.3×3.9×2.8in
Port C or Port E don't contact display"---Ω"
Overload Indication
Display "OL": yes
Simple 2-Wire Testing: yes
Accurate 3-Wire Testing: yes
General Characteristics
Power: 1.5V AA Batteries × 6(not included)
LCD Size: 70.6×34mm
Product Net Weight: 560g
Standard Carton Gross Weight: Approx.2112g