Starting at $915.00

Not in stock. Usually ships in 1-2 weeks [?]

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  • 2 and 3 point testing
  • ART (Attached Rod Technique) option
  • Test voltages (25/50 V)
  • Digital or analog display
  • IP54 rated
  • One button operation

The Megger DET3TD and DET3TC 3-terminal ground testers instrument family has two models. The DET3TD offers the digital ground testing and bond testing capabilities. The DET3TC is the new model with the capability of testing on-site grounds without disconnecting the utility connection. The DET3TC includes a current measuring function for ART (Attached Rod Technique) testing capabilities. With this added function, on-site grounds can be tested separately without having to remove the utility connection.

They are designed to meet stringent safety standards and are rated CAT IV 100V. The ground testers have been designed to be easy to use – a large selector switch makes selection of 2 or 3 pole tests easy withgloved hands – and the design makes the fitting of shorting links to perform 2-pole tests a thing of the past. A large, clear, easy to read LCD and thumb-sized test button also make the instruments particularly well suited to the outdoor conditions of ground testing. In addition to this ease of use feature, the ground tester automatically checks the connection and conditions of the P spike, C spike, and also the level of ground noise, indicating the status on the display. The instruments also include a voltmeter to enable measurement of ground voltage. They can measureresistance from 0.01 ohms to 2 kΩ. Also, to allow accurate testing in noisy environments, the instruments are capable of rejecting noise up to 40V peak to peak.

By using the optional ICLAMP with the DET3TC, the user can augment the traditional fall-of-potential measurement method with ART (Attached Rod Technique), which allows electrode testing without disconnection and also leakage current measurements down to 0.5 mA. Grounding electrodes from simple to complex systems can be tested, including:

Applications for the Megger DET3TD / DET3TC:

  • Primary and secondary electrical grounding systems
  • Utility pole grounds
  • Lightning protection systems
  • Residential grounds
  • Machinery safety grounds
  • Computer and communication system grounds
  • EMI/RFI system grounds
  • Antenna and pedestal grounds
  • CATV system grounds

The Megger DET3TD ground resistance tester ships complete with:

  • test leads
  • stakes
  • batteries
  • calibration certificate
  • polypropylene carrying case


Megger iClamp Current Probe
1000 A AC current probe with jaws capable of accommodating cables up to 52mm


Please consider these optional accessories.

Megger 6320-245 Ground Testing Kit
Electrode & Soil Resistivity stake and wire kit, winds easily, tough storage case
Megger 250579-KIT Standard Earth Testing Kit
Set of three color-coded test leads (25, 50, & 100ft), pair of 20 inch ground rods, and canvas case
Megger 250581-KIT Deluxe Earth Testing Kit
Set of three color-coded test leads (25, 50, & 100ft), pair of 20 inch ground rods, and padded case
Megger 6310-755 Earth Test Kit
Kit includes four leads, hammer, galvanized steel spikes, and a pair of spike extractors
Megger Ground Rods
Pair of ground rods available in 11, 20, or 30 inch length for Megger ground resistance testers
Megger 1000-524 Auger Spike
Easy to twist into the ground & determine insertion depth for DET3 & DET4 series ground resistance testers
Megger 1008-021 Carrying Case
Carrying pouch for MJ, BM12 & DET3 testers
Call for pricing
Megger 6220-804 Earth Spike Set
Two spikes, 200mm long, 8mm in diameter for DET3 & DET4 series ground resistance testers
Megger 6220-803 Right Angle Terminal Adapter Set
Four adapters for non standard 4mm banana wire connection for DET 3 and DET4 series ground resistance testers
Megger 250576-KIT Test Lead Set
Three color-coded test leads for Megger ground resistance testers
Megger 250586-KIT Soil Resistivity Kit
Supplemental kit containing case, rods, and test leads for Megger ground resistance testers
Megger Cable Reels
Test leads on easy-wind reels for the DET3 & DET4 series ground resistance testers
Megger 3-Terminal Lead Set
Lead set for use with DET3T series ground resistance testers
Megger 1000-435 DET Calibration Checker
25Ω plug in calibration checker for DET3 and DET4 series ground resistance meters