Overhead power lines with voltage up to 1 kV. Application area. Definitions

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Encyclopedia of radio electronics and electrical engineering / Electrician

Section 2. Sewerage of electricity

Overhead power lines with voltage up to 1 kV. Application area. Definitions

Free technical library

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

Comments on the article

2.4.1. This chapter of the Rules applies to AC overhead power lines with voltage up to 1 kV, performed using insulated or bare wires.

Additional requirements for overhead lines up to 1 kV are given in Ch. 2.5, 6.3 and 7.7.

Cable inserts in the line and cable branches from the line must be carried out in accordance with the requirements of Ch. 2.3.

2.4.2. Overhead line (VL) of power transmission with voltage up to 1 kV - a device for the transmission and distribution of electricity through insulated or non-insulated wires located in the open air and attached by linear fittings to supports, insulators or brackets, to building walls and to engineering structures.

An overhead power line with a voltage of up to 1 kV using self-supporting insulated wires (SIP) is designated VLI.

Self-supporting insulated wire - insulated conductors twisted into a bundle, and the carrier conductor can be either insulated or uninsulated. The mechanical load can be taken either by the carrier conductor or by all conductors of the bundle.

2.4.3. Highway VL - a section of the line from the supply transformer substation to the end support.

Linear branches or branches to the input can be connected to the overhead line.

Linear branch from the overhead line - a section of the line connected to the main overhead line, having more than two spans.

A branch from the overhead line to the input is the section from the support of the main line or linear branch to the clamp (input insulator).

A branch from the VLI is allowed to be performed in the span.

2.4.4. The state of the overhead line in the calculations of the mechanical part:

normal mode - mode with unbroken wires;
emergency mode - mode with broken wires;
installation mode - mode in the conditions of installation of supports and wires.

Mechanical calculation of overhead lines up to 1 kV in emergency mode is not performed.

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

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

A New Way to Control and Manipulate Optical Signals 05.05.2024

The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>

Primium Seneca keyboard 05.05.2024

Keyboards are an integral part of our daily computer work. However, one of the main problems that users face is noise, especially in the case of premium models. But with the new Seneca keyboard from Norbauer & Co, that may change. Seneca is not just a keyboard, it is the result of five years of development work to create the ideal device. Every aspect of this keyboard, from acoustic properties to mechanical characteristics, has been carefully considered and balanced. One of the key features of Seneca is its silent stabilizers, which solve the noise problem common to many keyboards. In addition, the keyboard supports various key widths, making it convenient for any user. Although Seneca is not yet available for purchase, it is scheduled for release in late summer. Norbauer & Co's Seneca represents new standards in keyboard design. Her ... >>

The world's tallest astronomical observatory opened 04.05.2024

Exploring space and its mysteries is a task that attracts the attention of astronomers from all over the world. In the fresh air of the high mountains, far from city light pollution, the stars and planets reveal their secrets with greater clarity. A new page is opening in the history of astronomy with the opening of the world's highest astronomical observatory - the Atacama Observatory of the University of Tokyo. The Atacama Observatory, located at an altitude of 5640 meters above sea level, opens up new opportunities for astronomers in the study of space. This site has become the highest location for a ground-based telescope, providing researchers with a unique tool for studying infrared waves in the Universe. Although the high altitude location provides clearer skies and less interference from the atmosphere, building an observatory on a high mountain poses enormous difficulties and challenges. However, despite the difficulties, the new observatory opens up broad research prospects for astronomers. ... >>

Random news from the Archive

New type of soil discovered on the moon 24.12.2015

Researchers studying data from the Chinese moon rover "Yutu" ("Jade Hare") reported the discovery of a new composition of soil on our planet's natural satellite.

The Chang'e-3 automatic station with the Yutu rover was launched on December 1, 2013 by the Long March-3B launch vehicle. The landing of the apparatus on the Moon was carried out on the 14th of the same month in the Sea of Rains. The landing site is notable for being close to the boundary between high and low titanium lava flows.

The soil at Yutu's work site is reportedly different in composition from anything collected by American astronauts in 1969-1972. during the Apollo program and the Soviet moon rovers. In particular, the average content of titanium oxide was recorded in the analyzed samples, which has not been seen before. In addition, the obtained data allow us to speak about a rather high concentration of iron.

Thus, experts believe, the Moon may have a much more complex past than previously thought. However, what exactly is the reason for the presence of rocks of different composition on the surface, scientists are not yet able to say for sure. Perhaps future robotic and manned missions will shed light on the history of the Moon.

Other interesting news:

▪ Solectrac e70N electric tractor

▪ Non-melting ice cream

▪ The computer will increase the harvest

▪ The thermal imager will expose the scammer

▪ New User Identification Methods

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Stories from the life of radio amateurs. Selection of articles

▪ article Times are not chosen, people live and die in them. Popular expression

▪ article What causes solar eclipses? Detailed answer

▪ article Wild snapdragon. Legends, cultivation, methods of application

▪ article Electronic switch. Encyclopedia of radio electronics and electrical engineering

▪ article Simple RF generator. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews