Vibration Damper for ADSS OPGW Cables

Clamp Type Vibration Damper for ADSS/OPGW cables, with tuning fork structure of Damper Weight,  is validated by China Electric Power Research Institute that there are four frequency between 5~150HZ, and its vibration range is wider than FG Damper or FD Damper. Plenty Vibration Dampers have been installed on ADSS cables.
Material

1. 1.Damper Weight---Hot dip galvanized cast iron;  
2. 2.Messenger Wire---19 strand galvanized steel wires
3. 3.Clamp--- Aluminum Alloy;                      
4. 4.Amor Rods--- Aluminum Alloy.

Direction
1. Vibration Damper can’t be directly installed on the ADSS/OPGW Cable,it should install with armor Rods.
2. Calculate the installation distance, if it is within the Armor Rods then install as usual (Install on Armor Rods directly). If the installation position of Vibration Damper is outside of the Inner Preformed Rods, you should install Armor Rods. The distance between the end of Amor Rod of Vibration Damper and Inner Preformed Rods of Fittings must be more than 70mm.
3. The big Damper Weight of low frequency is close to pole or tower.
4. The quantity of damper per span length is according to cable strength, span length and topography. The normal specification is as follows:

Cable Diameter Of ADSS/OPGW（mm）	Span Length（m）
	One  (Both Two Side）	One  (Each Side)	Two  (Each Side)	Three  (Each Side)
d<12	≤200	200-300	300-600	600-900
12≤d≤22	≤200	200-350	350-700	700-1000