Optical Fiber Composite Ground Wire(OPGW)

1. Central Stainless Tube Type
A. Small cable diameter, light weight, low additional load topoles/towers
B. The stainless steel tube fiber unit is placed in the center ofthe strand layer
C. Obtaining appropriate fiber excess length(primary)withinstainless tube
D. With single armouring the OPGW has a bit poor flexure and crushresistance, and a bit poor tensile strength
E. Obtaining the best balance of electric and mechanic performanceby adjusting AA/SS combination
Note: Multi layer armouring, SUS or SUSP OP-Unit are vailable asrequired

2. Layer Stranding Stainless Tube Type
A. Typically having larger cable diameter
B. The stainless steel tube fiber unit is placed in an eccentricposition and is stranded together with Al-clad steel wires orAl-alloy wires simultaneously
C. The Al-clad steel wires placed in the inner layer can providethe freedom from rust, high reliability and long life
D. Optimum stranding design, making secondary fiber excess lengthavailable
E. Good flexure and crush resistance
F. Providing very high mechanical strength and large short-circuitcurrent capacity
G. Obtaining the best balance of electric and mechanic performanceby adjusting AA/SS Combination

3. Central Sealed Al-Covered Stainless Tube Type
A. Extremely good corrosion resistance
B. Improved lightning resistance and fault current
C. Two tube design superior protection to the optical fiber frommoisture and horizontal fluid penetration resistance
D. Small diameter, light weight, compact design
E. No anticorrosion grease, clean environment, longer life

4. Compressed Layer Wires Lightning Resistant Type
A. Extremely improved lightning resistant properties
B. Reduce inner layer diameter, extremely increase outer layerwires diameter
C. Compact design, fully using cross-section
D. Available for central structure, Single or multi layer strandingwires application