Selection of conductors for heating, economic current density and corona conditions. Application area

Free technical library

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

Section 1 General Rules

Selection of conductors for heating, economic current density and corona conditions. Application area

Free technical library

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

Comments on the article

1.3.1. real chapter¹⁾ The Rules apply to the selection of sections of electrical conductors (bare and insulated wires, cables and tires) for heating, economic current density and corona conditions. If the conductor cross section determined by these conditions is less than the cross section required by other conditions (thermal and electrodynamic resistance at short-circuit currents, voltage losses and deviations, mechanical strength, overload protection), then the largest cross section required by these conditions should be taken.

1. Approved by the Main Technical Administration and Gosenergonadzor of the USSR Ministry of Energy on December 10, 1979.

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:

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. ... >>

Controlling objects using air currents 04.05.2024

The development of robotics continues to open up new prospects for us in the field of automation and control of various objects. Recently, Finnish scientists presented an innovative approach to controlling humanoid robots using air currents. This method promises to revolutionize the way objects are manipulated and open new horizons in the field of robotics. The idea of controlling objects using air currents is not new, but until recently, implementing such concepts remained a challenge. Finnish researchers have developed an innovative method that allows robots to manipulate objects using special air jets as "air fingers". The air flow control algorithm, developed by a team of specialists, is based on a thorough study of the movement of objects in the air flow. The air jet control system, carried out using special motors, allows you to direct objects without resorting to physical ... >>

Purebred dogs get sick no more often than purebred dogs 03.05.2024

Caring for the health of our pets is an important aspect of the life of every dog owner. However, there is a common assumption that purebred dogs are more susceptible to diseases compared to mixed dogs. New research led by researchers at the Texas School of Veterinary Medicine and Biomedical Sciences brings new perspective to this question. A study conducted by the Dog Aging Project (DAP) of more than 27 companion dogs found that purebred and mixed dogs were generally equally likely to experience various diseases. Although some breeds may be more susceptible to certain diseases, the overall diagnosis rate is virtually the same between both groups. The Dog Aging Project's chief veterinarian, Dr. Keith Creevy, notes that there are several well-known diseases that are more common in certain breeds of dogs, which supports the notion that purebred dogs are more susceptible to disease. ... >>

Random news from the Archive

Pluto could have an ocean 26.05.2019

Scientists from Japan and the United States have come to the conclusion that a liquid ocean may be located under the surface of Pluto. It is protected from freezing by an insulating layer.

Computer simulations carried out by scientists provide strong evidence that an insulating layer of gas hydrates can keep the underground ocean from freezing under Pluto's icy surface.

On the other hand, these conclusions contradict the age of the dwarf planet, based on which the ocean should have frozen over a very long time ago. Therefore, initially this version was considered implausible.

Other interesting news:

▪ Secret microwave

▪ Factory for the production of artificial meat

▪ video surveillance exam

▪ Preparations for the Chinese lunar mission

▪ All U.S. vehicles will be switched from gasoline to gas

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Calls and audio simulators. Article selection

▪ article There is such a party! Popular expression

▪ article Who robbed the pharaohs? Detailed answer

▪ article Zopnik prickly. Legends, cultivation, methods of application

▪ article GSM alarm. Encyclopedia of radio electronics and electrical engineering

▪ article Stabilized power supply for six output voltages, 220 / 3,4,5,6,7.5,9,12 volts 0,25 amperes. 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