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Transmission line poles
Steel multifaceted transmission line poles are designed for installation in high-voltage power line. Transmission line poles are used in I-V wind and icing zones in populated and unpopulated areas, in accordance with EIC-7 in areas with calculated air temperature to -65°C and higher. Multifaceted metal poles are made of struts in the form of frustrum of pyramids of steel sheet with cross section in the shape of a regular polygon.
Design features of a transmission line pole
- Sections of transmission line poles are interconnected by telescopic or flanged connections.
- Cross-beams of such poles are faceted, lattice or insulating.
- The poles are made of C345 steel according to GOST 27772-88.
- Corrosion protection is made by hot-dip galvanization and zinc-filled composite coating.
- Faceted pole for 110kW power transmission line.
- Transmission line poles are designed individually.
HVL construction time on multifaceted poles have two and four-fold advantage over the HVL on concrete and lattice poles. This is stipulated by the reduction of labor costs due to the increase of span distances, ease of installation of faceted poles, as well as small quantity of assembly elements. The assembly of the pole is extremely simple. First, pole sections are joined using winches - the bottom one with the second one, the second to the third, etc. Usually, a crew of 7-8 people spends about 1 hour. Then cross-beams are fastened to the pole. It takes less than an hour. The pole is installed on the foundation with an ordinary crane as the poles are compact and have light weight. Attached to the foundation with bolts.
Technical specifications of transmission lines poles
|NAME||TYPE*||POLE HEIGHT, M||HEIGHT TO THE LOWER CROSS-BEAM, M||HVL VOLTAGE CLASS||NUMBER OF CROSS-BEAMS||WIND REGION||ICING REGION||POLE WEIGHT, KG|
* P-Intermediate, U-angle
Transmission lines poles are designed individually