THE ROLE OF THE CABLEGUARDIAN UNIT.
The CableGuardian units are the “eyes and ears” of the monitoring system. The unit is installed as part of a kit with the necessary measurement coil harness, power cable and communications antenna (if using cellular communications).
The unit can be powered from a domestic supply at 240V or 110V but it can also take its power from the 650V line being monitored, with the appropriate power cable being supplied by us depending on the option chosen. “Solid” or “split” measurement coil options are available.
Solid cores are used when the system can be down-powered to install the equipment. The split core can be installed around a live 650V cable. A second, smaller, split measurement coil is connected around a single core within the 650V cable to measure the line current. A functional earth connection is required for the CableGuardian unit to measure correctly. Note that this is not a protective earth as the unit is fully Class II certified.