Spiral Vibration Damper For ADSS Or OPGW Cable
Spiral Vibration Dampers have a helically formed damping section sized for interplay of damper and cable to provide the action/reaction motion that opposed the natural vibration wave. A smaller gripping section gently grips the cable so that cable and fiber are not damaged or distorted and there is no optical signal loss. These PVC Spiral dampers are recommended for the ADSS cable when the combination of span length and tension indicate by vibration review that external vibration protection is required
Product Introduction
Spiral Vibration Damper for ADSS or OPGW Cable
details
| Catalogue number | Range diameter (mm) | Dimensions (mm) | |||
|---|---|---|---|---|---|
| Normal type | Resistance to E-corrosion type | ||||
| L1 | L2 | ||||
| FLP-10 | FLN-10 | 10.39~11.70 | 300 | 1050 | |
| FLP-11 | FLN-11 | 11.71~13.0 | |||
| FLP-12 | FLN-12 | 13.01~14.30 | |||
| FLP-12.5 | FLN-12.5 | 14.31~15.70 | |||
| FLP-13 | FLN-13 | 15.71~17.10 | |||
| FLP-14 | FLN-14 | 17.11~18.50 | |||
| FLP-16 | FLN-16 | 18.51~20.00 | |||
| FLP-17 | FLN-17 | 20.01~21.50 | |||
| FLP-18 | FLN-18 | 21.51~22.90 | |||
The spiral vibration damper is made of high-strength aluminum alloy, which can withstand harsh environmental conditions. The spiral shape of the damper disperses wind energy along the length of the cable. The device works by absorbing the mechanical energy generated by the wind-induced conductor vibration, resulting in reduced Aeolian vibration amplitude and fewer fatigue failures. The spiral dampers not only protect the cables from damage but also improve electrical performance since vibration-induced conductors' noise reduces optical signal quality.
Installation Technique
The proper installation of vibration dampers is essential to ensuring maximum protection against the damage caused by vibration. Here are some techniques that you should consider when installing the spiral dampers on the ADSS and OPGW cables.
1. Placement – Spiral vibration dampers should be spaced between the support points with a spacing of 30m to 40m to attain optimal effectiveness. They should always be installed at the cable ends, at the mid-span, and at the sag points, depending on the cable's length.
2. Positioning – Ensure the positioning of the damper is optimally in line with the cable to lessen the effects of irregular wind flows.
3. Tightening – Place the dampers onto the cable and adjust them so they remain around the cable during installation. Tighten the bolts until they're secure but ensure that the damper remains movable on the cable.
4. Quantity – The number of dampers to install on the cable depends on the cable diameter and thickness. Always refer to the manufacturer's instructions to determine the optimal number of dampers for your specific cable.
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