UNI-T UT522 Earth Ground Tester measures the earth resistance of all kinds of electrical power system; electrical equipment and anti-thunder equipment. This tester from UNI-T can also measure the earth voltage. It is applicable to testing operating earth systems of smelting; communication; manufacture; fossil oil; national defense; electricity; chemical industry and construction.




Model UT522
Earth Resistance(Ω) 0~40Ω ±(2%+20)
0~400Ω ±(2%+3)
0~4000Ω ±(2%+3)
AC Earth Voltage (V) 0~400V ±(1%+6)
Frequency: 50Hz/60Hz


Display Count 4000
Manual Range
Auto Power Off About 10 minutes
Low Battery Indication
Data Hold
Data Storage 20 groups
LCD Backlight
Full Icon Display
Double Insulation Protection
Contact Badness Indication Port C or Port E don`t contact display”—Ω”
Over-Range Display Display OL
Simple 2-Wires Testing
Precision 3-Wires Testing

Device Characteristics

Power 1.5V batteries (5#) X 6
LCD Size 70.6mm X 34mm
Product Color Red and grey
Product Net Weight 560g
Product Size 160mm X 100mm X 70.5mm
Standard Accessories Batteries, carrying bag, test lead,simple test lead, test probe
Standard Individual Packing Gift box, manual
Package includes:

1x UNI-T UT522 Earth Ground Tester

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Additional information

Weight 0.1 kg


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