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Megger DET2-3 Advanced Earth Ground Tester 1008-942

The DET2/3 is a reliable instrument for use on large or more complex earth systems, which include communications earth systems and difficult test environments.

Important Calibration Information

This instrument comes with a manufacturers calibration certificate.
Please see 'Calibration Options' in the description for more details.

Next Day Delivery (subject to availability)

£3,345.00 excluding VAT £4,014.00 including VAT @ 20%
  • Data Storage
  • Large colour display
  • Range: Automatic 0.01 Ω to 1.0 kΩ
  • Rated IP65*
  • Resolution 1 mΩ
  • Versatile test modes
  • Downloadable
  • FreeDelivery
  • 30DayMoneyBack
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Megger DET2-3 Advanced Earth Ground Tester 1008-942

High resolution of 1 mΩ, ideal for large earth (ground) systems

The Megger® DET2/3 automatic earth (ground) test instrument is robust, compact and designed to measure earth Electrode Resistance and Soil Resistivity. It provides a full range of test methods and excels at the four terminal method of measurement, which eliminates the resistance of the current circuit from the measurement.

The DET2/3 is a reliable instrument for use on large or more complex earth systems, which include communications earth systems and difficult test environments. It can be used to test in accordance with BS 7430 (earthing / grounding), BS-EN-62305 (Lightning Protection), IEEE Standard 81 and Railway Applications. Soil Resistivity measurements are used to establish the optimum electrode design and site, as well as archaeological and geological investigations.

*Important Calibration Information:

This instrument comes complete with the manufacturers calibration certificate. Please be aware that these certificates are generic and may also be time lapsed.
If you would prefer a personalised full traceable calibration certificate applied to the equipment before dispatch, then please select this option from the drop-down menu above, an additional calibration charge will apply.

Megger DET2/3 Comes Supplied With:

  • Megger DET2/3
  • Charger
  • User Guide
  • Calibration Checker, Instrument
  • Pouch
  • Carry Strap

Key Features:

  • High resolution of 1 mΩ, ideal for large earth (ground) systems
  • Versatile tests modes
  • High accuracy for earth (ground) electrode grid and soil resistivity tests
  • Rechargeable battery power that can last all day with a fast re-charge (up to 10 hours)
  • Robust instrument with IP65 protection
  • Automatic test frequency selection, with filters and high current features
  • Diagnostic trace display
  • Data storage
  • Large colour display that shows numeric and graphical results
  • Optional earth testing kit (ETK) available

High accuracy earth (ground) measurements

The DET2/3 provides accurate 1 mΩ resolution measurements of earth (ground) electrode resistance. With its microprocessor controlled system it provides a flexible and ‘user-friendly’ approach to earth tests by the provision of excellent error detection capabilities and full test information shown on a large colour display. Test frequency, test voltage and filtering can be quickly and easily adjusted so that adverse conditions, which can influence the test, can be overcome.

A wide band of test frequencies, with a resolution of 0.5 Hz, can be used to eliminate errors caused by noise in the earth. The DET2/3 also includes an automatic frequency selection feature that scans for frequencies with the lowest noise level and then runs a test at that frequency.

Continuity measurements and bonding

  • Single resistance range: One fully automatic range from 0.01 Ω to 1.0 kΩ
  • Display: Three digit display n Accuracy: ±3% (±2 digits)
  • Short circuit current: 200 mA continuity test currents
  • Lead null: Lead resistance compensation (NULL) operates with a lead resistance up to 10 Ω

Trace display and data storage

Utilising the latest processors, the DET2/3 can provide a live trace of its measurements, which graphically shows the amount of noise from the system under test - a powerful diagnostic tool for the expert earth (ground) test engineer. Use of the latest processors and a large internal memory allows for immediate calculations of resistivity (Wenner or Schlumberger method) and the ability to save a complete day’s worth of test results. Test result data can be downloaded directly through a USB flash drive or straight to a Windows PC running PowerDB™ software.

Spares & Accessories (Not Supplied):

MCC1010 and MVC1010
  • For Stakeless tests
  • For ART tests
Cable reels with spike
  • Sturdy handle and a smooth unwind and wind action
  • Cable ‘feed through’
  • 20 m, 30 m, 50 m, 60 m or 100 m cables
  • Attachable 25 cm (10”) earth spike
  • Spike can be hammered into the ground
  • Unique daisy-chain feature to create longer lengths
Continuity test cables and clips
  • 1.4 m cables
  • 2 wire connection cable
  • Crocodile clips
  • Probes
Accessories bag
  • Holds a full suite of accessories
  • Water resistant
  • Toughened bottom for outdoor use

Megger DET2/3 Kit Selector

ISSWWW and Megger

The extensive Megger product portfolio provides electrical test equipment for an exceptionally wide range of applications at any point of the electricity network. From small handheld low voltage equipment such as multifunction installation testers through to high voltage asset test equipment like insulation resistance testers, circuit breaker analysers, protection relay test systems to transformer condition measurement devices.

Megger designs and manufactures portable electrical test equipment in factories located in Germany, Sweden, the UK, and USA. Megger products help you install, improve efficiency, reduce cost and extend the life of you or your customers’ electrical assets.

Established in the late 1800s, the company has been designing and making test and measurement instruments that perform electrical measurements for preventative maintenance, troubleshooting and commissioning for decades. Megger products have supported customers all over the world to improve their facilities’ efficiency, reduce costs, extend the life of apparatus and through trending and analysis, anticipate equipment failure and future performance.
Being a brand synonymous with the industry and a cornerstone pioneer of many of today’s everyday items of test equipment, ISSWWW are proud to bring you Megger’s full range of equipment and services, now and into the future.

Megger DET2-3 Advanced Earth Ground Tester 1008-942 Specification
2, 3 and 4 pole resistance measurements
Range 0.001 Ω to 20.00 kΩ auto range
Display Four digit display
Accuracy at 23 °C
±0.5% of reading ±2 digits
3P: ±10 mΩ
2P: ±20 mΩ
Operational uncertainty ±2% of reading, ±2 digits (meets IEC61557 operational uncertainty requirement with readings over 10 mΩ) when spike resistances are below 100 Ω
±5% of reading, ±2 digits ±10 mΩ (meets IEC61557 operational uncertainty requirement with readings over 50 mΩ)
Test standards BS 7430 (Earthing)
BS 62305 (Lightning)
BS EN50122 (Railway)
IEEE Standard 81
Test frequency 2P, 3P & 4P resistivity 10 Hz to 200 Hz in steps of 0.5 Hz
Test frequency dual clamp, 3p ART & 4P ART 70 Hz to 200 Hz (steps of 0.5 Hz)
Test current 50 mA max
Maximum output voltage Less than 50 V rms
Maximum interference Up to 50 V pk to pk
3 and 4 pole ART (selective) resistance measurements
Range 0.01 Ω to 10.00 kΩ Auto range
Accuracy ±5% of reading ±3 digits at 23 °C ±2 °C
Stakeless resistance measurement
Range 0.01 Ω to 200 Ω
Accuracy ±7% accuracy, ±3 digits
Range 0.01 Ω to 1 kΩ (3 digits)
Accuracy ±3% (±2 digits)
Test Current Up to 205 mA
Lead Null < 10 Ω
Leakage Current
Range 0.00 A to 2.00 A
Accuracy ±5% (±3 digits)
Instrument Specifications
Display 5.25-inch QWVGA, daylight viewable backlit colour
Operating temperature and humidity -10 to 40 °C
90% RH max at 40 °C
Storage temperature -20 to 60 °C
Temperature coefficient < ±0.1% per °C over operating temp
Altitude Up to 2000 m above sea-level.
IP rating IP54 operational (lid open)
IP65 storage (lid closed)
Measurement rating CAT IV 300 V
Measurement output rating ±50 V 1 A, ac or dc
Power supply Internal Li-ion battery or external 12-18 V, 65 W, DC supply
Battery life Up to 10 hrs use
Battery charging time Fast recharge to 50%, 3 hrs for 100%
Ambient temperature  (battery charge) 0 - 40 ºC
Safety Meets IEC 61010
EMC Meets IEC 61326
Dimensions L 315 x W 285 x H 181 mm (12.4 x 11.2 x 7.1 in)
Weight 4.5 kg (9.9 lb)
Data download To PC through USB 2.0
Data storage On board 500 record storage downloadable as *.txt
USB type A Data download to USB drive
USB type B Data download to PC
Secondary measurement display Noise, voltage and current
Resistivity calculation

Wenner: PE = 2 π a RW

Schlumberger: PE = π b (b+a) R / a

Test modes Internally set 2P, 3P, ART (Selective), 4P, Stakeless (clamp) modes
Aux inputs MCC1010, MVC1010
RoHS compliant Yes

Standard FREE 3-5 Day Courier Delivery – UK Mainland only - Zones A & B
Included in the price for all orders over £40.00 (exc vat). Sent using express courier, delivered within 3-5 working days from the date of your order, subject to availability.

Standard 1-2 Day Express Courier Delivery – UK Mainland only - Zones A & B
£4.50 for all all orders under £40.00 (exc vat). Sent by express courier, delivered within 1-2 working days from the date of your order, subject to availability.

Express Courier 1-2 Day Delivery – UK Mainland only - Zones A & B
£4.50 select at the checkout. Sent using express courier.

Next Day Delivery – UK Mainland only - Zones A & B
£8.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for next day delivery, subject to availability.

Saturday Pre 12am - UK Mainland only - Zones A & B
£15.00 select at the checkout. Sent using express courier, orders must be placed before 3pm for Saturday delivery.

Orders must be placed before 3pm for next day delivery and a telephone number supplied, subject to availability.
Please note that predicted delivery times are based on regular trading days Monday to Friday. Public holidays, bank holidays and weekends are outside the usual scope of our dispatch and therefore may incure additional days lead time to your order.

Orders requiring calibration. Whilst we take the greatest care to get all orders dispatched and delivered to you in the stated time frame, orders received late afternoon and requiring calibration may on occasion miss dispatch that day, according to the complexity of the calibration. Be assured they will ship on the next dispatch, this in most cases should not add more than 24 hours to you delivery.

Delivery Surcharges
Because of the high cost of carriage we need to apply a surcharge on all deliveries made in the following regions bringing the carriage charges to:

  • Zones A & B  - Mainland delivery rates apply. 
  • Zone C - Scottish Highlands. 
  • Zone D - Outer Hebrides, Orkney Isles, Shetland Isles, Isle of Man, Scilly Isles, and Channel Islands.
  • Zone E - Northern Ireland
  • Zone F - Republic of Ireland

New Postage Map Sept 2018> 

International delivery

International delivery charges are automatically added to your order at the checkout; you can also use the guide below for a guide on prices. For any questions regarding international deliveries please contact us at

If no shipping option is available to your selected country please call us on +44 (0) 1603 406 148 to purchase your items.