05. February 2017

Design features of metal poles

Without electricity, it is impossible to imagine the life of a modern person. Electric current is supplied to consumers by means of power lines, during the construction of which metal supports are widely used.

The main purpose of modern metal supports is to maintain high voltage power lines. The range of temperatures at which such structures can be used is extremely wide, which is one of their main advantages.

In the process of designing metal supports it is necessary to take into account the practical side.

Currently, there are three varieties of such designs:

• multifaceted steel;
• gnutoprofilnye;
• lattice.

Modern metal support includes the following structural elements:

• foundation;
• trunk;
• rope-resistant;
• traverses;
• a delay.

The optimum version of these structures is chosen taking into account the magnitude of the voltage of the transported electricity and future operating conditions. Also take into account the strength of the wind, the likelihood of frost and the temperature regime. Consider all factors without exception. Otherwise, the metal support structure simply becomes defective, and to restore its operational properties, you will have to spend significant funds.

Types of metal towers

Metal supports differ also in functional characteristics. By this parameter, the following types are distinguished:

anchor  - are able to withstand the considerable loads created by the tension of the wires, which allows them to be installed in various straight sections;
intermediate  - widely used to support the wires between anchor structures;
   rotary - as you can guess from the name, they are used on the turns of power lines, where there is always a double load;
  terminal  - installed at the ends of the main transmission lines in order to compensate for the cable tension.

Manufacture of metal poles

This is a rather laborious and complex technological process. The quality of manufacturing such load-bearing structures directly affects the safety of power lines for the surrounding people. Despite the use of metal, which is a fairly heavy material, the supports of it have a relatively small weight.
   One of the main advantages of metal supports is an extremely high strength. Isolation of wires is carried out with the use of special devices. Modern metal supports are capable of withstanding significant mechanical loads at any height, thus acting as an ideal means of transmitting electricity over considerable distances.

If you need to transport such structures for a considerable distance, their large dimensions will significantly complicate this procedure. Therefore, to facilitate the task, it is recommended to choose supports equipped with special bolted connections. Although they are significantly inferior to all-metal structures in terms of reliability, and also require much more time for installation, they can be easily delivered to absolutely any place.

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Metal structures for power linesplay an important role in ensuring uninterrupted power supply to consumers. Metal structures include all metal elements necessary for fixing wires to power line supports. In addition to wires to the metal structures, additional and additional structural elements of the transmission lines are attached. Metal structures also ensure the safety of the operation of power lines by protecting them in breaks or short circuits.

Sphereapplication of metal structures for power lines

The variety of serially produced steel structures for power lines allows to cover all possible cases of fastening and connection of the most diverse elements of transmission lines during assembly and repair works. The assortment of metal constructions includes traverses high-voltage and low-voltage, heads and overlays, extensions, brackets, clamps, tighteners and couplers, fastening points and grounding conductors.

The traverses high-voltage and low-voltage provide fastening of wires to supports of transmission lines. The organization of the transition of wires between the suspension brackets when installing the intermediate supports is carried out with the help of headbands and linings. Extensions are used to increase the height of the support when crossing the line with other engineering structures. Auxiliary elements are attached using brackets. Clamps are necessary for securing the traverse to the supports. The purpose of the fastening units is to secure the strut when installing the power line supports.

Manufacture of metal structures for power lines

Industrial-commercial firm "A-Zavod" carries out the manufacture of metal structures for power lines  all types. We offer the manufacture of both standard products presented in the catalog and single samples in accordance with individual orders.

Our production is based on the use of advanced metal processing technologies (laser cutting, welding, bending), the use of high-quality carbon steel, ecological methods of applying protective coatings. The park of modern professional equipment and high experience of the company's specialists guarantee the production of high quality products. The company's products are sold at competitive prices. All metal structures for power lines  meet the requirements of regulatory and regulatory documents in the field of electricity supply to consumers.

Metal poles of power lines  (LEP) are designed for the organization of power lines with a voltage of more than 35 kV. These metal supports are the main constructive element of a complex system for organizing high-voltage lines .

By designation, the transmission line supports are divided into the following:

• Intermediate. They are installed on straight sections of high-voltage transmission line (VL). They are designed only to support wires and cables and are not designed for loads from wire pulling along the line.
• Corner. Installed at the corners of the power line route. At small angles of rotation (up to 15-30 degrees), with small loads, use angular intermediate supports. If the angles of rotation are greater, then angular anchor supports are used, since having a more rigid construction and anchorage of the wires.
• Anchoring. Are installed on the straight sections of the route for passage through engineering structures or natural obstacles, perceive the longitudinal load from the traction of wires and cables. The anchor supports have a rigid and sturdy construction.
• End. They are a variety of anchor supports and are installed at the end or the beginning of the line. Under normal operating conditions, they perceive the load from unilateral tension of wires and cables.
• There are also special supports: transpositional, branching, cross, anti-wind, transitional.

For the installation of power lines, we can produce and supply a special one.

The photo of our poles of transmission lines (LEP)

Manufactured metal supports of transmission lines

Multifaceted power line supports are used for overhead power lines with voltage from 10 kV to 500 kV.