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DET3TD 2 & 3 Terminal Earth Tester Kit c/w Case

The Megger DET3 2 & 3 Terminal Earth Tester Contractor Series, DET3TC & DET3TD are easy to use & essential for all ground stake testing needs. Both feature a large, clear, easy to read LCD display.

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714.00 incl. VAT)
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Megger DET3 2 & 3 Terminal Earth Tester - Contractor Series

The Megger DET3 TD and DET3 TC are three-terminal digital models designed to measure ground resistance from 0.01 Ω to 2000 Ω and earth voltages up to 100 V.

The DET3TC includes Attached Rod Technique (ART) capability.  This added function allows the testing of on-site grounds separately without having the remove the utility connection.  With the optional ICLAMP, it will measure ground current from 0.5 mA to 19.9 A and leakage current down to 0.5 mA.

Each instrument includes everything you need to test; test leads, stakes, batteries, calibration certificate and rugged polypropylene carry case. 


▶ Megger DET3 What‘s in the box?:


Megger DET3 Key Features:

  • Easy to use
  • Large selector switch - Selection of 2 / 3 pole testing easy with gloved hands 
  • Ground tester automatically checks the connection / condition of the P and C spike
  • Included voltmeter allows ground voltage measurement
  • Resistance from 0.01 Ω through to 2000 Ω
  • Earth voltages up to 100 V
  • Accurate testing in noisy environments - Rejects noise of up to 40 V peak to peak
  • LCD displays battery status
  • Safety rated: IP54 CAT IV 100 V


Options for the DET3 Contractor Series Include:

  • Megger DET 3TC: capable of testing on-site grounds without disconnecting the utility connection
    • ART or selective three pole earth testing kit
    • 2 and 3 pole testing
    • Selectable 25 V or 50 V output
    • Optional MCC1010 clamp, allows fall of potential testing without the need to disconnect the electrode under test

Includes: Megger DET3TC Earth Tester, Hard Carry Case, Stake and Wire Kit


  • Megger DET 3TD: for basic requirements it provides digital ground testing and bond test capabilities
    • Three pole earth testing kit
    • 2 and 3 pole testing
    • Selectable 25 V or 50 V output
    • The complete kit for customers wishing to conduct earth electrode testing using the 2 and 3 pole techniques

Includes: Megger DET3TD Earth Tester, Hard Carry Case, Stake and Wire Kit


Compatible Earth Test Cables and Spikes Kits

Megger DET3 Compatible Earth Test Cables and Spikes Kits:

ETK30, ETK50, ETK50C, ETK100, ETK100C

Learn more about the ART of ground testing!

Ground testing using the ART method is more convenient and reduces testing time.

Model DET3TC includes the additional testing capability called the ART (Attached Rod Technique) method.

A nagging problem with traditional ground testing has been the requirement to disconnect the utility connection. Using the ART method you can reliably measure a grounding electrode while still connected and prove it!

Here’s how it works.

A current clamp, connected below the point of separation of the parallel test currents, measures only the current flowing through the test ground, not that going back through the utility.  This current value is then used by the built-in microprocessor to calculate ground resistance, strictly in accordance with Fall of Potential and supported by IEEE Standard 81.

That’s why using the ART ground testing method is more convenient and significantly reduces your testing time as much as 40%!


Comparison Chart for: Megger DET3TD 2 & 3 Terminal Earth Tester Kit c/w Case

Stakeless testing
3-wire testing
2-wire testing
ART (Attached Rod Technique) enabled
Resistance range Ω0.01 to 20000.01 to 20000.05 to 15000.05 to 1500
Earth Current range (with optional clamp)0.5 mA to 19.9 A0.5 mA to 35 A0.5 mA to 35 A
Earth Voltage range0 to 100 V0 to 100 V
Digital Display
Dust and weatherproof to IP54
Automatic C stake check
Automatic P stake check
Manual P stake check
Automatic noise check
Manual noise check
Noise rejection (40 V pk-pk)
Variable frequency test
2-wire test
3-wire test
4-wire test
2 kΩ range
20 kΩ range
200 kΩ range
No disconnect testing (ART)
Stakeless measurement
Voltmeter (ground noise voltage measurement)
Current meter
LCD display
Backlit display
Moving coil meter
IP54 rated
EN61010-1 100V CAT IV
Built-in battery charger


Accessory Code Description Price (Ex VAT)
1000-524 Auger Style Spike (1 off) (As supplied in Prof ET kit) £38.00 ADD
1000-525 Accessory Spare 3-Terminal Lead Set - DET3TX £65.00 ADD
1000-526 Spare 4-Terminal Lead Set - DET3TX £82.00 ADD
1000-806 Spare 4-Terminal Lead Set - DET3TX £66.00 ADD
6121-119 Reel of Cable (50 m) Unterminated £88.00 ADD
6220-803 4 Right Angled Adaptors for Non Standard (4mm banana) Wire Connection price on request
6220-804 2 Earth Spikes £13.00 ADD
AVTM25-TA Getting Down to Earth Booklet £24.00 ADD