We Ship Free on Orders Over $99 within the Continental United States
Yopto star rating

Customer Rating: 4.7/5 Stars

Megger DET14C Clamp-On Ground Tester

Model: 1000-761 | Order No: DET14C

Large elliptical clamp design. Smooth mating surfaces on the clamp head.

Regular Price $1585.00 USD
Availability 13 to 14 Weeks

Recommended Accessories

DET14C Clamp-On Ground Resistance Tester

The DET14C is an advanced clamp-on ground resistance tester that sets new standards in terms of access, performance, features, simplicity of operation and safety. The DET14C is used to measure earth/ ground resistance in multiple loop installations without disconnecting the ground.

Designed with flat core ends, these units prevent dirt build-up, ensuring measurement integrity and improved reliability over products with interlocking teeth. Other enhancements include safety to CATIV 600V, a built-in filter function for electrically noisy environments, time and date stamped stored test results and ultra long battery life. Megger has taken what is now a standard test method and significantly improved its field applicability.

The DET14C is designed to quickly measure ground electrode resistance in applications where this type of test method can be used and/or verify the integrity of ground connections. The goal of ground resistance testing is to ensure that the resistance ground electrode system is low enough to prevent or limit voltage rises caused by fault current, electrical surges, lightning strikes, etc.

Clamp-on ground testers work in applications where there is a loop resistance to measure with ground paths in the system (the more ground paths, the closer to the actual resistance). A utility pole ground system is a classic example of this type of application.

Perfect For

  • Power utilities
  • Electrical contractors/electricians
  • Specialist grounding contractors
  • Electrical testing companies
  • Telecommunications companies
  • Railroads
  • Mining companies


  • Pole grounds
  • Service entrance/meter ground electrodes
  • Service panels
  • Pad mount transformer grounds
  • Transmission tower grounds - utlility ground cables
  • Telephone pedestals
  • Telephone cabinets
  • Lightning protection ground electrodes

What's Included

  • Carrying case
  • Carrying strap (wrist loop)
  • User guide CD-ROM
  • Calibration check
  • Battery AA (Alkaline) (4 required)

Key Features

Large elliptical clamp (head) design

  • Allows testing of round cables/rods up to 37 mm diameter and ground tapes/straps up to 50 mm width
  • Improved testing access

Smooth mating surfaces on the clamp head

  • Easy to clean
  • No interlocking teeth to damage

CATIV 600 V operation

  • Highest level of user safety available
  • Unit can be used safely before the distribution board

Noise filter function

  • User can select the filter function to increase noise immunity
  • Allows the unit to be used in higher electrical noise environments

Resistance and current limit alarm functions (visual and audible)

  • Minimum and maximum limits can be set to reduce test time/improve accuracy

Intelligent data hold function (preset before testing)

  • Increases instrument ease of use in difficult testing locations

Backlit display

  • Allows for operation in low light environments such as cable basements

Time and date stamped results

  • Improved data/results management
  • Improved accuracy of result reporting

New ergonomic trigger design

  • Easier and more comfortable to operate
  • Less chance of slippage causing the head to snap shut

Ultra long battery life (24 hours continuous) with readily available batteries

  • Longer operating time
  • Reduced cost of ownership


Resistance Measurements
Ground Resistance Range Resolution Intrinsic Certainty
0.05 Ω to 0.99 Ω 0.01 Ω ±1.5% ±0.05 Ω
1.00 Ω to 9.99 Ω 0.01 Ω ±1.5% ± 0.1Ω
10.0 Ω to 99.9 Ω 0.1 Ω ±2% ± 0.5 Ω
100.0 Ω to 199.9 Ω 0.1 Ω ±5% ± 1 Ω
200 Ω to 400 Ω 1 Ω ±6% ± 5 Ω
400 Ω to 600 Ω 1 Ω ±10% ± 10 Ω
600 Ω to 1200 Ω 10 Ω ±20%
1200 Ω to 1500 Ω 10 Ω ±35%
Frequency of measurement 1390 Hz.

What's included with the Megger 1000-761

  • Megger DET14C Clamp-On Ground Tester
  • Click on a category to view a selection of compatible accessories with the Megger DET14C Clamp-On Ground Tester.

    Megger 1002-037 USB to IRDA Dongle for DET14C 1002-037
    For use with the DET14C Clamp-on Ground Resistance Testers.

    Review the Megger Limited 1000-761

    " data-description="Clamp-On Ground Tester with Data Storage.">

    Ask a question about Megger DET14C Clamp-On Ground Tester

    Calibration Lab