01925 720 001
  • Megger DET5/4D Digital Earth Tester

Megger DET5/4D Digital Earth Tester

Megger

£55.00 per week


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The Megger® DET5/4D is a fully automatic, four terminal instrument 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.

There are four ranges covering measurements from 10 mΩ to 20 kΩ. The earth resistance reading is displayed quickly, accurately and directly on a large, clear 31⁄2 digit liquid crystal display. The display indicates when there is a high test spike resistance and also when the noise interference is too high to take a valid reading. If the batteries need replacing or recharging this will also be shown on the display

Six 1,5 V AA dry cells provide power for the DET5/4D allowing 600 typical 15 second tests. This instrument has a built in battery charger that can operate from a wide range of mains voltages. The capacity of the lead acid battery enables 600 typical 15 s tests to be made from one charge.

Each instrument is built into a small, lightweight case with a handle that has been designed for outdoor use and has IP54 protection. Four large terminals allow either spade or hook connectors, 4 mm plugs or bare ended wire to be used for the test leads. Terminal Shorting bars are provided for continuity testing or measurement using the ‘dead earth’ method. A removable cover allows access to the battery compartment in the DET5/4D.

Features

  • Simple, fully automatic operation
  • Choice of three or four terminal measurement
  • Autoranging from 10 m½ to 20 k½
  • Tests to BS7671, BS7430, BS6651 and VDE 0413
  • High tolerance to spike resistance helps testing in urban areas
  • Noise rejection to 40 V
Datasheet PDF