Motwane DECT-2 Digital Earth Clamp Tester

The Motwane DECT-2 Digital Earth Clamp Tester is a big technical breakthrough over the old soil-stakes technique of testing, which is time consuming. The DECT-2 provides direct earth resistance and earth bond integrity measurements to field service engineers and industrial maintenance teams using sophisticated clamp-on, stakeless testing technology. It greatly reduces field survey times by eliminating the need to isolate the earth pit or drive auxiliary ground rods into the soil, while providing complete safety for the operator and the electrical system under examination. The DECT-2 has a distinctive long jaw profile, double insulation and strong protection against external electromagnetic fields, to provide rock-solid, reliable readings even in very contaminated electrical situations.   Model Details Model Name/Number: DECT-2 Manufacturer Part Number (MPN): DECT2 (SKU: ME.EL.EA.00051) Product Type: Handheld Clamp-On Earth/Ground Resistance Tester   Technical Specifications Specification Parameter Technical Data Values Resistance Measurement Range 0.01 Ohm to 1200 Ohm Maximum Resolution 0.001 Ohm Jaw Size Opening 65 mm x 32 mm (Elongated Rectangular Profile) Display Type 4-Digit LCD (47 mm x 28.5 mm) Memory Storage Capacity Up to 99 manual records Measurement Response Time 0.5 seconds Test Frequency Greater than 1 kHz Current Leakage Detection Range Up to 20 A AC Configurable Alarm Thresholds 1 Ohm to 199 Ohm (Audible & Visual alerts) Electrical Insulation Rating Double Insulation, CAT II (150 V max safety working limit) External Magnetic Field Immunity Less than 40 A/m External Electric Field Immunity Less than 1 V/m Power Supply 6 VDC (4 x 1.5 V AA Alkaline Batteries) Auto Power-Off Timer Approximately 5 minutes of inactivity Operating Temperature / Humidity -10 degrees C to 55 degrees C / 10% to 90% RH Dimensions (L x B x H) 285 mm x 85 mm x 56 mm Net Weight 1160 grams (including batteries)   Features and Benefits Stakeless Clamp-On Technology Quickly collect ground route resistance measurements without removing the ground rod or de-energizing power systems. Smart Shielding Array: Internal shielding is sophisticated for excellent rejection of external electric and magnetic fields, so you get good accuracy even near heavy industrial machinery. Onboard Datalogging Storage: Built-in memory records up to 99 unique data points for efficient field surveys and quick playback. Engineered Long-Jaw Profile: Unique 65 mm × 32 mm jaws are easily able to fit large, flat steel or copper grounding strips that regular circular clamps cannot.   Applications Electrical Grid & Rod Verification Testing of the quality, baseline health and integrity of sub-station ground grids and individual electrical rods. Industrial Plant Maintenance: Identify earth fault loops, loose contact terminations or physical deterioration in copper earthing strips and cables. Telecom Ground Systems: Secure, parallel path checks for telecommunication towers, cell sites, and remote hubs.   Part Number Cross-References Motwane Internal Identifier: DECT-2 / DECT2 Industrial Distributor SKU: ME.EL.EA.00051 Alternative Series Reference: Motwane DECT Series Grounding System Clamps   Guide from our expert engineer: Verify the Loop Structure: A clamp tester measures the resistance of the entire loop, not just the single ground rod soil resistance. If you are clamped onto a single rod that is totally isolated from any grid network, the display will read “OL” (Over Loop / Open Circuit). Ensure you have a closed electrical loop when executing stakeless testing. Watch for Stray Noise Currents: If the meter registers a high noise symbol, check for severe AC leakage current running down your earthing strips. The DECT-2 filters out high-frequency interference efficiently, but excessive power-frequency leakage currents ($>20\,\text{A}$) can saturate the clamp core. Clean the jaw mating surfaces regularly with a soft lint-free cloth to maintain precise core alignment.