UT520 series earth resistance tester has the functions of backlight display, low battery display, data hold, data storage, auto power off and power saving. It can not only be used for accurate three-wire measurement but also simple two-wire measurement.
It is applicable to measuring the earth resistance of all kinds of electrical power system, electrical equipment and anti-thunder equipment. It 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
UNI-T UT522 Digital Earth Ground Resistance Tester AC Earth Resistance Tester
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:yes

Features
Display Count:4000
Manual Range:yes
Auto Power Off:About 10 minutes
Low Battery Indication:yes
Data Hold:yes
Data Storage:20 groups
LCD Backlight:yes
Full Icon Display:yes
Double Insulation Protection:yes
Contact Badness Indication:Port C or Port E don`t contact display”---Ω&rdquo
Over-Range Display:Display OL
Simple 2-Wire Testing:yes
Precision 3-Wire Testing:yes
Power:1.5V batteries (5#) X 6(Not included)
LCD Size 70.6mm X 34mm
Product Color Red + grey
Product Net Weight 560g
Product Size 160mm X 100mm X 70.5mm