Troubleshooting leakage currents with the Martindale CM69

The CM69 TRMS AC Leakage Clamp Meter is ideal for troubleshooting leakage currents where other clamps can’t, for example, for tracking down the causes of nuisance RCD tripping.

Class leading low current performance for accurate leakage current measurement

Featuring class leading low current performance with a resolution 0.001mA the CM69 makes it easy to accurately measure AC currents from less than 0.1mA right up to 60A. It features a unique jaw design which minimises the influence of adjacent current conductors enabling professionals to perform precise and reliable tests at very low currents.

True RMS measurement ensures that leakage currents can be identified and measured accurately even when due to harmonics. In addition, the design includes a switchable filter enabling repeatable periodic measurements at 50Hz for assessing insulation quality and deterioration without powering down the circuit.

An essential live troubleshooting tool for all electricians

The advanced features and high resolution make the clamp an essential live troubleshooting tool for all electricians enabling fast solutions to common problems from nuisance tripping of RCDs, through to identification of triple neutral currents. The very low current capability means it can also be used to simplify appliance testing by measuring leakage currents through the earth conductor or by clamping around both live and neutral conductors to measure the differential leakage current.

Extremely compact, the CM69 includes AC/DC voltage measurement, plus resistance and continuity functions meaning it can be used to replace other general purpose clamps as well as offering a high level of troubleshooting. A CAT IV safety rating and rugged design ensures it can be used in the most demanding applications.

The CM69 is a lightweight and simple to operate meter with a high contrast backlight display for use in areas where ambient lighting is poor.

Diagnose leakage currents and harmonics without powering down the installation

The ever increasing use of power electronics in electrical equipment and lighting can result in higher leakage currents and harmonics, the CM69 is the perfect troubleshooting tool to diagnose related problems easily and quickly without having to power down the installation.

To explore the full range of Martindale Electric clamp meters and find the right solution for your application, view our complete clamp meter range.