Electricity: conductors and insulators – Overhead – With conductor vibration damping means
Patent
1975-08-11
1977-03-08
Askin, Laramie E.
Electricity: conductors and insulators
Overhead
With conductor vibration damping means
24262R, 248 74R, 267 33, 267167, 267179, H02G 714
Patent
active
040113973
ABSTRACT:
Improved multiple mode dampers for damping Aeolian vibrations of electrical cables are provided which employ a single mass and two resilient support members that are respectively connected between separate points of the mass and separate points of the cable. The modes of vibration of the damper are made interdependent by utilizing springs having different moments of stiffness with respect to the center of gravity of the mass. The mass is made of concrete. The improvement comprises the use of springs which are independently connected to the cable at different points permitting the spreading of the springs which can be accomplished economically and yet permit an increase of the rotational torque exerted on the damper by the cable. This facilitates concentration of damper vibration resonance frequencies at critical wind speeds which would ordinarily induce great dynamic mechanical stress in electrical cables.
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Askin Laramie E.
Lawlor Reed C.
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