Rules for the protection of electrical networks with voltage up to 1000 V

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Rules for the protection of electrical networks with voltage up to 1000 V. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Rules for the technical operation of consumer electrical installations (PTE)

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Approved by the Decree of the Council of Ministers of the USSR of 11.09.72 No. 667

1. These Rules are introduced in order to ensure the safety of electrical networks with voltage up to 1000 V and to prevent accidents. The rules are mandatory for the design, construction and operation of overhead power lines, input and distribution devices.

2. For the protection of electrical networks with voltage up to 1000 V, the following are installed:

a) security zones:

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along overhead power lines (with the exception of branches to the inputs to buildings) in the form of a plot of land bounded by parallel straight lines, spaced from the projections of the extreme wires on the earth's surface (with their undeflected position) by 2 m on each side;

along underground cable power lines in the form of a plot of land bounded by parallel straight lines, spaced from the outermost cables by 1 m on each side, and when cable lines pass in cities under sidewalks - by 0,6 m towards the carriageway of the street;

along submarine cable power lines in the form of a section of water space from the water surface to the bottom, enclosed between vertical planes spaced from the outermost cables by 100 m on each side;

b) the minimum allowable distances between power lines with voltage up to 1000 V and the nearest buildings and structures, as well as tree and other perennial plantations, determined by the Electrical Installation Rules approved by the USSR Ministry of Energy and Electrification *.

* Now the Ministry of Energy of Russia.

3. If power lines with voltage up to 1000 V pass through forest areas, pruning of trees growing in close proximity to the wires is carried out by the organization operating the power lines. When power lines pass through parks, gardens and other perennial plantings, pruning of trees is carried out by the organization operating the power lines, and by mutual agreement of the parties - by the organization in charge of these plantations, or by individual owners of gardens and other perennial plantations in the manner determined by the organization, operating transmission line.

4. Within the security zones of power lines with voltage up to 1000 V, without the written consent of the organization operating these lines, it is prohibited:

a) carry out construction, assembly, blasting and irrigation works, plant and cut down trees, arrange sports grounds and playgrounds, store fodder, fertilizers, fuel and other materials;

b) arrange berths for mooring ships, barges and floating cranes, carry out loading and unloading, dredging and dredging works, drop anchors, pass with anchors and trawls released, allocate fishing areas, catch fish, as well as aquatic animals and plants with bottom fishing gear , to arrange a watering place, to split and prepare ice (in the security zones of underwater cable power lines);

c) to arrange driveways for machines and mechanisms having a total height with or without load from the road surface of more than 4,5 m, as well as parking for automobile and horse-drawn vehicles, machines and mechanisms (in the security zones of overhead power lines);

d) carry out excavation at a depth of more than 0,3 m and leveling the soil with the help of bulldozers, excavators and other earth-moving machines (in the security zones of cable power lines).

Protective zones of power lines with voltage up to 1000 V passing through the territory of experimental agricultural stations, variety testing plots, production facilities of collective farms, state farms and other agricultural enterprises and organizations, as well as production facilities of Selkhoztekhnika regional associations, can be used by the enterprise or organization that owns these stations, sections and facilities, without agreement with the organization operating the power transmission lines, but with the obligatory ensuring the safety of these lines and observing safety measures.

5. It is forbidden to perform any kind of actions that may disrupt the normal operation of electrical networks or lead to their damage, in particular:

a) throw foreign objects on the wires, attach and tie foreign objects to the supports and wires, climb on the supports, block up the approaches to them and dump snow from the roofs of buildings onto the wires;

b) dump heavy weights (over 5 tons), pour out solutions of acids, alkalis and salts, arrange all kinds of dumps along the route of cable power lines;

c) open the premises of electric grid structures, make connections and switchovers in electric networks, make fire near input and distribution devices, overhead power lines and in the security zones of cable power lines;

d) carry out demolition or reconstruction of buildings, bridges, tunnels, railways and highways and other structures in places where overhead and cable power lines pass or input and distribution devices are installed, to developers without agreement with organizations operating electrical networks.

6. The land area of the security zones of power lines with voltage up to 1000 V is not subject to withdrawal from land users, but is used by them with mandatory compliance with the requirements of these Rules.

Enterprises, organizations, institutions and individual citizens on land plots granted to them for use, along which power lines with voltage up to 1000 V pass, are obliged to take all measures in their power to help ensure the safety of these lines.

7. If wires of overhead power lines with voltage up to 1000 V and lines of other purpose belonging to different organizations are suspended on common supports, each of the organizations carrying out repairs of lines, in which damage to another organization may be caused or the presence of its representative is required, must notify in advance of organization concerned.

8. Enterprises and organizations performing any work (explosive, construction, etc.) that can cause damage to electrical networks with voltage up to 1000 V are obliged to coordinate their performance with the organization operating electrical networks, and take steps to ensure the safety of these networks.

The conditions for carrying out these works within the security zones of a power transmission line with a voltage of up to 1000 V, necessary to ensure the safety of these lines, are established by the USSR Ministry of Energy and Electrification (in relation to construction work - in agreement with the USSR State Construction Committee *).

* Now Gosstroy of Russia.

9. Performing work near overhead power lines using various mechanisms is allowed only if the air distance from the mechanism or from its lifting or retractable part, as well as from the load being lifted in any of their positions (including at the maximum rise or departure ) to the nearest live wire will be at least 1,5 m.

The distance from the cable to the place of excavation is determined in each individual case by the organization operating the cable power line.

If it is impossible to comply with the conditions ensuring the safety of work, the voltage must be removed from the section of the electrical network.

10. Enterprises and organizations performing earthworks, upon detecting a cable not specified in the technical documentation for the performance of these works, are obliged to immediately stop work, take measures to ensure the safety of the cable and inform the organization operating electrical networks about this.

11. The technical personnel of organizations operating electric networks with voltage up to 1000 V are granted the right of unhindered access to electric networks for their repair and maintenance. If electrical networks are located on the territory of restricted areas and special facilities, then the relevant organizations must issue passes to employees servicing these networks for inspection and repair work at any time of the day.

12. Organizations that operate power lines with voltage up to 1000 V are allowed to carry out earthworks in security zones necessary for the repair of these lines.

These works in the right of way of roads and railways are carried out in agreement with the authorities in charge of the roads.

To eliminate accidents on power lines with a voltage of up to 1000 V, it is allowed to cut down individual trees in forest areas adjacent to the route of these lines, followed by the issuance of logging tickets (orders) in the prescribed manner and with the cleaning of logging sites from logging residues.

13. Scheduled work on the repair and reconstruction of power lines with a voltage of up to 1000 V, passing through agricultural land, is carried out in agreement with land users and, as a rule, during the period when these land are not occupied by agricultural crops or when it is possible to ensure the safety of these crops.

Works on elimination of accidents and operational maintenance of power transmission lines can be carried out at any time.

After the performance of these works, organizations operating power transmission lines must bring the land into a condition suitable for use for its intended purpose, as well as compensate land users for losses caused during the work. The procedure for determining losses is established by the USSR Ministry of Agriculture* jointly with the USSR Ministry of Energy and Electrification and in agreement with other interested ministries and departments.

* Now the Ministry of Agriculture of Russia.

14. Planned work on the repair and reconstruction of cable power lines that cause violation of road surfaces can be carried out only after prior agreement on the conditions for their implementation with the authorities in charge of the roads, and within cities and other settlements - with the executive committees of the Soviets of People's Deputies . The terms of the work must be agreed upon within 3 days.

In urgent cases, it is allowed to carry out work on the repair of cable power lines that cause violation of road surfaces, without prior agreement, but with simultaneous notification of the authorities in charge of the roads, or the executive committees of the Soviets of People's Deputies.

Organizations performing these types of work must organize detours of work sites with the installation of warning signs for vehicles and pedestrians and, after completion of work, level the ground and restore road surfaces.

15. The procedure for the operation of power lines with voltage up to 1000 V on the territory of industrial enterprises, at intersections with railways and roads, in the right of way of railways and on the approaches to airfields must be coordinated by organizations operating power lines with the relevant enterprises and organizations.

On motor roads of categories I-IV with the movement of machines and mechanisms having a total height with or without cargo from the road surface of more than 4,5 m, at the intersection of roads with overhead power lines, on both sides of these lines, signal signs indicating the permissible the height of the moving vehicle. Signal signs are installed by the organization in charge of the road, in agreement with the organization operating the power lines.

The places where power lines cross with navigable and raftable rivers must be marked on the banks with signal signs in accordance with the Charter of Inland Water Transport. Signal signs are installed by the organization operating the power transmission lines, in agreement with the basin administrations of the waterway and are included by the latter in the list of navigation conditions and in pilot charts.

16. In cases where electrical networks with voltage up to 1000 V are located on the territory or near the construction sites of the buildings and structures being designed, the projects and estimates for the construction of these facilities, in agreement with the organizations operating electrical networks, should provide for measures to ensure the safety of these networks.

17. Organizations that perform work that necessitate the reorganization of electrical networks or protect them from mechanical damage are obliged to perform work on the reconstruction or protection of networks at the expense of their materials and means in agreement with the organization operating electrical networks.

18. In case of lifting the cable with an anchor, fishing gear or in any other way, the captains of the ships are obliged to take measures to free the cable and immediately report this to the nearest port, indicating the coordinates of the place and time of lifting the cable. The port that received this report is obliged to report the incident to the nearest power supply company.

Citizens who have discovered a broken, lying on the ground or sagging wire of an overhead power line, as well as the danger of falling poles or broken wires, are obliged to immediately inform the nearest power supply company or local authority.

19. Enterprises and organizations in charge of existing and under construction structures that are sources of stray currents must take measures to limit the leakage of electric current into the ground. Organizations in charge of cable transmission lines under construction and operating must take measures to protect these lines from stray currents.

20. Organizations operating electric networks have the right to suspend work in the protected zone of power lines performed by other organizations in violation of the Rules.

21. The executive committees of the Soviets of People's Deputies, as well as the militia bodies, within the limits of their powers, are obliged to assist organizations operating electrical networks with voltage up to 1000 V in preventing damage to these networks and in ensuring that all enterprises, organizations, institutions and citizens comply with the requirements of the Rules.

22. In case of destruction of electrical networks caused by natural disasters (ice, flood, ice drift, hurricane, forest fire, etc.), the executive committees of the Soviets of People's Deputies, within the limits of their authority, are obliged to involve citizens and vehicles in the work to eliminate the destruction of these networks. Payment for restoration work is made by organizations operating electrical networks.

23. Officials and citizens guilty of non-compliance with the requirements of these Rules, as well as in violation of the normal operation of electrical networks with voltage up to 1000 V, are held liable in the prescribed manner.

See other articles Section Rules for the technical operation of consumer electrical installations (PTE).

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