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Cable de fibra óptica aérea GYTC8S Fig-8 | G.652D / G.655 | Cable autoportante para exteriores con Mensajero de acero
Good mechanical and temperature properties
The stranded wire has high tensile strength, meeting self-supporting requirements and reducing installation costs
Special casing fillers ensure critical protection for optical fibers
Good extrusion resistance and flexibility
PSP enhanced moisture resistance
Steel wire as a central reinforcing member
What is GYTC8S Aerial Armored fiber optic cable
GYTC8S is a figure-8 self-supporting aerial armored fiber optic cable designed for outdoor aerial installations. It combines a steel messenger wire and the fiber optic unit into a single integrated structure with a characteristic “figure-8” cross-section. The fiber unit typically contains several loose tubes stranded around a central strength member, with optical fibers housed inside and protected by water-blocking gel. The cable core is further wrapped with corrugated steel tape armor and covered by a black polyethylene outer sheath. This armored construction provides excellent resistance to moisture, rodent damage, and mechanical stress caused by wind, ice, and temperature changes. Thanks to the built-in messenger wire, GYTC8S can be installed directly on poles without the need for a separate suspension strand, making it a reliable and cost-effective solution for long-span aerial communication networks.
GYTC8S Aerial Armored Fiber Optic Cable Parámetros de especificación
- Parámetros de especificación
- CARACTERÍSTICAS ÓPTICAS
Propiedades ópticas
| G.652 | G.655 | 50/125μm | 62.5/125μm | |
|---|---|---|---|---|
| Atenuación (+ 20 ℃) | ≤ 3,0 dB / km @ 850nm | ≤ 3,0 dB / km @ 850nm | ||
| ≤ 1,0 dB / km @ 1300nm | ≤ 1,0 dB / km @ 1300nm | |||
| ≤ 0,36 dB / km @ 1310nm | ≤ 0,40 dB / km @ 1310nm | |||
| ≤ 0,22 dB / km @ 1550nm | ≤ 0,23 dB / km @ 1550nm | |||
| Ancho de banda (Clase A) | ≥ 500 MHz · km @ 850nm | ≥ 200 MHz · km @ 850nm | ||
| ≥ 1000 MHz · km @ 1300nm | ≥ 600 MHz · km @ 1300nm | |||
| Apertura numérica | 0,200 ± 0,015NA | 0,275 ± 0,015NA | ||
| Longitud de onda de corte de cable | ≤ 1260nm | ≤ 1480nm | ||
| Temperatura de almacenamiento / funcionamiento | -40℃ ~ +70℃ | |||
Technical Parámetros
| Modelo | Recuento De Fibras | Tubos | Diámetro exterior (mm) | Peso (kg / km) | Resistencia a la tracción Largo / Corto plazo N | Resistencia al aplastamiento N / 100mm | Radio de Flexión Estático / Dinámico |
| GYTC8S-2 ~ 6F | 2~6 | 1 | 9.2*18 | 215 | 600/1500 | 300/1000 | 10D / 20D |
| GYTC8S-8 ~ 12F | 8~12 | 2 | 9.2*18 | 215 | 600/1500 | 300/1000 | 10D / 20D |
| GYTC8S-14 ~ 18F | 14~18 | 3 | 9.2*18 | 215 | 600/1500 | 300/1000 | 10D / 20D |
| GYTC8S-20 ~ 24F | 20~24 | 4 | 9.2*18 | 215 | 600/1500 | 300/1000 | 10D / 20D |
| GYTC8S-26 ~ 30F | 26~30 | 5 | 9.2*18 | 215 | 600/1500 | 300/1000 | 10D / 20D |
Estructura y Composición del Producto
Color stripe – Colored stripes embedded in the PE sheath for quick cable identification and polarity distinction.
Suspension wire – Stranded high-carbon steel messenger wire providing self-supporting tensile strength.
Connector – The PE web (neck) linking the messenger unit and the fiber unit into a figure‑8 shape.
Optical fiber – The core silica glass fiber carrying the optical signal.
Loose tube – A buffer tube housing the fibers and giving them freedom from strain.
Fiber grease – Thixotropic water‑blocking gel inside the loose tube, protecting fibers from moisture and stress.
Water‑blocking material – Cable‑filling compound or water‑swellable yarns preventing longitudinal water migration in the core.
Steel‑plastic composite tape – Corrugated steel tape with copolymer coating applied as armor for rodent resistance and crush protection.
PE sheath – Black high‑density polyethylene outer jacket providing weather, UV and moisture resistance
Beneficios de GYTC8S Aerial Armored Fiber Optic Cable
Mechanical and Temperature Reliability
GYTC8S aerial armored fiber optic cable delivers good mechanical and temperature performance, making it suitable for demanding outdoor aerial installations.
Self-Supporting Figure‑8 Design
Its figure‑8 self‑supporting design features a high‑tensile stranded steel messenger wire integrated with the fiber unit, which eliminates the need for a separate suspension strand and significantly reduces installation costs. A central steel wire further reinforces the core, adding structural stability.
Armor with Crush and Moisture Resistance
The corrugated steel‑plastic composite tape (PSP) armor provides excellent crush resistance and flexibility, while also enhancing moisture protection for the entire cable construction.
Critical Optical Fiber Protection
Special filling compounds applied in the loose tubes and cable core ensure critical protection for the optical fibers, safeguarding them against water ingress and mechanical stress.
Aplicaciones de Ingeniería GYTC8S Aerial Armored Fiber Optic Cable
Aerial (self-supporting):
Installed without a separate messenger wire. Ideal for rural FTTx and last-mile access. One-step pulling reduces labor and time.Duct:
Can be pulled into microducts or standard conduits. The compact figure-8 design still fits, though the steel messenger adds some stiffness. Suitable for short urban duct sections.
Duct:
Can be pulled into microducts or standard conduits. The compact figure-8 design still fits, though the steel messenger adds some stiffness. Suitable for short urban duct sections.
Direct burial:
Resistant to rodents due to the steel messenger and PE sheath. However, rocky terrain may require additional sand bedding or protective conduit. Not the first choice for long burial runs – GYTS is better for high crush environments.
Envío y embalaje
Packaging Requisitos:
- 1: Todos los cables se enrollarán en carretes de madera tratados que no se puedan devolver
- 2: Los extremos del cable deben estar firmemente asegurados al carrete y protegidos con waterproof tapas retráctiles
- 3: Cada carrete debe incluir:
Una capa exterior protectora de envoltura de plástico
Refuerzo de listones de madera para garantizar la estabilidad.
Al menos 1 metro de extremo de cable libre reservado para pruebas
Una longitud de carrete estándar de 3000 mm (con una tolerancia permitida de ± 2%)
Cable Identification:
The outer jacket must display:
- 1、Unique sequential numbering every 1m (±1% variance permitted)
- 2、 Additional repeating markings at 1m intervals showing:
Product code and fiber count
Manufacturer identification
Production date (month/year)
Total cable length
Standard Packaging Dimensions:
| Length | Container | Size (L×W×H) | Net Mass | Total Mass |
|---|---|---|---|---|
| 2 km | Wood spool | 90×75×90 cm | 156 kg | 220 kg |
| 3 km | Wood spool | 100×68×100 cm | 240 kg | 280 kg |
| 4 km | Wood spool | 109×75×109 cm | 300 kg | 368 kg |
| 5 km | Wood spool | 129×72×129 cm | 400 kg | 480 kg |
Technical Reference:
- 1、 Standard cable diameter: 10.0mm
- 2、Maximum span distance: 100m
- 3、Contact sales team for complete technical specifications
Spool Marking Standards:
Permanent markings (minimum 25-30mm height) must appear on both sides of each spool:
- 1、 Company name and trademark
- 2、Contained cable length
- 3、Cable specifications (type/fiber count)
- 4、Winding orientation
- 5、Weight measurements (gross/net)
Note: All wooden packaging materials must undergo proper fumigation treatment prior to use.
Comparación de productos：
GYTC8S vs GYXTC8Y vs ADSS
| Feature / Dimension | GYTC8S (Stranded Steel + PSP Armor) | GYXTC8Y (Central Tube Loose Lightweight) | ADSS (All-Dielectric Self-Supporting) |
|---|---|---|---|
| Structure Type | Stranded loose tube around central metal strength member; PSP steel tape armor; integrated steel messenger; PE sheath; “8” shaped cross-section. | Central loose tube with two parallel steel wires; steel messenger integrated; smaller diameter; lightweight; “8” shaped cross-section. | Non-metallic; aramid yarn or FRP strength members; no metallic components; single/double sheath; UV-stabilized PE or AT outer sheath. |
| Strength / Armor | Central steel strength member + PSP steel tape armor + steel messenger. Robust mechanical protection, excellent crush resistance, anti-rodent, bullet-resistant. | Two parallel steel wires + steel messenger. No steel tape armor, lower side pressure resistance, more flexible but less mechanical protection. | Aramid yarn as strength element; no metallic armor; relies on high-tensile aramid for span capability; no rodent/bullet protection. |
| Fiber Core Capacity | 2 – 288 cores. Stranded design accommodates high core counts. | 2 – 60 cores. Central tube design limited to smaller core counts. | 2 – 288 cores (or higher). Stranded design supports high core counts. |
| Typical Applications | Self-supporting aerial, duct, light direct burial. Ideal for long-haul backbone, metropolitan networks, rural/urban access, harsh mechanical environments. | Self-supporting aerial, duct. Best for access networks, FTTH, low-core-count aerial deployments where lightweight and cost are primary concerns. | Self-supporting aerial near power lines (110kV+). Power utility communication, cross-river/valley spans, lightning-prone areas, high EMI environments. |
| Engineering Pros | ① High crush and tensile strength (short-term 8000N, long-term 3000N); ② PSP steel tape armor provides excellent moisture barrier, rodent/bullet resistance; ③ Stranded design supports large core counts up to 288 cores; ④ Integrated steel messenger enables fast one-time installation; ⑤ Good sag performance under wind/ice loads. | ① Lightweight (~70% of GYTC8S weight), easier to handle; ② Lower material cost – economical for small core count projects; ③ Small diameter, low wind/ice load; ④ Faster installation in low-stress routes; ⑤ Suitable for 50-100m typical spans. | ① Fully dielectric – no grounding required; ② Immune to EMI and lightning strikes, safe near high-voltage lines; ③ Long span capability (up to 1000m+); ④ Excellent environmental durability (corrosion-free, UV resistant); ⑤ Low long-term maintenance when properly installed. |
| Engineering Cons | ① Heavier than ADSS and GYXTC8Y – higher transport cost, more labor for handling; ② Steel components require grounding near power lines; ③ Susceptible to galvanic corrosion in coastal/humid environments if sheath damaged; ④ Steel messenger adds wind/ice load. | ① Limited core count, not suitable for backbone/high fiber demand; ② No steel tape armor – vulnerable to rodent attack and side pressure; ③ Not recommended for direct burial or harsh environments; ④ Shorter lifespan in corrosive environments due to steel messenger. | ① Higher material and hardware cost (specialized fittings, dampers); ② Requires precise sag-tension engineering – complex installation; ③ Aramid strength element susceptible to creep over decades; ④ AT sheath required for voltages >110kV, increasing cost; ⑤ Not suitable for direct burial or mechanical protection applications. |
| Cost (Relative) | Medium to high – stranded design, steel tape armor, and high tensile strength increase manufacturing cost. Higher than GYXTC8Y but lower than ADSS for equivalent core counts. Ideal for applications balancing mechanical robustness and cost. | Lowest – central tube design requires less material, lightweight reduces transport cost. Most economical choice for low-core-count (≤60 cores) aerial projects without extreme mechanical demands. | Highest – aramid yarn and precision engineering increase material cost; specialized hardware and dampers add project expense; higher upfront investment but lower TCO over 30-year lifespan. |
| Maintenance Difficulty | Moderate – PSP steel armor reduces fault rate; steel messenger requires periodic inspection for corrosion; need to check grounding connections; heavier structure makes mid-span repairs more difficult. | Low – simple structure, lightweight, easy to handle. However, lack of armor means higher risk of rodent/impact damage, requiring more frequent visual inspections. | Low – no corrosion risk; periodic sag inspection sufficient; specialized repair requires trained personnel; no grounding maintenance needed. Lowest long-term maintenance workload. |
| Span Capability (typical) | 100 – 500 meters (depends on core count and design). e.g., 100m span for 2-30 cores at 0.5% sag. | 50 – 100 meters (standard design). Optimized for short span aerial access routes. | Up to 1000+ meters (with appropriate aramid content). Can exceed 500m in standard designs; special designs for river crossings. |
| Flame Retardancy | None – PE sheath burns with smoke. Not suitable for indoor or fire-sensitive areas. Flame-retardant variant (GYTCZS) available with LSZH. | None – PE sheath, same as GYTC8S. | None (standard). Flame-retardant variant available with LSZH or AT sheath. |
GYTC8S Aerial Armored Fiber Optic Cable Guía de selección
Engineering selection between GYTC8S, GYXTC8Y, and ADSS:
For general outdoor aerial deployment where mechanical robustness and medium-to-high core counts are required, GYTC8S is the preferred choice. Its stranded loose tube design supports up to 288 fibers, and the PSP steel tape armor provides excellent crush resistance and moisture barrier, making it suitable for rural backbone networks, metropolitan area networks, and routes where rodent protection is necessary. For low-core-count aerial projects with tight budget constraints and short spans (50–100m), GYXTC8Y offers the most economical solution. Its lightweight central tube design reduces transport and handling costs, making it ideal for FTTH drop segments, small-scale access networks, and low-density rural deployments where mechanical stress is minimal.
For high-voltage power utility communication, cross-river or valley spans (up to 1000m+), and environments with severe lightning or electromagnetic interference, ADSS is the mandatory choice. Its all-dielectric construction eliminates induced currents and grounding requirements, ensuring safety near energized lines. ADSS dominates in corrosive coastal areas and extreme weather regions, offering the longest maintenance-free lifespan over 30 years, though its upfront material and installation costs are highest.
Environmental and power line considerations:
GYTC8S and GYXTC8Y contain steel messengers and cannot be used on power line poles without proper grounding and electrical clearance. They are designed for standalone telecommunications poles in rural roadsides, urban streets, and dedicated telecom rights-of-way. ADSS, being fully dielectric, can be directly attached to power line structures (110kV+), providing a unique advantage in power utility networks.
Cost‑performance summary:
GYXTC8Y offers the lowest initial cost for small-core-count aerial deployments and is the fastest to install, but has the shortest service life in harsh conditions.
GYTC8S provides the best balance of cost, mechanical protection, and core capacity for general outdoor backbone networks, with a design life of 20–25 years when properly maintained.
ADSS requires the highest upfront investment but delivers the lowest total cost of ownership over 30 years in demanding long-span, corrosive, or high‑voltage environments, especially when factoring in reduced maintenance and elimination of grounding costs.
installation instruction for GYTC8S cable:
GYTC8S cable is installed by directly suspending its integrated steel messenger wire between poles using suspension clamps and dead-end hardware—no separate support strand is needed. The fiber unit hangs below, and proper sag and tension must be maintained. After stringing, fibers are accessed and connected inside weatherproof splice closures at designated points. Standard aerial installation practices apply, with care taken to avoid excessive bending, twisting, or mechanical damage.
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GYTC8S Aerial Armored Fiber Optic Cable FAQ
1. ¿Qué es un cable de fibra óptica Fig-8 y por qué elegir GYTC8S?
GYTC8S es un cable autoportante Fig-8 que combina el núcleo de fibra óptica y el cable mensajero de acero en una sola estructura. Este diseño lo hace ideal para la instalación aérea en postes de servicios públicos, simplificando el despliegue y reduciendo los costes.
2. ¿Cuál es el papel del cable de mensajero de acero en este cable?
El galvanized cable mensajero de acero proporciona mechanical soporte, lo que permite que el cable se suspenda directamente entre los postes sin necesidad de hardware de soporte externo. Es especialmente adecuado para tramos de 50 a 150 metros.
3. ¿Es GYTC8S resistente a los desafíos ambientales?
Sí. Cuenta con una stranded estructura de tubo suelto, water-blocking gel, funda exterior PE, y está blindado para UV, humedad y resistencia mecánica, lo que lo hace adecuado para uso en exteriores en climas variados .
4. ¿Qué tipos de fibra y capacidades están disponibles?
GYTC8S admite fibras monomodo G.652D y G.655, normalmente de con 2 a 144 núcleos, que cumple con los requisitos de la red de acceso y distribución.
5. ¿Dónde se usa más este cable?
Este cable se utiliza ampliamente en:
FTTx despliegues de última milla
Despliegues de banda ancha rurales o suburbanas
Instalaciones montadas en postes de telecomunicaciones o servicios públicos
Low-cost rutas de fibra aérea
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