Overhead Line Fittings for Electric Power

Vibration Dampers for OPGW (4D)
COMPONENT
zincification hammerhead, zincification steel armor rods, aluminum alloy clamp, stainless steel bolt etc.
FUNCTION
It eliminates or reduces the vibrations caused by many factors during the cable operations, and protects the cables and hardware fittings.
Description

Model Size of Aluminum Clamp(mm)   Range of Clamping Length(mm) Total Length L(mm) Length of Clamp (mm) Height of Clamp (mm) Diameter of Steel Armor Rods(mm) Weight(KG)
4D-40 34 34.0-29.5 542 66 94 11 4.7
30.5 30.5-27.0 96
27.6 27.6-24.5 98
4D-30 27 27.0-22.5 383 52 70 9 2.5
23.4 23.4-19.5 72
20.3 20.3-16.5 73
4D-20 18 18.0-15.0 330 52 65 7.5 1.4
16 16.0-13.3 63
14 14.0-12.2 62

CHARACTERISTIC 
It adopts typical Hello's design. Frequency protection is distributed enough to the range of 6Hz -150Hz wide frequency zone. And in this range, there are four resonance frequencies.
FACTOR OF VIBRATION 
Length of span, tensile magnitude, wind speed, wind direction, landform, and the structure and size of the cable.
NOTE  The aluminum clamps for 4D—20 are 27.0, 23.4, 20.3, 18.0, 16.0, 14.0
         The aluminum clamps for 4D—30 are 27.0, 23.4, 20.3, 1 8.0, 16.0, 1 4.0



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