Metal supports of power transmission lines

Metal structures of steel supports for high voltage lines of 35, 110, 220, 350, 500, 750 kV. Structures may be delivered in accordance with the customers' drawings of the metal structures.

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Metal supports of power transmission lines

Anchor-corner supports of high-voltage lines 35kV

  • Intermediate free-standing supports of high-voltage lines 110kV
  • Anchor-corner supports of high-voltage lines 110kV
  • Intermediate free-standing supports of high-voltage lines 220kV
  • Anchor-corner supports of high-voltage lines 220kV
  • Intermediate free-standing supports of high-voltage lines 330kV
  • Anchor-corner supports of high-voltage lines 330kV
  • Intermediate supports of high-voltage lines 500kV with guy lines
  • Anchor-corner tripple-post free-standing supports 500kV
  • Intermediate supports of high-voltage lines 750kV with guy lines
  • Anchor-corner tripple-post free-standing supports 750kV
  • Anchor-corner free-standing supports 500kV

The range of our structures used for the erection of overhead lines includes:

  • end supports,
  • intermediate metal supports,
  • anchor-corner support structures,
  • special supports.

Steel structures for high-voltage lines are made of heavy-duty steel. Anticorrosive coating ensures at least 30 years of service for power transmission lines.

Use of metal supports of power transmission lines

 

Modern metal supporting structures are an excellent alternative to short-term and impractical wooden supports, as well as reinforced concrete pillars prone to cracking and chipping.

Metal structures are mainly delivered to the site disassembled, which expands the possible use of various modes of transport and optimizes the costs of transportation. The frame or grid supports are assembled in place by fastening the elements with bolts or by welding.

Metal supports of power transmission lines show high strength, they are easy to service and perfectly resist aggressive environments. They are designed for use in a wide range of climatic zones: from regions with tropical climate and steppes with strong winds, to mountainous areas with sharp changes in temperatures and northern latitudes with extreme frosts down to 65 Celsius degrees.

Metal supports are suitable for end sections of the line with especially high loads. Faceted support structures are also no less effective for use in complex natural landscapes: in the mountains, near various water bodies and in places with significant differences in altitude.

Metal products for power transmission lines are great for the city, because are characterized by a small land plot, and their high strength and relatively low weight make it possible to erect structures that considerably exceed the height of reinforced concrete and wooden supports.

Types of unified metal supporting structures

Intermediate supports:

  • support electric wires, ground wires;
  • are intended for straight line sections;
  • exclude all kinds of loads except horizontal and vertical.

Supporting anchor structures:

  • are characterized by high strength;
  • are used on straight sections of overhead lines;
  • reduce the length of the anchor spans;
  • are designed for sections of lines with complex conditions: transitions through bridges, tunnels and other engineering constructions, in places of change in quantity, grade or section of electric wires.

Corner supports:

  • have a strengthened construction;
  • are mounted in the places of rotation or change in direction of the high-voltage line;
  • there are two types of corner supports: corner intermediate for turns with an angle of less than 30 degrees; Anchor-corner type for angles over 30 degrees.

End supporting structures:

  • “start” or terminate the overhead line;
  • perceive the load from unilateral traction of wires and cables.

Special supporting structures:

  • several types are distinguished depending on the functions performed: transitional, transpositional, cross, branching and anti-wind.

The use of metal structures for the construction of high-voltage transmission lines and configuring power facilities has the following economic benefits:

  • reduced maintenance and repair costs of power transmission lines: a highly effective anticorrosion coating protects metal supports against the destructive effect of natural phenomena; the supports serve 30 years or more, without requiring special maintenance, except for periodic re-coating (galvanizing does not even require painting);
  • possible erection of high-voltage transmission lines of high mechanical strength when using structures of relatively low weight: metal supports are many times lighter than reinforced concrete and wooden ones, but withstand equally impressive loads;
  • reduced transportation costs: Metal supports of high-voltage transmission lines are much lighter than wood and concrete structures, which greatly facilitates the delivery of products to the installation site, and due to the use of high-strength steel, metal bases are not damaged during transportation and unloading.

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