An apparatus determines a characteristic of a portion of a power line. The apparatus comprises a coupling device in communication with a processor. The coupling device receives a signal from a power line and the processor receives the signal from the coupling device and determines a characteristic of...http://www.google.fr/patents/US7076378?utm_source=gb-gplus-shareBrevet US7076378 - Device and method for providing power line characteristics and diagnostics
Device and method for providing power line characteristics and diagnostics