What You Should Know About Helical Optical Fittings in TTF Power Systems?

Helical optical cable fittings is one of our best-selling overhead line accessories in our power line hardware product category. TTF Power Systems boast over 20 years of experience of making and selling line construction materials to Africa, United States,and Southeast Asia.

Table of Contents

• Different type of Helical Performed optical cable fittings
  • Helical Performed Deadend Clamps for ADSS Cable
  • Helical Suspension Set for ADSS
  • Helical wire and fittings for OPPC
  • Suspension Set for OPGW
  • Helical Dead-end for OPGW
  • Anticorona Ring
  • Optical Fiber Closure
  • Vibration Damper Armour Rod
  • Cable Storage Assembly
  • Down Lead Clamp
  • Immobility Clamp
• Advantages of Helical optical cable fittings
• The importance of Helical optical cable fittings
  • Frequent asked questions (FAQs)

Different type of Helical Performed optical cable fittings

Helical Performed Deadend Clamps for ADSS Cable

ADSS optical cable strain clamp is mainly used in the connection of ADSS optical cable with strain tower, corner tower and terminal tower. According to distance or tensile strength, ADSS optical cable strain clamp could be divided into three kinds, small span strain clamp, medium-span and big-span strain clamp.

Helical Suspension Set for ADSS

ADSS optical cable suspension clamp is used for hanging and supporting optical cable on the suspension tower. The clamp will transmit axial load and disperse radial stress press and make good protect for optical cable and avoid the abnormal status, such as the optical cable produce too small bend radius and stress concentration. The grip of clamp is larger than 18% of rated tensile strength of optical cable. It has excellent fatigue resistance and auxiliary damping effect for ADSS optical cable.

Helical wire and fittings for OPPC

OPPC is optical fiber phase conductor for short. It is the new special power optical cable by using the principle of optical fiber electromagnetic compatibility, compounding the optical fiber unit at phase line, which has functions of power transmission and fiber communication. When stressed area of OPPC is too small, the stainless steel pipe of optical fiber will become deformed under pressure, which will affect fiber communication, so when make operation OPPC, the crimping clamp fittings for transmission conductor could not be used, but the special designed fittings and accessories should be used, such as preformed armor rod strain fittings, suspension fittings, vibration damper and armor rods etc. For OPPC, optical-electric separation is the most important, so OPPC need equipped with connection box and terminal box.

Suspension Set for OPGW

Helical suspension clamp is used for hanging and supporting optical cable on the suspension tower. The clamp will transmit axial load and disperse radial stress press and make good protection for optical cable and avoid the abnormal status, such as the optical cable produce too small bend radius and stress concentration. The grip of clamp is larger than 18% of rated tensile strength of optical cable. It has excellent fatigue resistance and auxiliary damping effect for power optical cable.

Helical Dead-end for OPGW

Helical strain clamp is mainly used in the connection of optical cable with strain town, corner tower and terminal tower. The material of clamp is aluminum clad steel wire or galvanized steel wire with good corrosion resistance; the wire has good mechanical and electrical properties for ensuring the clamp has stronger electrochemical corrosion resistance and anti-fatigue. The clamp grip is not smaller than 95% of rated tensile strength of optical cable. HelicaI strain clamp has characteristics of easy installation, simple and rapid, no special tool required, only one person could finish the operation; It could shorten the construction time greatly. improve the operating efficiency and reduce the operation cost. It is very simple to ensure the installation quality of clamp, inspect with naked eyes on the spot and special training not required. The whole complete set of helical strain clamp includes: external-layer helical armor rods, internal-layer helical armor rods, assorted connector and ground wire etc.

Anticorona Ring

It is used in the electric transmission line with voltage of 110KV and above. When erect ADSS optical cable on same pole or tower, the optical cable is in higher space potential, the end of helical armor rod is easy to cause anticorona ring, and pose threat to safe run of optical cable. So this anticorona ring is mainly for changing the status of electric field of end of helical armor rod, improving corona starting voltage as more than 1 times. The material of anticorona ring is high quality aluminum alloy rod.

Optical Fiber Closure

Optical cable connection box is mainly used in protecting the splices of optical fibers between two sections of optical cable, reserving a section of optical fiber in the connection box for maintenance.

Vibration Damper Armour Rod

Normally used for the anti-shaking facilities of OPGW optical cables, and also ADSS Optical cables.

Cable Storage Assembly

The rest cable stand is used in collecting reserved optical cable on the connecting tower (pole), on strain tower (pole) generally.

Down Lead Clamp

It is used in fixing OPGW optical cable or ADSS optical cable on the tower. It is suitable for cables with different diameters. It is reliable and easy to install.

Drop clamp has two types, one is for pole and the other is for tower. ADSS optical cable adopts rubber clamp in generally, OPGW optical cable adopts metal clamp.

Immobility Clamp

The fastening clamp could fix or connect different clamps on the steel tower or pole. It has pole type and tower type according to the lines characteristics. The tower type is metal splint, it fixes different clamps on the iron town without damage of iron tower strength. Pole type is hold hoop. Tension splint is used for corner tower or terminal tower, it provides hanging point to ADSS optical cable erection. The straight splint is used for tangent tower, it provides hanging point to ADSS optical cable. The hold hoop fix the strain clamp and suspension clamp on the pole, and provide hanging point to ADSS optical cable erection.

Advantages of Helical optical cable fittings

It can take place of customary bolt-type strain clamps, wedge-type performed cable clamps, and compression- type cable clamps. The notable advantages:

• The tubular construction framed by the legs of the pre-bent wire is normally twisted on the wire. The clamp has high strength and dependable grasp. The hold strength of the clamp isn’t under 95% RTS (rated tensile strength);
• The pressure dispersion of the wire clamp to the wire is uniform, without harming the wire, further developing the anti- vibration capacity of the wire, and enormously expanding lifespan of the wire;
• Simple installation. They can extraordinarily shorten the assembling time, with next to no extraordinary apparatuses. There is no need to use with other weighty generators and other electrical equipment. One individual can finish the practice.
• The installation outcome of the helical fitting is not difficult to ensure and can be examined with the naked eye without specific training.
• Good anti-corrosion nature, the material is the very same as the wire, to guarantee that the clamp has major areas of strength for bearing electrochemical erosion.

The importance of Helical optical cable fittings

Helical optical fittings are an important part of power transmission lines, and are used in a wide range and in large quantities. The pre-twisted fittings have a performance that surpasses ordinary power fittings in an all-round way, and are suitable for power transmission lines in various working conditions. Considering the long-term operation of the line, the use of pre-twisted fittings can not only improve the safe and stable operation level of the power transmission line, reduce the adverse effects of the fittings on the wires, but also reduce the operating energy consumption of the line and prolong the service life.