Megger DET3TD 3-Terminal Earth Resistance Tester

Overview

The Megger DET3TD is a robust, easy-to-use earth resistance tester designed for measuring the resistance of earth electrodes and grounding systems. It performs 2-pole and 3-pole (fall-of-potential) measurements across a range of 0.01 Ω to 2000 Ω, making it ideal for electrical installers, utilities and test engineers who need dependable earth-electrode results in the field.

Key features of the Megger DET3TD earth tester

• Wide resistance range from 0.01 Ω to 2000 Ω with 2% ±3 digit accuracy
• Selectable 25 V or 50 V test output for flexibility across soil conditions
• 128 Hz test frequency with strong rejection of stray noise (40 V peak-to-peak)
• Earth voltage measurement 0–100 V a.c. to check for hazardous stray voltages before testing
• Rugged IP54 weatherproof case built for outdoor site use
• Simple 8 × AA battery operation with automatic checks for good measurement conditions

DET3TD earth electrode testing applications

The DET3TD is used for commissioning and maintenance testing of earth electrodes, lightning protection grounds, substation earths and equipment grounding systems. Its 2-pole and 3-pole methods suit both quick spot checks and full fall-of-potential surveys, giving electrical contractors and facilities teams a reliable way to verify that grounding meets installation requirements.

What’s in the box

• Megger DET3TD earth resistance tester
• Test leads and probes / accessories as supplied with the selected kit
• 8 × AA batteries
• User guide

DET3TD vs DET3TC

The DET3TD provides 2-pole and 3-pole earth resistance testing with earth voltage measurement. If you also need the Attached Rod Technique (ART) with a current clamp and earth current measurement for testing electrodes without disconnecting them, the Megger DET3TC adds those capabilities.

Why buy the Megger DET3TD from MME in the UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) supplies genuine Megger DET3TD earth testers across Dubai, Abu Dhabi and the wider UAE, with knowledgeable technical support and fast local delivery. Contact us for pricing, availability and application advice.