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The way of entering the home for the fiber optic cable

source: author: Release time:2021-01-13 10:50:17 Views

In FTTH project, the user indoor wiring is the most complex link, and many factors are considered. The traditional single core indoor optical cable can not meet the requirements of FTTH project at this stage.

  In FTTH project, the user indoor wiring is the most complex link, and many factors are considered. The traditional single core indoor optical cable can not meet the requirements of FTTH project at this stage.

  As a substitute of traditional indoor optical cable, leather cable can adapt to most indoor wiring conditions, such as turning with a bending radius of 20 mm, bearing the side pressure of people stepping on the optical cable, and the pulling force brought by engineering construction drag.

  At the same time, with a variety of field connectors, it can realize the field termination and docking in the shortest time. Therefore, the leather cable is the best choice for FTTH indoor wiring.

  Vertical and horizontal wiring in the building

  Like the indoor wiring of users, leather cable is also suitable for vertical and horizontal wiring in buildings. Horizontal wiring is not very strict for optical cable, but vertical wiring must have certain tensile strength.

  The maximum tensile force of leather cable is 200N in short term and 100N in long term, so the construction safety and performance stability of leather cable vertical wiring can be ensured within a certain height range.

  Self supporting overhead indoor wiring

  Due to the metal suspension unit, the self-supporting "8" type optical cable has stronger tensile performance and can withstand a span of 50 meters. The optical cable is laid in an overhead way outdoors. Before entering the house, the metal suspension unit is cut off and fixed on the special fixer. After stripping the metal suspension, the remaining optical cable is led into the house with leather cable.

  Indoor wiring

  Because the pipeline mapping optical cable is harder and has higher tensile strength than the leather cable, and the optical cable contains water blocking material, which can reduce outdoor rain erosion, it is more suitable for long-distance outdoor pipeline laying.

  The pipeline mapping optical cable adopts all non-metallic structure, so as to avoid thunder entering the room. After the optical cable enters the house, the outer protective layer, water blocking material and reinforcement are stripped, and the middle leather cable is directly used for indoor wiring, which inherits all the advantages of leather cable indoor wiring, and reduces the link of outdoor and indoor optical cable connection.



  在FTTH工程中,用户室内布线是最为复杂的环节,考虑的因素较多。既要保证线路安全,又要兼顾室内美观,同时还要施工便利,传统的单芯室内光缆已不能满足现阶段FTTH工程室内布线的要求。

  皮线光缆作为传统室内光缆的替代品,可以适应大多数室内布线条件,例如能以20mm的弯曲半径转弯,可以承担人踩在光缆上面的侧压力,及工程施工拖拽带来的拉力。

  同时,配合多种现场连接器,可以在最短时间内实现现场成端、对接。所以,皮线光缆是FTTH室内布线的最佳选择。

  楼内垂直水平布线

  与用户室内布线一样,皮线光缆也适合于楼内垂直水平布线。水平布线对光缆要求并不十分苛刻,但垂直布线必须要求光缆具备一定强度的抗拉性能。

  皮线光缆最大可承受短期200牛顿、长期100牛顿的拉力,因此可以保证在一定的高度范围内,皮线光缆垂直布线的施工安全和性能稳定。

  自承式架空入户布线

  自承式“8”字布线光缆由于具有金属吊线单元,所以抗拉性能更强,可承受50米的跨距。光缆在室外以架空方式敷设,入户前将金属吊线单元剪断,固定在专用固定器上,剩余光缆剥离金属吊线后采用皮线光缆引入室内。

  管道入户布线

  由于管道映射光缆相比皮线光缆较硬,抗拉强度更高,同时光缆内含阻水材料,可减少户外雨水侵蚀,所以比较适合较长距离户外管道敷设。

  管道映射光缆采用全非金属结构,从而避免了引雷入室。光缆入户以后,剥离其外护层、阻水材料及加强件,直接用中间的皮线光缆进行室内布线,继承了皮线光缆室内布线的所有优势,同时减少了室外室内光缆接续的环节。

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