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Megger’s DET14C and DET24C earth-resistance clamp testers feature clamps with elliptical tapes up to 50mm wide, making them suitable for applications where access to conductors is restricted.

In addition, these instruments have a Cativ 600V safety rating in line with EN61010, with 8kV of transient isolation, and operator safety is enhanced by a hazardous current warning that is operative on all test ranges.

To help ensure long-term accuracy and reliability, the instruments use clamps that have smooth mating jaw faces.

These are easy to clean and eliminate the easily bent interlocking teeth found on most other earth-resistance clamp testers.

Designed to allow accurate measurement of earth resistance in multiple loop systems without the inconvenience of having to break earth connections, the instruments can measure ground resistance over the range 50mohm to 1,500ohm, and true RMS ground leakage current from 0.2mA to 35A.

As an aid to use in hard-to-reach locations, they incorporate a convenient pre-hold function that automatically initiates a test when clamped round an electrode and then holds the reading for easy review when the test is complete.

DET14C and DET24C earth-resistance clamp testers are powered by standard AA batteries.

Battery life is said to be exceptional – with a 25ohm load, for example, up to 24 hours of continuous testing can easily be obtained from a single set of batteries.

Both models offer auto ranging, high and low alarms, automatic self-calibration and internal memory, which allows results to be recorded and reviewed.

Results stored in memory are automatically date and time stamped.

In addition, a display backlight along with hold key that produces an audible tone when pressed, make it easy to use the instruments even in areas where lighting is poor or access is restricted.

The DET24C adds an optically isolated USB interface that allows it to be connected to a PC and it can calculate the maximum, minimum and average values of periodic measurements.

It is compatible with Megger’s data capture and analysis software packages PowerDB and PowerDB Lite, which provide a consistent platform for handling, archiving and reporting on data from power test instruments of all types.

Megger’s DET14C and DET24C earth-resistance clamp testers are supplied complete with carrying case, calibration loop, batteries and a user guide.

Additionally supplied with the DET24C models are a USB interface and copy of the PowerDB Lite software package.

Megger

For 100 year Megger has been committed to making electrical measurement of low and high voltage systems more accurate and simple-to-use. It has a reputation for tough, reliable, high quality equipment.

For 100 year Megger has been committed to making electrical measurement of low and high voltage systems more accurate and simple-to-use. It has a reputation for tough, reliable, high quality equipment.

Megger offers equipment for testing breakers, protection relays and CTs, as well as transformers, earthing systems and standby batteries to the electrical generation, transmission and distribution industries. In the LV sector Megger is the market leader for the testing of building wiring to the 17th Edition of the Wiring Regulations and portable appliances.

They have recently acquired a range of water leak detectors

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