UT520 series grounding resistance tester with backlit display and battery low voltage,
 keep and store the data, automatic shutdown function to save power. Three line can be used as precise measuring, also can make a simple two line measurement.
Can be applied to measure all kinds of electric power system, electrical equipment, lightning protection equipment of the grounding system, grounding resistance grounding voltage measurement. Applicable to the smelting, telecommunications, manufacturing, oil, defense, power, chemical industry, construction and other operations of the grounding system tests.

UNI-T UT522 Earth Ground Tester for ground resistance & voltage measurements.

FEATURES
Functions:
earth resistance tester
  earth voltage testing
Data Hold function
Reinforced insulation protection
Over-range indication
Data logging for 20 data sets
Battery check function
Display backlight
Sleep mode
Precision 3-Wires Testing
Double Insulation Protection.

PACKAGE CONTENTS
Earth Ground Tester UNI-T UT522 — 1 pc.
Battery — 6 pcs.
Three Test Lead (Green + Yellow + Red) — 1 set
Simple Test Lead — 1 pc.
Test Probe — 2 pcs.
User Manual — 1 pc.
Carrying Bag — 1 pc.