For OPPC phase line fiber optic cable conductor, due to the existence of discharge, over the pulley, tightening the line caused by the structure elongation and operation of the temperature rise in the process of expansion elongation and creep elongation generated by plastic deformation. So the fiber residual length requirements are very strict. Fiber optic units should have good mechanical protection to ensure that the fiber is not extruded. To prevent moisture intrusion and affect the service life of the fiber, the fiber should be placed in a closed tube, or take other moisture-proof measureas.
Then OPPC phase line fiber optic cable wire in the transportation and installation process should pay attention to what issues?
1. The cable tray with fiber optic cable should be rolled in the direction indicated on the side of the plate. Rolling distance should not be too long, and generally should not exceed 20 meters, rolling should pay attention to prevent obstacles to damage the packaging plate.
2. Loading and unloading of optical fiber cable should use lifting equipment such as forklifts or special steps, cable trays from the car directly rolled down or thrown down is strictly prohibited.
3. Forbid the cable tray with optical fiber flat or stacked, in the carriage of the cable tray is required to set up an anti-timber block.
4. Cable should not be reversed several times to avoid the integrity of the internal structure of the cable, cable laying should be inspected before the appearance, check the specifications, number, test length, and attenuation of a single tray inspection and acceptance. Each tray of fiber optic cable in the guard plate with the product factory inspection certificate (should be properly stored for future inquiries), dismantle the cable guard plate to prevent damage to the fiber optic cable.
5. In the construction process should pay attention to the bending radius of the cable shall not be less than the construction regulations, the cable does not allow excessive bending.
6. Laying overhead fiber optic cable should be pulled by pulleys, overhead fiber optic cable to avoid friction with buildings, trees, and other facilities. Avoid dragging the ground or friction with other sharp and hard objects and damage the outer skin of the cable, if necessary, should install protective measures. Forced traction after the cable jumps out of the pulley is strictly prohibited to prevent the cable from being crushed and damaged.
7. The cable line design should try to avoid easy-to-find buildings, such as can not be avoided, the cable should take fire protection measures.
8. In the section on the length of the comparative cable placement construction, if you need to reverse the plate, the cable needs to comply with the "8" plate put. Make the cable in a twisted state.