GYTC8A optical cable is to insert 250 m optical fiber into a loose sleeve made of high modulus material and fill the loose sleeve with waterproof compound. The center of the cable core is a metal reinforced core (or non-metal, such as FRP, etc.). The loose sleeve (and filling rope) is twisted around the center reinforced core to form a compact and round cable core. The cable core is longitudinally wrapped with a plastic-coated aluminium strip (APL) and integrated into an 8-shaped polyethylene sheath with steel wire strands. TTI Co., Ltd. can also provide Y sheath or S sheath of 8-shaped optical cable GYTC8Y, GYTC8S and so on. These products are mostly used in self-supporting overhead laying.
♦ Wire strand has very high tensile strength, which is convenient for self-supporting overhead laying and reduces installation cost. ·
♦ Good mechanical properties and temperature characteristics
♦ Loose casing material itself has good water resistance and high strength.
♦ Special ointment is used in the tube to protect the optical fiber critically.
♦ The following measures are adopted to ensure the waterproof performance of optical cables
Special Waterproof Compounds Filled in Loose Casing
Full Section Filling of Cable Core
Double-sided Plastic Aluminum Strip (APL) Moisture-proof Layer
G.652 | G.655 | 50/125μm | 62.5/125μm | ||
Attenuation | @850nm | – | – | ≤3.0dB/km | ≤3.0dB/km |
@1300nm | – | – | ≤1.0dB/km | ≤1.0dB/km | |
@1310nm | ≤0.36dB/km | – | – | – | |
@1550nm | ≤0.22dB/km | ≤0.23dB/km | – | – |
Cable Type | Fiber Count | Cable Diameter (mm) | Cable Weight(kg/km) | Tensile Strength(N/100mm) | Crush Resistance(N/100mm) | Bending Radius (mm) | |||
Short Term | Long Term | Short Term | Long Term | Static | Dynamic | ||||
GYTC8A -2~60 | 2~60 | 9.5 x 18.3 | 218 | 7500 | 4000 | 1000 | 500 | 15D | 30D |
GYTC8A -62~72 | 62~72 | 10.5 x 19.3 | 240 | 7500 | 4000 | 1000 | 500 | 15D | 30D |
GYTC8A -74~96 | 74~96 | 12.5 x 20.3 | 280 | 7500 | 4000 | 1000 | 500 | 15D | 30D |
GYTC8A -98~120 | 98~120 | 13.5 x 21.3 | 320 | 7500 | 4000 | 1000 | 500 | 15D | 30D |
GYTC8A -122~144 | 122~144 | 15.0 x 24.3 | 350 | 7500 | 4000 | 1000 | 500 | 15D | 30D |