111 AFLglobal.com 1 (800) 235-3423 © 2017, AFL, all rights reserved. PP-3-00821, Revision 2, 3.18.2025 Specications are subject to change without notice. 111 Fiber Optic Cable Accessories continued AVD Series Spiral Vibration Dampers AFL's AVD Series Spiral Vibration Dampers are designed to eliminate the damage caused by Aeolian vibration and reduce overall vibration on bare All-Dielectric Self-Supporting (ADSS) cables. Made of weather-resistant, non-corrosive plastic, these dampers have a large, helically-formed damping section sized for the ADSS cable. A smaller gripping section gently grips the ADSS cable. Each damper is marked with the conductor range and color coded to indicate the cable diameter size range. Line design, temperature, tension, wind flow exposure and history of vibration on similar construction in the location are factors to consider when determining the amount of protection required. Installation can be on both sides of the support location—at least one hand-width from the ends of Armor Rods or cable hardware. Depending on the customer's specific conditions, AFL recommends the AVD Spiral Vibration Damper for ADSS cable in accordance with the recommended application chart. L* BALL END GRIPPING SECTION OVERALL LENGTH (APPROX.) CABLE * For "L" dimensions, see table below. Ordering Information Select catalog number based on cable diameter. Example: for 0.512" diameter, order AVD462/563 Conductor Diameter Cross Reference AFL No. PLP No. Conductor Diameter Range inches (mm) "L" Rod Length inches (mm) Weight lbs (KG) Standard Pack AVD250/326 50502393 0.250-0.326 (6.35-8.29) 49 (1244) 27 (12.247) 50 AVD327/461 50502272 0.327-0.461 (8.30-11.72) 51 (1295) 30 (12.701) 50 AVD462/563 50502274 0.462-0.563 (1.73-14.32) 53 (1346) 30 (13.608) 50 AVD564/770 50509862 0.564-0.770 (14.33-19.30) 64 (1625) 47 (21.319) 25 AVD771/876 50503057 0.771-0.876 (19.58-22.25) 71 (1803) 29 (13.154) 25 AVD877/1000 50503576 0.877-1.000 (22.26-25.40) 75 (1905) 36 (16.329) 25 AVD1001/1250 50503909 1.001-1.250 (25.41-31.75) 90 (2286) 41 (18.597) 25 112 AFLglobal.com 1 (800) 235-3423 © 2017, AFL, all rights reserved. PP-3-00821, Revision 2, 3.18.2025 Specications are subject to change without notice. 112 Fiber Optic Cable Accessories AVD Series Spiral Vibration Dampers (cont.) Damper Recommendations for Placement Damper Recommendation applies for specified AFL dampers only. If alternative type or different manufacturer dampers are applied instead, it is possible that damage will occur on the conductor and/or the accessories. Symbol Designation 2/s = 2 dampers per span, 1 on each end of the span 4/s = 2 dampers in tandem on each end of the span 6/s = 3 dampers in tandem on each end of the span 8/s = 3 dampers in tandem + 1 damper on each end of the span 10/s = 3 dampers in tandem + 2 dampers in tandem on each end of the span 12/s = 3 dampers in tandem + 3 dampers in tandem on each end of the span 16/s = 3 dampers in tandem + 3 dampers in tandem + 2 dampers in tandem on each end of the span 18/s = 3 dampers in tandem + 3 dampers in tandem + 3 dampers in tandem on each end of the span 20/s = 4 dampers in tandem + 3 dampers in tandem + 3 dampers in tandem on each end of the span Placement and Spacing 1. AVD shall be placed approximately 5 inches away from any line hardware (suspension, deadend, armor rods, other SVDs, etc.). 2. AVDs can be nestled in tandem for up to three units to prevent the units from interfering with each other. 3. AVDs shall be applied to bare cable only to ensure proper performance. Initial Tension Percentage of Cable Rated Breaking Strength (RBS) at Nominal Temperature 60°F Span Length 0-10% 11-15% 16-20% 21-25% >25% < 250 ft. 0 2/s 2/s 2/s 2/s 251-500 2/s 2/s 2/s 2/s 4/s 501-800 2/s 2/s 2/s 4/s 4/s 801-1600 4/s 4/s 4/s 6/s 6/s 1601-2400 6/s 6/s 6/s 8/s 8/s 2401-3000 8/s 8/s 8/s 10/s 10/s 3001-3500 10/s 10/s 10/s 12/s 12/s 3501-4000 12/s 12/s 12/s 16/s 16/s 4001-4500 16/s 16/s 16/s 16/s 18/s 4501-5000 18/s 18/s 18/s 18/s 20/s NOTE: SMALLER HELIX GRIPPING SECTION DAMPING SECTION