·产品描述 Description

GYFTA53 光缆的结构是将 250μm 光纤套入高模量材料制成的松套管中，松套管内填充防水化合物。缆芯的中心是一根非金属加强芯（FRP），对于某些芯数的光缆来说， 非金属加强芯外还需要挤上一层聚乙烯（PE）。松套管（和填充绳）围绕中心加强芯绞合成紧凑和圆形的缆芯，缆芯内的缝隙充以阻水填充物。涂塑铝带（APL）纵包后挤一层聚乙烯内护套，双面涂塑钢带（PSP）纵包后挤制聚乙烯护套成缆。

The fibers, 250μm, are positioned in a loose tube made of a high modulus plastic. The tubes are filled with a water-resistant filling compound. A Fiber Reinforced Plastic (FRP) locates in the center of core as a non-metallic strength member. The tubes (and fillers) are stranded around the strength member into a compact and circular core. An Aluminum Polyethylene Laminate (APL) is applied around the cable core. Then the cable core is covered with a thin polyethylene (PE) inner sheath, which is filled with jelly to protect it from water ingress.  After a corrugated steel tape armor is applied, the cable is completed with a PE outer sheath.

·产品特点 Characteristics

        · 具有很好的机械性能和温度特性
        · Good mechanical and temperature performance

        · 松套管材料本身具有良好的耐水性能和较高的强度
        · High strength looes tube that is hydrolysis resistant

        · 管内充以特种油膏，对光纤进行了关键性保护
        · Special tube filling compound ensure a critical protection of fiber

        · 良好的抗压性和柔软性
        · Crush resistance and flexibility

        · 采用下列措施来确保光缆的防水性能：
        · The following measures are taken to ensure the cable watertight:

                - 单根非金属中心加强芯
                - Single Fiber Reinforced Plastic as the central strength member

                - 松套管内填充特种防水化合物
                - Loose tube filling compound

                - 完全缆芯填充
                - 100% cable core filling

                - 涂塑铝带（APL）防潮层
                - APL moisture barrier

                - 双面涂塑钢带（PSP）提高光缆的抗透潮能力
                - PSP enhancing moisture-proof

                - 良好的阻水材料防止光缆纵向渗水
                - Water-blocking material

·产品标准 Standards

        GYFTY53 光缆符合 YD/T 901-2001 和 IEC 60794-1 标准
        GYFTY53 cable complies with Standard YD/T 901-2001as well as IEC 60794-1.

·光学特性 Optical Characteristics