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Catalog:Ground Resistance Testers 3-4 Pole 
Biddle MEGGER DET3/2 Digital Ground/Earth Tester Cat-250302 Description Click here to view full-pdf specification sheets The MEGGER ® DET3/2 Digital Earth Three- or four-terminal measurement selected by a switch 50 volt maximum output voltage for safety and convenience Direct-reading 3 1/2-digit L.C.D. Four ranges covering measurements from 0,01 W to 19,99 k W The MEGGER DET3/2 Digital Earth Tester is a compact instrument designed to measure earth electrode resistance and soil resistivity. The instrument uses the four-terminal method of measurement, in which the resistance of the current circuit does not affect the reading. The instrument circuit has been designed so the resistance of the potential circuit also does not affect the measurement. Pressing a latchable button converts the instrument from its four-terminal measurement mode to a three-terminal one. The reversing d.c. test current has a frequency of 128 Hz, which avoids possible interference from other 50 and 60 Hz stray currents in the vicinity of the earth electrode under test. In the interests of safety, the maximum test voltage has been limited to 50 V. Applications The DET3/2 Digital Earth Tester is a reliable instrument, able to measure the earth resistance of both simple and complex electrode systems. They may be used to test in accordance with BS 7430 (1991), BS7671, the IEE wiring regulations, NFC15-100, IEC364 and German specification VDE 0413 Part 7 (1982). The instrument is suitable for soil resistivity measurements, which are used to establish the optimum earth electrode system design and location, to avoid expensive reworking of electrical installations. It is also suitable for performing archeological and geological investigations. Features • Direct indication of noise and high spike resistance (current and potential) • Comply with the testing require-ments of British and VDE spec-ifications • Powered by a hand-cranked gen-erator for field independence Specifications Please see pdf. for more detailed specifications Earth Resistance Ranges 0,01 to 19,99 ½ 0,1 to 199,9 ½ 1,0 W to 1,999 k½ 10 ½ to 19,99 k½ Accuracy (23° C ±2° C) ±2% of reading ±3 digits Total Service Error: ±5% of reading ±3 digits Comply With Standards BS 7430 VDE 0413 Part 7 (1982) Test Frequency 128 Hz ±0,5 Hz Test Current 20-Ohm Range: 10 mA a.c. rms 200-Ohm Range: 1 mA a.c. rms 2- and 20-k½ Ranges: 100 µA a.c. rms Test current (= short-circuit current) is constant throughout the range. Interference Interference voltages of 20 V ±5% peak-to-peak, 50 Hz in the potential circuit will have a maximum effect of ±1% on the reading obtained for the 20 ½ to 2 k½ ranges. For the 20 k½ range, this interference voltage is reduced to 16 V ±1,0 V peak-to-peak at full-scale deflection. Ordering Details Digital Earth Tester DET3/2 Included Accessories Right-angled terminal adaptors to enable test leads with spade connectors, as in the accessory kit, or test leads with bare ends to be used (4) Operating instruction book Optional Accessories  Click here to purchase accessories Please call 1800 783 6664 for any items not listed Model Digital Earth Tester ....DET3/2 Please order from the menu below
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