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Electric power communication network is major communication network of the country and support networks of modern
network with the main feature "three second high". Power industry has a unique advantage in developing optical fiber
communication as power network spread all over the urban and rural areas and laying fiber optical cable along the
electric power lines has high reliability and economy. Special cables used in power communication network mainly
include ADSS cable and OPGW cable. OPGW cable is special for power line formed from traditional structure added
fiber unit. It also has the function of overhead ground wire and optical cable.
This optical cable uses 6 loose tubes (or partial gasket for packing) to wind around the FRP and become the a complete
round cable core, which is stranded of certain number of Kevlar with potentiation after being covered with PE internal sheath.
Finally, the PE external sheath will be squeezed. The loose tube is made of the materials with great temperature properties.
Several single mode or multi mode optical fiber (2-8 core) of a proper extra length and the oil jelly used for moistureproof optical fiber are put into the tube. The slits of the
cable core are fulfilled with water-blocking compound.
|The compact and round shape cable core is a combination of the loose sleeve pipe (gasket for packing) and center-strengthened core, the gap in the cable core is filled with water retarding compound. The polyethylene overlayer will become optical cable after the plastic-plated Aluminum belt is covered vertically.|
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