Fault sensor device with radio transceiver

A line-mounted fault sensor for monitoring at least two operating parameters of an AC power transmission or distribution line and deriving information concerning faults occurring on the line, comprising:

• first and second sensors, connectable in proximity to the transmission or distribution line, for providing at least two analog signals each representative of a time varying value of one of said at least two operating parameters;
• an analog-to-digital converter connected to said first and second sensors for sampling said at least two analog signals and producing corresponding digital signals;
• a processor responsive to said digital signals for detecting an abnormal condition and thereafter distinguishing whether any of a plurality of types of faults has occurred, and if so which of the plurality of types of faults occurred;
• and
• a transmitter responsive to said processor for, if any of the plurality of types of faults occurred, transmitting to a remote location information identifying which of the plurality of types of faults occurred.