EARTH TESTERS
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Three Terminal Ground Resistance Tester
Ground Resistance Tester

• Simple to operate
• For quick, routine single-electrode tests
• Direct readout in ohms


The Three-Terminal Ground Resistance Tester is the economical choice for electrical contractors, plant electricians, telephone and CATV technicians making routine ground resistance tests on single electrodes and other simple grounding systems. The instrument is easy to use for quick measurement of resistances from 0.5 to 500 ohms.

DET2/2 Earth tester

• Accurately measures ground resistance under
  the most demanding conditions
• High resolution — 0.001 ohms with
  autoranging
• Simple menu-driven operation

The DET2/2 digital ground resistance tester provides a wide resistance range from 0.010 ? to 19.99 kilohms for testing larger or more complex grounding systems and for difficult testing environments, with ±0.5% accuracy and 0.001 ? resolution. Microprocessor control and advanced filtering simplify testing in environments with high levels of interference.

DET3/2 Earth tester
Hand-cranked digital 3 and 4 pole earth tested

• 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 ? to 19.99 k?


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

DET5/4D and DET5/4R
Four Terminal Ground Tester

• Simple, fully automatic operation
• Choice of three or four terminal measurement
• Autoranging from 10 m? to 20 k?
• Tests to BS7671, BS7430, BS6651 and VDE
  0413
• High tolerance to spike resistance helps
  testing in urban areas
• Noise rejection to 40 V

The Megger® DET5/4D and DET5/4R are fully automatic, four terminal instruments built into a rugged, water resistant case giving protection for outdoor use. The instrument is suitable for the testing of earth electrodes and measuring earth resistivity.
Operation is started by pushing one of two buttons on the front panel; one for three terminal measurement and one for four terminal testing. All other functions of the instrument are completely automatic. The instrument checks for conditions that may cause an invalid reading during a test. The low service error and wide operating
temperature range enable accurate results to be achieved in real on-site conditions.

DET62D Earth Tester


• Weatherproof case, protection to IP54
• Simple, fully automatic operation
• Digital display
• Noise rejection to 40 V
• High tolerance to spike resistance helps
  testing in urban areas
• Earth Resistance ranges
      0.1R to 199.9R ± 2% + 3 digits
      1R to 1999R ± 2% + 3 digits
• Test frequency 128Hz

GTS-300
Safety Ground Test Set

• Fast setup
• No specialized training required
• Digital instrumentation

The GTS-300 is a two-piece test set designed to ensure the integrity of grounding systems and to test personal safety grounds. The high-current method of testing ground grid continuity and connections is a reliable, accurate method of detecting faults in the ground system.