APPLICATION
OPGW cables are used power transmission, communication, and lightning protection. It could replace traditional static / shield / earth wires on overhead transmission lines and add benefit of containing optical fibers which can be used for telecommunications purposes. It is suitable for high-voltage/ultra-high-voltage lines in intercity or cross-country projects that need both communication and grounding functions over long distances.
DESCRIPTION
The stainless steel tube is stranded by double or three layers of aluminium clad steel wires(ACS) or mix ACS wires and aluminium alloy wires.
MAIN CHARACTERISTICS
● Larger cable diameter and much more fiber count.
● Larger tensile strength and fault current capacity to reach a better balance of electrical and mechanical performance.
● The amount of Stainless Steel Tube could be 1, 2 or 3 (max. at present).
● Optimum stranding design to reach a suitable secondary fiber excess length.
● The stranded layers could be double layers or three layers, the stranded wires could be AS wires with/or AA and Al wires.
STANDARD
ITU-TG.652
Characteristics of a single mode optical fiber.
ITU-TG.655
Characteristics of a non-zero dispersion -shifted single mode fibers optical.
EIA/TIA598 B
Col code of fiber optic cables.
IEC 60794-4-10
Aerial optical cables along electrical power lines-family specification for OPGW.
IEC 60794-1-2
Optical fiber cables -part test procedures.
IEEE1138-2009
IEEE Standard for testing and performance for optical ground wire for use on electric utility power lines.
IEC61232
Aluminum -Clad steel wire for electrical purposes.
IEC60104
Aluminum magnesium silicon alloy wire for overhead line conductors.
IEC 61089
Round wire concentric lay overhead electrical stranded conductors.
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