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Installation Conduction for Duct Fiber Optic Cable
Installation for fiber optic cable from Changguang Communication (Chinese Manufacturer of Fiber Optic Cable)
1.1 cable bend radius should be not less than 15 times the cable diameter, the construction process of not less than 20 times.
1.2 cable laying traction should not exceed 80% of the cable to allow the tension. Instantaneous maximum traction cable must not exceed 100% of the allowed tension. It should be added to the primary traction cable reinforcement (core) on.
1.3 traction cable ends can be pre-spot production. Buried or underwater armored cable can be used for nets or towing ends.
1.4 In order to prevent damage to the cable in the reverse process of traction, traction should be added between the tip and the pulling cable swivel.
1.5 laying fiber optic cable, fiber optic cable from above must release the disc and hold slack arc. Cable laying process should be no twist is prohibited to play a small circle, surging phenomenon.
1.6 cable laying with mechanical traction, traction should be based on the length, terrain, and other factors chosen focus pulling tension traction, intermediate or dispersed auxiliary traction traction mode.
1.7 Mechanical traction tractor shall meet the following requirements:
1) Traction speed adjustment range shall be 0 to 20 m / min, stepless adjustment method should be;
2) Traction tension can be adjusted, and has automatic shutdown feature that when traction exceeds a predetermined value, can automatically send alerts and stop pulling.
1.8 cable laying, well-organized and have someone must command. Traction process should have good means of communication. Prohibit untrained staff induction and without contact tool case work.
1.9 cable laying is completed, check the fiber is good. Cable ends should be sealed container, and may not flooding.
2, the cable conduit
2.1 should make the following preparations before cable laying pipe
1) according to the design check the cable hole position occupied;
2) on the same route selected holes should not be changed, such as changes or turning, should meet the requirements of the cable bend radius;
3) The hole must be cleared with a clean brush.
2.2 Artificial laying cable hole should everyone was on duty; mechanical laying cable manholes should turn someone on duty.
2.3 cable penetration hole or pipe bend or cross, the guide device should be used to protect or flare tube can not damage the cable outer sheath. It can be applied around the cable neutral lubricant as needed.
2.4 once the traction cable length is generally not more than 1000 meters. 8 words long should take the middle segment of traction or auxiliary traction.
After 2.5 cable laying, unified command by hand, one by one individual to the cable hole placed on the pallet specified, and should remain adequate margin to avoid the cable stretched too tight.
2.6 manhole where the cable connector reserve length should comply with the provisions of the table; reserved for special design requirements of the cable stretched too tight.
2.7 cable pipe protection measures shall meet the following requirements:
1) who bore the cable can be serpentine hose (or soft plastic tube) to protect and tied on the cable tray or processing required by the design measures;
2) spout closure work should take measures;
3) The cable should manhole identification;
4) cold freezing area design requirements should take measures to prevent cable damage.
2.8 Sub plastic pipe laying and cable laying method is basically the same, shall meet the following requirements:
1) When laying two or more colorless the subject of the sub-pipe, the ends should be prepared to sign;
2) Ambient temperature pipe laying plastic child should -5oC - + 35oC Room;
3) continuous laying plastic child pipe length, not more than 300 meters;
4) the maximum traction tension of the sub-pipe, the pipe should not exceed the tensile strength, uniform traction speed requirements;
5) sub-pipe in a manhole in the excess length shall meet the design requirements;
6) wearing plastic pipe holes, install plastic pipe plug (also use other methods) to secure the sub-pipe;
7) sub-pipe in the middle of the pipeline may not have joints;
8) sub-pipe laying is completed, the nozzle should be used as a temporary blockage; no current project sub-pipe must install clogged pipe end (cap) in.
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