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Charlotte Stonestreet
Managing Editor |
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Leakage clamp meter
08 February 2016
Now available from Martindale Electric, the new CM69 TRMS AC Leakage Clamp Meter, can be used to troubleshoot leakage currents where other clamps can't, for example, for tracking down the causes of nuisance RCD tripping.

Featuring low current performance with a resolution 0.001mA the new clamps make it easy to accurately measure AC currents from less than 0.1mA right up to 60A.
The CM69 features a jaw design which minimises the influence of adjacent current conductors enabling professionals to perform precise and reliable tests at very low currents.
One of the few testers on the market which uses True RMS measurement, the CM69 ensures that leakage currents can be identified and measured accurately even when due to harmonics. In addition the new design includes a switchable filter enabling repeatable periodic measurements at 50Hz for assessing insulation quality and deterioration without powering down the circuit
- Higher voltage safe isolation
- Staysafe with ToolBox Talks
- Flexible solution to safe isolation
- Non-contact voltage & magnetic field detection
- Ensure circuits have been de-energised
- Proving units verify safety & calibration in one
- Martindale relocates
- Insulated G clamps
- Phase rotation measurement simplified
- Lock out kits