UNI-T UT-52 Digital Earth Resistance Tester, 2000Ω, 200V AC, 3½ Digit LCD, 2/3-Wire, Backlight, Data Hold, Auto Power Off

The UNI-T UT-52 stands apart from ordinary multimeters by focusing exclusively on earth resistance and earth voltage measurements—critical for verifying grounding systems in electrical installations, lightning protection, and industrial equipment. Unlike general-purpose meters, it employs a 2-wire or 3-wire measurement method with a 820Hz test frequency, delivering accurate readings up to 2000Ω with minimal interference. Its 3½ digit LCD with backlight ensures clear visibility in dim environments, while data hold and auto power off enhance convenience and battery life. Powered by six AA batteries, this portable tester is ready for field use, and the included test leads, auxiliary earth bars, and carrying bag make it a complete solution for electricians and maintenance technicians.

Highlights

• Earth resistance range: 0Ω to 2000Ω with ±(2%+3) accuracy on 200Ω and 2000Ω ranges
• Earth voltage measurement: 0V to 200V AC with ±(1%+4) accuracy
• 2-wire and 3-wire measurement methods for versatile grounding tests
• Large 3½ digit LCD (1999 counts) with backlight for low-light conditions
• Data hold, auto power off, low battery indication, and overload protection
• Safety rated CAT II 300V, CAT III 200V; includes test leads, auxiliary earth bars, and carrying bag

In daily use

On a typical job site, the UT-52 simplifies earth resistance testing. Connect the auxiliary earth bars and test leads, select the appropriate range, and read the stable value on the backlit display. The 820Hz test frequency minimizes interference from stray currents, ensuring reliable measurements. Data hold freezes the reading for easy recording, and auto power off conserves battery life during breaks. The included carrying bag keeps all accessories organized, making the UT-52 a practical choice for routine grounding system verification.

Full specifications

• Earth resistance range: 0Ω to 2000Ω
• Earth resistance accuracy (20Ω): ±(2%+10)
• Earth resistance accuracy (200Ω): ±(2%+3)
• Earth resistance accuracy (2000Ω): ±(2%+3)
• Earth voltage range: 0V to 200V AC
• Earth voltage accuracy: ±(1%+4)
• Display: 3½ digit LCD (1999 counts) with backlight
• Measurement method: 2-wire / 3-wire
• Test current: approx. 2mA
• Measurement frequency: 820Hz
• Data hold: yes
• Backlight: yes
• Low battery indication: yes
• Auto power off: yes
• Overload indication: yes
• Power supply: 6 x 1.5V AA batteries
• Safety rating: CAT II 300V, CAT III 200V
• Operating temperature: 0°C to 40°C
• Standard accessories: test leads, auxiliary earth bars, carrying bag

Final note

The UNI-T UT-52 is a dedicated earth resistance tester that delivers accurate and reliable grounding measurements in a portable, user-friendly package, making it an essential tool for electrical safety inspections.