Comprehensive Grounding System Testing with the Megger DET4 Family of Digital Ground Test Sets

Measuring ground resistivity is a method of assessing the condition of grounding systems. Ideally, the ground rod should have a low resistance path with the soil. However, when the soil loses moisture or the ground connection is faulty, the resistance may increase and impair the ground’s effectiveness. Bad ground connections can cause erratic operation of equipment and serious damage to the electrical system.

Megger offers a line of ground testers that can help you in maintenance and troubleshooting. The DET4 family of ground testers offers a comprehensive testing solution for ground rod and soil resistivity diagnostics. These testers are designed for extended operating temperatures and are rate IP54 which makes them suitable for outdoor testing. They offer various modes for ground testing like stakeless, Attached Rod Technique, 2, 3 or 4 pole, leakage current and ground noise voltage tests. Below are the specifications of each tester and included accessories.

Megger DET4TDMegger DET4TD Earth Tester

The DET4TD Earth Tester is rated to IP54 making it truly an outdoor instrument. The DET4TD Earth Tester has been designed to be easy to use, a large selector switch makes selection of 2 pole, 3 pole or 4 pole test easy with gloved hands – and the design makes the fitting of shorting links to perform 2 pole tests a thing of the past.


  • • 2, 3 and 4 point testing
    • • Selectable 25 V or 50 V output 
    • • Complete with lead and stake kit
    • • Simple one button operation
    • • Hardwearing carry case
    • • Delivered with calibration certificate


Megger DET4TCR2Megger DET4TCR2 Ground Resistance Test Kit

The DET4TCR2 Ground Resistance Test Kit is a rechargeable battery powered 4-terminal tester with selectable test frequencies, greater measurement sensitivity and attached rod technique and stakeless measurement capability.


    • • Extended test range to 200 kΩ
    • Rechargeable battery
    • User selectable test frequency and voltage
    • 2, 3 and 4 point testing at the turn of a switch
    • Attached Rod Technique (ART) enabled
    • Stakeless measurements enabled
    • Simple one button operation
    • Automatic circuit checking
    • Backlit display
    • Weather and dust proof to IP54

Get the test equipment you need from Protec Equipment Resources. You can rent for short-term, long-term or lease depending on your needs. Call a Protec expert today at 1-866-352-5550 to discuss and choose the best option for you.

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