Megger DET2/3 Advanced Earth (Ground) Tester

The Megger DET2/3 automatic earth test instrument is designed to measure earth Electrode Resistance and Soil Resistivity, with highly accurate results. It provides a full range of test methods and excels at the four terminal method of measurement, which eliminates the resistance of the current circuit from the measurement. The DET2/3 can be used on large or more complex earth systems, which include communications earth systems and difficult test environments. It can be used to test in accordance with BS 7430 (Earthing), BS-EN-62305 (Lightning Protection), BS-EN-50122-1 (Railway Applications) and IEEE Standard 81. The DET2/3 can be used in agricultural locations (as per IEC 61557-5) where, to comply with the standard, the output voltage must be set to 15 V. It can also set to 15 V when risk assessment determines that a 50 V test voltage is too high. The DET2/3 is sealed to IP54 standard, which provides weatherproofing during operation (case lid open). When the case lid is closed its protection standard is to IP65 (water and dust damage). The DET2/3 is powered by an internal rechargeable battery which has a long usage period. The battery is recharged with an external power supply unit. FEATURES High resolution of 1 mΩ, ideal for large earth (ground) systems. Versatile test modes. High accuracy for earth (ground) electrode grid and soil resistivity tests. Rechargeable battery power that can last all day with a fast re-charge (up to 10 hours). Robust instrument with IP65 protection. Automatic test frequency selection, with filters and high current features. Diagnostic trace display. Data storage. Large colour display that shows numeric and graphical results. Megger DET2/3 Earth (ground) Tester Introduction Megger DET2/3 Specifications 2, 3 and 4 pole resistance measurements Range 0.001 Ω to 20.00 kΩ auto range. Display Four digit display. Accuracy at 23 °C +2 °C +0.5% of reading +2 digits. 3P +10 mΩ. 4P +20 mΩ. Test standards BS 7430 (Earthing) BS 62305 (Lightning) BS EN50122 (Railway) IEEE Standard 81. Test frequency 10 Hz to 200 Hz in steps of 0.5 Hz. Test current 50 mA max. Max. output voltage Less than 50 V rms. Maximum interference Up to 50 V pk to pk. Temperature coefficient < +0.1% per °C over operating temp. 3 and 4 pole ART (selective) resistance measurements Range 0.01 Ω to 10.00 kΩ Auto range. Accuracy +5% of reading +3 digits at 23 °C +2 °C. Stakeless resistance measurement Range 0.01 Ω to 200 Ω. Accuracy +7% accuracy, +3 digits. Leakage current Range 0.00 A to 2.00 A. Accuracy +5% (+3 digits). Instrument specifications Display 4.3 inch QWVGA, daylight viewable backlit colour. Operating temperature -10 to 40 °C. Storage temperature -20 to 60 °C. IP rating IP54 operational (lid open) IP65 storage (lid closed). Measurement rating CAT IV 300 V. Power supply Internal Li-ion battery or external 12-18 V, 65 W, DC supply. Battery life Up to 10 hrs use. Battery charging time Fast recharge to 50%, 3 hrs for 100%. Safety Meets IEC 61010. EMC Meets IEC 61326. Data storage On board 500 record storage downloadable as *.txt. Dimensions L 315 x W 285 x H 181 mm (12.4 x 11.2 x 7.1 in). Weight 4.5 kg (9.9 lb). Megger DET2/3 warranty 2 year, conditional upon registering.

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