Lead cable damage protection device for electric lawnmower or hedge trimmer uses electromagnetic field detector for electromagnetic field of lead cable for automatic current cut-out

摘要

The lead cable damage protection device has at least one electromagnetic field detector, coupled directly or via a threshold switch, to at least one current cut-out device. The electromagnetic field detector uses a conductor wire coil as the sensor, which is positioned adjacent the cutting tool of the lawnmower or hedge trimmer, for detecting the electromagnetic field (12) of the lead cable (8).