DISCONNECTION ALARM APPARATUS OF OVERHEAD ELECTRIC WIRE

摘要

PROBLEM TO BE SOLVED: To provide a disconnection alarm apparatus of an overhead electric wire, correctly diagnosing disconnection of fatigue due to vibration in a discharge clamp of an electric wire without vibrating the electric wire.

SOLUTION: A conductor 2a exposed by removing an insulator 2b of an insulator of an overhead electric wire 2 is supported on an electric wire holding portion 31 provided on one end of an insulator portion 30. A temperature sensor 4 is provided closely fixedly on the surface of the conductor 2a. Since the temperature of the conductor 2a in a live wire increases in accordance with the number of strand disconnection of the conductor 2a due to vibration fatigue, the temperature sensor 4 becomes a conduction state when the temperature in a state for warning that the overhead electric wire 2 is soon fully disconnected, and a power supply box 7 supplies power to an LED light-emitting portion 6 to turn on a light-emitting element of the LED light-emitting portion 6.

COPYRIGHT: (C)2008,JPO&INPIT