gui chao cable news: cable construction notes
from：guichao author：admin click： 442 addtime：2017-04-02 09:49:22
1 cleaning and testing
before laying the optical cable, the pipe hole should be cleaned and tested.
when cleaning the use of autocratic cleaning tools, cleaning after the application of the test stick for the test.
the inner diameter of the plastic pipe shall be 1.5 times of the outside diameter of the optical cable. when in a cement pipe hole zhongbu put two or more sub tube,
the equivalent total outer diameter of the pipe shall be less than 85% of the inner diameter of the pipe hole.
2 plastic discharge tube
when the utility model is characterized in that the two ends of the plastic tube are provided with more than two plastic tubes, the end of the tube can not be marked.
if the tubes are of the same color or no color, the end of the pipe shall be marked separately.
the length of the plastic pipe should not exceed 300m, and the plastic pipe shall not be connected in the middle of the pipe.
in addition, in the plastic sub pipe cloth operation, the ambient temperature should be between -5 degrees celsius to 35 degrees celsius,
to ensure its quality is not affected. the plastic pipe to be put in place shall be fixed with the cement pipe in time,
prevention of sliding. in addition, the child will be temporarily blocked nozzle, in order to prevent foreign body into the tube.
the plastic pipe shall be provided with sufficient length in the hole according to the design requirements.
3 cable traction
the length of optical fiber cable should be less than 1000m. beyond this distance,
should be taken to increase the traction or in the middle position of the auxiliary traction mode, in order to reduce the tension and improve the construction efficiency.
in order to protect the optical cable from damage during the process of drawing, the optical cable penetrates into the pipe hole,
when the pipe is in the corner or cross with other obstacles, the protective device should be used, such as a guiding device or a trumpet shaped protective tube.
in addition, it can also be used on the external cable, such as neutral lubricant and other materials, in order to reduce the friction resistance of fiber optic cable traction.
4 allowance
after the laying of the optical cable, the cable shall be placed on the specified pallet in the hole or hand hole one by one,
to prevent the cable is too tight. when the optical cable in the hole or the hand hole needs to be connected, the reserved length shall be in accordance with the minimum value of the relevant regulations.
5 joint treatment
the cable shall not be connected in the pipe hole in the middle of the pipe. when the cable is not connected in the manhole,
the cable is bent to be placed on the optical cable support plate for fixing and binding,
otherwise it will affect the construction and maintenance, but also easily lead to optical fiber damage. when the cable is connected,
the hose should be protected by serpentine hose or flexible plastic pipe and fixed on the pallet.
6 plugging and marking
the outlet of the pipe hole of the optical fiber cable should be tightly sealed to prevent moisture or sundries from entering the pipe.
the optical cable and its connection shall have the identification mark, and indicate the number, type and specification of the optical cable.
in severe cold areas should also take measures to prevent the fiber optic cable damage. such as optical cable may be damaged,
insulation board can be placed on or around the partition protection.