1.Package of optical cable Metal-free aerial AD-Lash (All-Dielectric Tie-in Cable) and metal-free wound optical cable
The GWWOP (GroundWireWrappedOpticalFiberCable) optical cable is sometimes collectively referred to fiber optic cable Additionally – OPAC, which is a cost-effective and fast way to build a fiber optic communication network on power lines.
They use automatic binding and winding machines to bind and wind optical cables onto ground or phase wires. Their common advantages are: optical cables are lightweight, low-cost, and quick to install. They can be installed on the ground wire or 10kV/35kV phase line without power interruption. The common disadvantage is that, since they all use organic synthetic materials as an outer sheath, they cannot withstand the high temperature generated by the phase or ground wire when the line is short-circuited. The aging of the outer sheath material requires special machinery during construction, and there are many problems in terms of feasibility and safety of construction. They are also vulnerable to external damage, such as bird strikes, gunfire, etc., so this has not been fully resolved in power systems. Despite a wide range of applications, this type of technology has not been eliminated or abandoned and is still applied in a considerable range of applications worldwide.
2. Fiber optic composite cable
Fiber optic composite cable is primarily similar to OPPC. The optical fiber unit is combined with the cable, so the cable has the dual functions of phase line and communication. Fiber optic composite cables include low-voltage OPLC fiber optic composite cables, medium-voltage OPMC fiber optic composite cables, and high-voltage fiber optic composite cables, which are now used in high-voltage cables (such as 110 kV submarine power cables, 220 kV submarine power cables, and some ground cables).
The OPMC medium-voltage fiber optic composite cable is a smart medium-voltage composite cable for power systems with a nominal voltage of 6 kV to 35 kV. This medium-voltage fiber optic composite cable consists of a cable core, a cable core tape layer, and an outer jacket. Power transmission cables and water-blocking fillers are located within the cable core. Each power transmission cable comprises a conductor, a conductor shield layer, an insulation layer, an insulating shield layer, and a metal shield layer. A loose tube containing an optical fiber is provided within the cable core, and a non-metallic reinforcing layer and a sheath are sequentially placed outside the loose tube. A layered fiber optic communication unit, an inner jacket, and a steel tape shield layer are sequentially provided between the cable core tape layer and the outer jacket.
Post time: Feb-09-2023
