Descripción
Overview
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
Which earth resistance methods does the UT572 support?
2-wire, 3-wire, and 4-wire fall-of-potential methods.
Can it measure soil resistivity?
Yes — over stake spacings from 1 m to 40 m, for grounding-system design.
Does it work near energized equipment?
Dual test frequencies and disturbance-voltage handling keep readings stable around stray currents and noise.
Specifications
| Max Resistance | 4 Ω / 40 Ω / 400 Ω / 4 kΩ / 40 kΩ |
| Accuracy | ±(3% + 5) to ±(3% + 15) depending on range |
| Disturbance Voltage | 50 V DC / 40 Hz to 500 Hz AC |
| Disturbance Frequency | 40 Hz to 500 Hz |
| Soil Resistivity | 4 Ω / 40 Ω / 400 Ω / 4 kΩ / 40 kΩ (1 to 40m spacing) |
| Earth Resistance Methods | 2-Wire, 3-Wire, 4-Wire |
| Test Frequency | 94 Hz / 128 Hz |
| Data Storage | 20 groups |
| CAT Rating | CAT III 600 V |
| Display Type | LCD |
| Battery | 1.5 V LR6 ×8 |
| Weight | 1.1 kg |
| Dimensions | 210 × 175 × 90 mm |
Documentation
Payment & Security
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