Higher and more massive than the intermediate ones — they serve to cross the line over rivers, roads, ravines and other engineering and natural obstacles.
| Type of support | Transitional |
| Designation | pp |
| Voltage classes | 35 kV · 110 kV · 220 kV · 330 kV · 500 kV |
| Design | Lattice, from plate and angle sections |
| Material | Steel 09G2S-12 / S345-3 or St3ps5 / S245, S255 |
| Corrosion protection | Hot-dip galvanising to GOST 9.307-21 |
| Service life | At least 50–70 years without repainting |
| Manufacturing | To standard type designs or to the customer's structural drawings |
| Scope of supply | Shipping sections and fasteners; pile caps and embedded parts on request |
| Documents | Data sheet, steel certificates and corrosion protection documentation |
The tower weight and dimensions are confirmed when the detail drawings are issued for the wind and ice region of the site.
The transition support lifts the wires to a height sufficient to safely cross the barrier. This increases the height, weight and wind load, so the design is calculated separately, rather than being taken from a number of intermediate ones.
Such supports are often painted with red and white stripes and equipped with lighting equipment. To preserve the metal under painting, the structure is pre-galvanized. 110 kV transition supports are manufactured according to standard design 3.407.2-168.
We produce according to standard designs and according to customer's drawings, coated and marked according to project requirements. Shipment of shipping items by road and rail.
We receive the schedule, questionnaire or structural drawings.
We select the types for the route and climatic region and calculate the cost.
We issue working drawings and manufacture the structures with hot-dip galvanising.
Shipped as sections by road or rail.
Height and weight. The transition lifts the wires over an obstacle — a river, a road, a ravine — and is calculated for increased wind load. It is often equipped with light-shielding and red-and-white markings.
According to the standard draft 3.407.2-168. Other voltage classes have their own standard designs, the specific cipher is set by the line design.
The requirement is determined by the height of the structure and proximity to airfields — set by the project. We manufacture the support with preparation for the installation of barrage lights and with red and white coloring, if required.
Yes. Crossings over wide obstacles are almost always individual — we work according to the customer's drawings КМ with the release of working drawings КМД.
Send the tower schedule or the route parameters — we will select the types and prepare a calculation.
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