UNI-T UT275A Earth Clamp Meter – Ground Resistance Tester

The UNI-T UT275A Earth Clamp Meter is a professional electrical testing instrument designed to measure earth-ground resistance and AC current in grounding systems. It uses a clamp-based measurement method, allowing technicians to test compatible grounding loops without disconnecting the grounding conductor or installing auxiliary ground electrodes.

With an earth resistance measurement range of 0.01Ω to 1200Ω and AC current measurement up to 30A, the UT275A supports grounding inspections, electrical maintenance, and troubleshooting in industrial and commercial installations. Its Bluetooth communication capability enables compatible mobile-device connectivity, while the internal data storage function helps technicians record and review measurement results.

The instrument features a four-digit LCD, automatic ranging, a backlight, and self-calibration at startup. Its clamp design and portable construction make it suitable for field inspections in power distribution systems, telecommunications facilities, factories, and other locations where grounding performance must be assessed.

Features:

• Earth Resistance Measurement: Measures grounding-loop resistance from 0.01Ω to 1200Ω.

• AC Current Measurement: Measures AC current from 1mA to 30A.

• Clamp-Based Testing: Tests suitable grounding loops without disconnecting the grounding conductor.

• Bluetooth Connectivity: Supports wireless data communication with compatible devices.

• Data Storage: Stores up to 500 measurement records for later review.

• Automatic Ranging: Selects the appropriate measurement range automatically.

• Four-Digit LCD: Displays measurement results clearly.

• Backlit Display: Improves readability in dimly lit working environments.

• Self-Calibration: Performs a startup self-check and calibration process.

• Safety Compliance: Designed to meet the manufacturer's stated electrical safety and EMC standards.

Specifications:

• Brand: UNI-T

• Model: UT275A

• Product Type: Earth Clamp Meter / Ground Resistance Tester

• Earth Resistance Range: 0.01Ω–1200Ω

• Earth Resistance Resolution: Down to 0.001Ω

• AC Current Range: 1mA–30A

• Maximum Clamp Opening: Approximately 44.5mm

• Display: Four-digit LCD

• Data Storage: 500 sets

• Wireless Communication: Bluetooth

• Sampling Rate: Approximately 2 readings per second

• Automatic Power-Off: Approximately 10 minutes without operation

• Power Supply: 4 × 1.5V AA batteries

• Dimensions: Approximately 270 × 94 × 58.5mm

• Safety Standards: IEC 61010-1, IEC 61010-2-032, and IEC 61326, as specified by the manufacturer

• Standard Accessories: Batteries, instruction manual, and calibration resistors; confirm the supplied package contents with the seller.

Applications:

• Earth-ground resistance testing in electrical installations.

• Grounding system inspection and maintenance.

• Power distribution networks and substations.

• Industrial electrical maintenance.

• Telecommunications facilities and equipment rooms.

• Factory grounding networks.

• Electrical grounding loop troubleshooting.

• Grounding inspections at commercial buildings and service facilities.

• AC current measurement in compatible conductors.