According to the "Regulations on the Protection of Electric Power Facilities"
Article 10 Power line protection zone:
(1) Overhead power line protection zone: The conductor edges are horizontal to the outside The area within two parallel planes formed by extending and perpendicular to the ground. In general areas, the edge extension distances of voltage conductors at all levels are as follows:
1-10 kV 5 meters
35 —110 kV 10 meters
154 — 330 kV 15 meters
500 kV 20 meters
In densely populated areas such as factories, mines, towns, etc., overhead power The area of ??the line protection zone may be slightly smaller than the above regulations. However, the distance extended by the side lines of voltage conductors at all levels should not be less than the sum of the horizontal distance of the conductor side lines after the maximum calculated sag and maximum calculated wind deflection, and the safe distance from the building after the wind deflection.
"Implementation Rules of the Electric Power Facilities Protection Regulations"
The fifth overhead power line protection zone is to ensure the safe operation of established overhead power lines and to ensure the normal power supply for people's lives. Security area must be set. In densely populated areas such as factories, mines, towns, markets, and villages, the overhead power line protection zone is the area within the two parallel lines formed by the sum of the horizontal distance of the conductor edge after the maximum calculated wind deflection and the horizontal safety distance from the building after the wind deflection. area.
Under the condition of calculating the maximum wind deflection of the conductor, the horizontal safe distance from the building is as follows:
Below 1 kV
1.0 meter
1-10kV
1.5m
35kV
3.0m
66-110 Kilovolts
4.0 meters
154-220 kV
5.0 meters
330 kV
6.0 Meters
500 kV
8.5 meters