UT572 4-Wire Ground Resistance Test Kit

The UT572 verifies grounding systems using 2-, 3-, and 4-wire earth resistance methods and adds soil-resistivity measurement — so the same kit checks an existing electrode and surveys ground for a new one. It measures across five ranges from 4 Ω to 40 kΩ and is rated CAT III 600 V.

Dual test frequencies (94 Hz / 128 Hz) and disturbance-voltage handling keep readings stable on live sites, and 20 result groups store on-board. It runs on AA batteries for field portability. It's backed by UNI-T's nearly 40 years of test-meter manufacturing.

Key Features

• 2-wire, 3-wire, and 4-wire earth resistance methods
• Soil-resistivity measurement (1 m to 40 m spacing)
• Five ranges: 4 Ω, 40 Ω, 400 Ω, 4 kΩ, 40 kΩ
• Dual test frequencies (94 Hz / 128 Hz) to resist interference
• Disturbance-voltage handling for live-site stability
• 20-group data storage
• CAT III 600 V; AA battery power

UT572 Details

2/3/4-Wire Earth Resistance

The UT572 supports the standard fall-of-potential methods — 2-, 3-, and 4-wire — so you can match the test to the site, from a quick 2-wire check to a 4-wire measurement that removes lead resistance for accuracy on low-ohm electrodes.

Soil Resistivity

Beyond electrode resistance, the UT572 measures soil resistivity over stake spacings from 1 m to 40 m — the survey you need to design a grounding system or lightning-protection scheme before it's installed.

Stable Readings on Live Sites

Dual test frequencies of 94 Hz and 128 Hz and disturbance-voltage handling reject the stray currents and noise common around energized installations, so readings stay repeatable in the field.

Field Use

Five ranges from 4 Ω to 40 kΩ cover everything from a good electrode to high-resistance soil, 20 result groups store on-board, and AA-battery power keeps the kit portable.

Applications

Earth-electrode and grounding-system verification; lightning-protection and substation ground testing; soil-resistivity surveys for new installations; and facility and contractor compliance checks on grounding.

Frequently Asked Questions