Common accident phenomena and prevention methods of ADSS optical cables

The first thing to state is that in the selection of ADSS optical cables, priority should be given to manufacturers
with a large market share.
They often guarantee the quality of their products in order to maintain their credibility
.
In recent years, the quality of domestic ADSS optical cables has improved rapidly, and the after-sales service and tracking management are also relatively complete with sophisticated production technology, and have excellent stress and strain performance
.

ADSS cable features:

1.
ADSS optical cable is hung on the inside of the cable and can be continuously erected; 2.
Light weight, small cable warp, small load on pole tower; 3.
Large span, up to 1200 meters; 4.
Polyethylene sheath is adopted, which has good electrical corrosion resistance; 5.
Non-metallic structure, lightning protection; 6.
Imported aramid, good tensile and temperature performance, suitable for bad weather such as the north; 7.
Long service life, service life up to 30 years
.

Prevention methods of ADSS cables:

1 Appearance damage: because some optical cable lines are through hills or mountains, rocky, thorny grass, optical cable is easy to rub on trees or rocks, easy to scratch, or bent, especially the optical cable sheath is worn, the surface is not smooth, in use due to dust and salt environment, it is easy to occur electrical corrosion, causing great harm
to the service life.
There must be multiple people to supervise during construction, and carefully check the preparation before
towing.

2 Optical fiber and high loss point: the phenomenon of fiber breaking and high loss point are due to the local force caused by the construction pay-off process, in the process of deployment, the jumping wheel of the optical cable, the speed is uneven, the force is not constant, the diameter of the corner guide wheel, and the phenomenon of the circular of the optical cable, etc.
, will be caused, sometimes found to break the center FRP, because the center FRP is a non-metallic material, the optical cable is stretched and then retracted, the disconnection will be misaligned, the broken FRP will hurt the fiber loose tube, so as to hurt the optical fiber, light caused by high loss points, Fiber
breakage occurs in heavy cases.
This phenomenon is also a relatively common failure, many people will think that it is the quality of the optical cable, but it is actually caused by accidents during construction
.
Therefore, constant tension control during construction is very important, and it must be at a constant speed
.

3 Fiber breaking failure: The fiber breaking fault of the tensile end is also one of the more frequent accidents, often occurring near the tensile fittings (pre-stranded wire), within 1 meter from the fittings end, and there are also parts led down from the tower behind the fittings, the former is often caused by improper operation when pre-stranded fittings, the latter is often due to inconvenient terrain, the angle of the traction end is too small when the line is tightened, or the tower (rod) occurs for a short time of extra small force bending radius, so that the optical cable is caused by local force
。 During construction, it should be noted that the direction of traction should be consistent with the direction of the optical cable, so that the optical cable can be stressed
in a straight line.

Because the optical cable sheath material and the stressed elements are very good elastic performance, often after the optical cable is subjected to a short period of force, the surface of the sheath will not appear obvious scars, and the optical fiber components inside have been damaged by force, at this time most people will think that the quality of the optical cable itself is a problem, which will cause misjudgment of the problem
.
I hope to give a judgment
when analyzing and dealing with such phenomena.
Pay attention to the protection of ADSS optical cables, and optical fiber resources should be uniformly planned and managed by the provincial power communication supervisor; It is clarified that the power line maintenance department is responsible for the operation and management of ADSS optical cables, and the relevant departments should be notified in time for the change of power line operation mode or the reconstruction of the line; Establish and improve the regular line patrol system, check various protective measures, hang warning signs, and find that the optical cable is damaged or galvanic corrosion occurs, and should contact the design department, manufacturer and construction department in time to analyze the cause and formulate solutions; For the optical cable laid in the cable trench, the three prevention should also be done, and the professional competent department should be notified in time if the abnormality is found, and the optical cable in the cable trench has been bitten off twice in our province
.

According to the characteristics of ADSS optical cable and the line, it is equipped with a certain number of spare optical cables and spare fittings and a certain number of connection boxes and accessory materials for line emergency repair
.
It should also be equipped with corresponding instruments and special tools such as OTDR, welding machine, cutting knife, optical power meter, optical fiber stripping pliers, etc.
, DSS optical cable line maintenance and operation management should also be adapted to local conditions, flexible use, should be as far as possible to explore our own experience
.
Make ADSS fiber networks better serve
electricity production.