GYXTW Armored Unitube Cable
Structure
The GYXTW armored unitube cable is a kind of loose tube fiber optic cable, but its structure is different from that of a stranded one. First of all, single or multi mode fibers are set inside a loose tube which is fabricated from high modulus polyester and filled with water blocking material, and then this tube is covered by a PSP (plastic-steel-plastic) layer along its length. Between the loose tube and PSP, there are some water blocking materials used to form a compact structure and avoid longitudinal water penetration. Finally, two parallel steel wires are placed at two sides respectively, and a PE sheath completes the entire structure.
Structural Diagram
Fiber
Tube filling compound
Loose tube
Steel wire
Water-blocking material
PSP
PE sheath
Fiber bundle
Tube filling compound
Loose tube
Steel wire
Water-blocking material
PSP
PE sheath
Characteristic
1. Our armored unitube cable is a lightweight product with small diameter, and it allows easy cable laying process.
2. The PSP layer outside the loose tube greatly improves moisture proofing property of this unitube optical cable, and two parallel steel wires contribute to high tensile strength.
3. There is some special gel inside the tube to protect optic fibers, and the tube boasts high strength and superior hydrolysis resistance. Furthermore, the compact structure effectively prevents the tube from retraction.
4. Our outdoor single/multi mode optical cable is featured by good flexibility and crush resistance, and its precisely controlled excess fiber length guarantees reliable mechanical property and temperature stability. Additionally, the PE sheath offers excellent UV resistance.
Standard Fiber Color Codes
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
| Colour | Blue | Orange | Green | Brown | Slate | White | Red | Black | Yellow | Violet | Pink | Aqua |
| Colour code | B | O | G | N | S | W | R | K | Y | V | P | A |
Technical Data of Armored Unitube Cable
| Model | GYXS/GYXTW-14~24Xn | ||
| Attenuation | G652 | ≤0.36dB/km@1310nm | ≤0.22dB/km@1550nm |
| G655 | ≤0.40dB/km@1310nm | ≤0.23dB/km@1550nm | |
| 50/125 | ≤3.0dB/km@850nm | ≤1.0dB/km@1300nm | |
| 62.5/125 | ≤3.0dB/km@850nm | ≤1.0dB/km@1300nm | |
| Bandwidth | 50/125 | ≥400MHz·km@850nm | ≥800MHz·km@1300nm |
| 62.5/125 | ≥160MHz·km@850nm | ≥500MHz·km@1300nm | |
| Tensile strength | Long term | 1000N | |
| Short term | 3000N | ||
| Crush resistance | Long term | 1000N/100mm | |
| Short term | 3000N/100mm | ||
| Operating temperature | -40℃~ 70℃ | ||
| Storage temperature | -40℃~ 70℃ | ||
| Bending radius | Static: 10D | ||
| Dynamic: 20D | |||
| Cable diameter | Approx.12.0mm | ||
| Cable weight | Approx.147kg/km | ||
| Sheath thickness | Average 2.8 mm | ||
Standard
Our armored unitube cable is fabricated according to YD/T 789-2003 standard.
Application
The armored unitube cable allows duct, aerial, underwater and direct burial installations, and it has been universally adopted in core network, access network, metropolitan area network and so on.
