UNI-T UT272A Earth Clamp Meter – Ground Resistance Tester

The UNI-T UT272A Earth Clamp Meter is a professional electrical testing instrument designed to measure earth-ground resistance and loop resistance in grounding systems. Its clamp-based measurement method allows technicians to test suitable grounding loops without disconnecting the grounding conductor or installing auxiliary earth electrodes.

With an earth resistance measurement range of 0.01Ω to 400Ω, the UT272A is suitable for routine grounding inspections, electrical maintenance, and troubleshooting in industrial, commercial, and telecommunications installations. Its compact design and automatic ranging help simplify field measurements, while the four-digit LCD provides clear readings.

The instrument also includes data storage for up to 500 measurement records, data recall, a backlit display, and automatic power-off. These features make it useful for electricians, maintenance engineers, and technicians who need to evaluate grounding systems and document inspection results.

Features:

• Earth Resistance Measurement: Measures grounding-loop resistance from 0.01Ω to 400Ω.

• Loop Resistance Testing: Supports resistance testing on suitable closed grounding loops.

• Clamp-Based Measurement: Tests compatible grounding systems without disconnecting the grounding conductor.

• Automatic Ranging: Selects the appropriate resistance range automatically.

• Data Storage: Stores up to 500 measurement records.

• Data Recall: Allows saved readings to be reviewed on the instrument.

• Four-Digit LCD: Displays measurement results clearly.

• Backlit Display: Improves visibility in low-light working conditions.

• Automatic Power-Off: Helps conserve battery power when the instrument is idle.

• Interference Resistance: Designed to maintain stable measurements in typical electrical environments.

Specifications:

• Brand: UNI-T

• Model: UT272A

• Product Type: Earth Clamp Meter / Ground Resistance Tester

• Earth Resistance Range: 0.01Ω–400Ω

• Measurement Method: Clamp-based inductive measurement

• Resistance Resolution: Range-dependent, from 0.01Ω

• Maximum Clamp Opening: Approximately 44.5mm

• Display: Four-digit LCD

• Data Storage: 500 readings

• Data Recall: Supported

• Bluetooth: Not supported

• AC Current Measurement: Not supported

• Sampling Rate: Approximately 2 readings per second, according to the shared UT272A/UT275A specification

• Automatic Power-Off: Approximately 10 minutes without operation

• Power Supply: 4 × 1.5V AA batteries

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

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

Applications:

• Ground resistance testing in electrical installations.

• Inspection and maintenance of grounding networks.

• Industrial and commercial electrical maintenance.

• Telecommunications facilities and equipment rooms.

• Power distribution systems and electrical infrastructure.

• Factory grounding systems.

• Lightning protection system inspections.

• Troubleshooting grounding loops.

• Electrical maintenance documentation and periodic testing.