Aerial fiber optic cable Installation
1. Dead end pole: Dead end pole is a utility pole by which self-supporting figure 8 aerial cable or a metallic messenger is tensioned and terminated into a dead-end fixture.
2. Messenger span: Messenger span refers to the duration of constant metallic messenger tensioned between two dead-end poles.
3. Intermediate poles: Intermediate poles are all the poles between two dead-end poles.
1. Careful preparation and preparation are essential before any aerial cable installations. Through the cable route survey, representatives from all needed parties including resources, street depart, etc should be present. Before also detailed planning starts, endorsement must be become from all involved functions. Sufficient clearance for new cable across the right-of-way is confirmed through the path study.
2. Existing poles is used whenever possible to save cost.
3. Where on a-pole to position the aerial fiber optic cable? Fiber optic cables weigh not as much as comparable copper cables also sag less, so fiber optic cables should entertain the uppermost available communications area on a pole.
4. Adequate clearances must certanly be maintained between fiber optic cables and electric power cables on joint-use poles. You'll want to relate to current National electric protection Code the correct clearances.
5. Existing dead-end pole must certanly be evaluated to see whether or not they can resist the stresses during aerial cable installation. You need to evaluate whether short-term guying is needed to be able to alleviate the temporary unbalanced loading during cable installation.
6. Splice areas. Splice areas usually are selected during cable route review. These are generally chosen to accommodate the longest feasible constant cable covers and at least range splices. They should be readily available to a splicing automobile.
7. Aerial installation shouldn't be performed in damp problems. While making yes all workers tend to be precisely trained for pole range work.
8. Fiber optic cables (including all dielectric cables) should really be correctly grounded when put in near high-voltage energy cables.
Fiber optic cable aerial set up can be carried out in two methods
1. Lashing a fibre optic cable to a steel messenger
a metal messenger is first put in involving the poles. After that a cable reel trailer and truck are accustomed to pull the cable over the messenger. A cable guide and cable lasher are accustomed to wrap-around both the messenger together with fiber cable to secure the fibre cable to your messenger. Following the cable lasher is an aerial container truck making necessary corrections.
At each and every pole, the fiber optic cable kinds a development loop to allow for expansion of this messenger. The growth loop's sizes have actually both a length and a depth, its length must certanly be bigger than twice its level. The fiber cable must also maintain steadily its minimum flexing distance all of the time.
2. Direct installation of self-supporting figure 8 aerial fiber optic cables
Self-supporting (Figure-8) optical fiber cables significantly simplifies the duty of putting dietary fiber optic cables onto a aerial plant. The self-supporting figure-8 cable incorporates both a steel messenger together with fiber cable into an individual coat of Figure-8 cross-section.