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Megger
DET3TC 2 & 3 Terminal Earth Tester Kit c/w Case (ART Compatible)


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.

Part Number:
DET3TC

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Manufacturer's RRP

£825.00
990.00 incl. VAT)
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Megger DET3 Series – 2 & 3 Terminal Earth Testers for Contractors

Designed for demanding fieldwork, the Megger DET3TC and DET3TD are durable digital testers engineered to deliver precise ground resistance measurements. Built with three-terminal configurations, they accurately measure resistance from 0.01 Ω to 2000 Ω and detect earth voltages up to 100 V, making them ideal for both commercial and field applications.

 

DET3TC – Advanced Testing with ART Capability

The DET3TC incorporates the innovative Attached Rod Technique (ART), allowing advanced ground testing without interrupting service connections. This powerful feature lets users test grounding systems on-site without the need to disconnect the utility connection—saving time and minimising disruption.

When paired with the optional ICLAMP, the DET3TC can also measure leakage and ground current from 0.5 mA to 19.9 A, offering detailed insights into system performance.

Each unit is packaged with a full testing kit, including test leads, earth stakes, batteries, a calibration certificate, and a durable polypropylene carry case—ready for immediate deployment.

 

Engineer using the Megger DET3 Terminal Earth Tester with a clamp meter

 

 

Key Features of the Megger DET3 Series

FeatureDetails
User-friendly operationLarge, glove-compatible selector switch
Testing methodsSupports both 2-pole and 3-pole earth testing methods
Probe verificationAutomatic verification of test probe connections
Integrated voltmeterMeasures earth voltage
Resistance range0.01 Ω to 2000 Ω
Noise rejectionHandles up to 40 V peak-to-peak
DisplayBattery level via backlit LCD
Durability & safetyIP54, CAT IV 100 V rating

 

 

Model Options: DET3TC vs DET3TD

Megger DET3TC – Full ART Ground Testing

  • Enables selective ground testing without disconnecting from utility power
  • Supports both 2-pole and 3-pole methods
  • Adjustable output voltage: 25 V or 50 V
  • Compatible with optional MCC1010 clamp for non-disruptive Fall of Potential testing
  • Kit includes: Tester, carry case, earth stakes, and test leads

 

Megger DET3TD – Straightforward Digital Testing

  • Perfect for standard ground and bonding tests
  • 2- and 3-pole testing support
  • Selectable 25 V or 50 V output
  • Designed for users needing reliable electrode testing without ART
  • Kit includes: Tester, rugged case, wire and stake set

Compatible Earth Test Kits:
ETK30, ETK50, ETK50C, ETK100, ETK100C

 

 

Why Choose ART (Attached Rod Technique)?

Traditional testing methods often require disconnecting the grounding electrode—disrupting systems and adding time. ART testing, exclusive to the DET3TC, allows for in-situ testing by measuring current flow through the electrode using a clamp-on sensor. This technique ensures only the current in the test ground is measured—bypassing parallel paths through the utility.

A built-in processor uses this measurement to calculate ground resistance following the Fall of Potential principle, as defined in IEEE Standard 81.

Benefits of ART Ground Testing:

  • No need to disconnect the system
  • Saves up to 40% of testing time
  • Provides reliable, accurate results even in complex environments

 

  

▶ Video: Unboxing The Megger DET3 Terminal Earth Tester

Video thumbnail for the DET3 2 & 3 Terminal Earth Tester

 

 

❓ Frequently Asked Questions (FAQ)

Q1: What’s the difference between the DET3TC and DET3TD?
A. The DET3TC includes ART functionality for advanced, non-disruptive ground testing, while the DET3TD is ideal for standard ground testing without ART capabilities.

Q2: Can I use these testers in high-noise environments?
A. Yes, both models reject electrical noise up to 40 V peak-to-peak for accurate results in challenging field conditions.

Q3: What’s included in the test kits?
A. Both models come with a carry case, test leads, earth stakes, and batteries. The DET3TC also supports the optional ICLAMP for current measurement.

 

Comparison Chart for: Megger DET3TC 2 & 3 Terminal Earth Tester Kit c/w Case (ART Compatible)

MEGGER DET3
DET3TDDET3TCDET14C ClampDET24C Clamp
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
Datalogging
Downloading
Dust and weatherproof to IP54
MEGGER DET SERIES
FeatureDET3TADET3TDDET3TCDET4TD2DET4TR2DET4TC2DET4TCR2
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) £45.00 ADD
1000-525 Accessory Spare 3-Terminal Lead Set - DET3TX £82.00 ADD
1000-526 Spare 4-Terminal Lead Set - DET3TX £96.00 ADD
1000-806 Spare 4-Terminal Lead Set - DET3TX £77.00 ADD
6220-804 2 Earth Spikes £16.00 ADD

 

 

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