Megger DET2/3 Auto Earth Ground Tester

Megger DET2/3 Auto Earth Ground Tester

The Megger DET2/3 Auto Earth Ground Tester is a portable instrument used to measure earth electrode resistance and soil resistivity. These measurements help electrical professionals evaluate grounding systems and plan new installations. Its high resolution of 1 milliohm makes it useful for testing large grounding networks with very low resistance values.

When testing earth resistance, the DET2/3 applies a test signal and measures the electrical response to calculate resistance. It supports two-, three-, and four-pole testing, along with selective and stakeless methods when fitted with the appropriate accessories. This flexibility allows technicians to choose a method suited to the grounding arrangement and site conditions.

The tester also measures soil resistivity, which describes how strongly soil resists electrical current. It can calculate results using the Wenner or Schlumberger method, helping engineers assess ground conditions before selecting electrode locations and designs. These measurements are valuable when planning grounding systems for electrical facilities, communications installations, and lightning protection.

To work in electrically noisy environments, the DET2/3 automatically searches for a test frequency with lower interference. Adjustable test settings and filtering help improve measurement stability, while a live graphical trace lets users examine noise and changing readings. Its large color display presents both numerical results and diagnostic information.

Designed for field use, the DET2/3 combines rechargeable battery power, a rugged enclosure, and internal result storage. Measurements can be exported through USB for documentation and analysis with compatible software. Together, these functions help technicians investigate grounding problems, compare results over time, and maintain organized records of installation and maintenance tests.

Features:

• Earth resistance testing: Supports two-, three-, and four-pole measurement methods.
• High-resolution measurements: Provides resolution down to 1 milliohm (0.001 Ω).
• Soil resistivity testing: Calculates results using Wenner and Schlumberger methods.
• Selective testing (ART): Tests individual earth paths using compatible clamp accessories.
• Stakeless testing: Supports clamp-based measurements on suitable grounding systems with the required accessories.
• Continuity and bonding tests: Checks resistance in grounding conductors and connections.
• Leakage current measurement: Available with a compatible current clamp.
• Automatic frequency selection: Finds a test frequency with lower electrical interference.
• Adjustable filtering and test settings: Helps stabilize measurements in noisy environments.
• Live diagnostic trace: Displays measurement variation and electrical noise graphically.
• Large color display: Shows numerical readings, graphs, and test information.
• Internal data storage: Saves results for later review.
• USB export: Transfers results to a USB drive or compatible PC software, including PowerDB.
• Rechargeable battery: Provides up to approximately 10 hours of use, depending on conditions.
• Rugged construction: Megger lists IP65 protection.