Section 2. Sewerage of electricity

Overhead power lines with voltage above 1 kV. Passage of overhead lines along dams and dikes

Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)

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2.5.276. When overhead lines pass through dams, dikes, etc., any distances from undeviated and diverted wires to various parts of dams or dikes in normal operation of overhead lines must be no less than those given in table. 2.5.38.

The vertical distances in normal operation of overhead lines must be taken no less than those given in the table. 2.5.38:

• at the highest air temperature without taking into account the heating of the wire by electric current for overhead lines of 500 kV and below;
• at air temperature according to 2.5.17 without taking into account the heating of wires by electric current at the maximum permissible values ​​of the intensity of the electric and magnetic components of the electromagnetic field for a 750 kV overhead line;
• at design linear ice load according to 2.5.55 and air temperature at ice according to 2.5.51.

Table 2.5.38. The shortest distances from overhead line wires to various parts of dams and dams

2.5.277. When an overhead line passes through dams and dikes along which communication routes are laid, the overhead line must also meet the requirements for overhead lines when crossing and approaching the corresponding objects of communication routes.

In this case, the horizontal distances from any part of the support to the communication routes should be taken as for overhead lines in sections of a constrained route. Distances to pedestrian paths and sidewalks are not standardized.

It is not allowed to place wires within the clearance of buildings, as well as within the width occupied by elements of the contact network of electrified railways.

It is allowed to place wires within the road surface, pedestrian paths and sidewalks.

See other articles Section Rules for the installation of electrical installations (PUE).

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