Abstract: The present invention relates to a monitoring system of wind-induced motion or vibration in at least one overhead cable (102), in particular a conductor aerial cable (102) of a transmission or distribution electric line. The monitoring system comprises: at least three sensor nodes (104) adapted to be installed in positions different from each other on a first overhead cable (102) and configured for detecting the motion or vibration through a synchronous signal acquisition. Each of the at least three sensor nodes (104) comprises a respective triaxial accelerometer sensor (301) configured for acquiring a first node signal and a first processor (302) configured for identifying, in the first node signal, a maximum node amplitude and an associated node frequency through a spectral analysis of the first node signal.

Abstract: A hot line clamp for temporarily or permanently connecting a branch conductor to a main conductor. The clamp includes a rigid generally U-shaped body with a cylindrical boss for receiving the branch conductor. The branch line is secured in place on the ground by the lineman. The clamp also includes a flap member which is rockably mounted about one leg of the U-shaped body between an open position for enabling the clamp to be received on the main conductor and a closed position for maintaining the clamp in place on the main conductor. A torsion spring is disposed around the pivot for the flap member and biases the latter toward the open position. The edges of flanges on flap member cooperate with the main conductor when the clamp is received thereon for rocking the flap member to the closed position.