Free technical library
Section 5. Electric power plants
Capacitor installations. Scope, definitions
Encyclopedia of radio electronics and electrical engineering / Rules for the installation of electrical installations (PUE)
 Comments on the article
5.6.1. This chapter of the Rules applies to capacitor installations up to 500 kV (regardless of their design), connected in parallel with inductive elements of electrical systems of alternating current with a frequency of 50 Hz and designed to compensate for the reactive power of electrical installations and regulate voltage. The chapter does not apply to capacitor units for series compensation, filter and special ones.
Capacitor installations with voltages up to 1 kV and above must also meet the requirements of Ch. 4.1 and 4.2.
5.6.2. A capacitor plant is an electrical installation consisting of capacitors, auxiliary electrical equipment related to them (switches, disconnectors, discharge resistors, control devices, protection, etc.) and busbars.
A capacitor bank may consist of one or more capacitor banks or of one or more separately installed single capacitors connected to the network through switching devices.
5.6.3. A capacitor bank is a group of single capacitors electrically connected to each other.
5.6.4. A single capacitor is a structural connection of one or more capacitor elements in a common housing with external leads.
The term "capacitor" is used when it is not necessary to emphasize the different meanings of the terms "single capacitor" and "capacitor bank".
5.6.5. A capacitor element (section) is an indivisible part of a capacitor, consisting of conductive plates (electrodes) separated by a dielectric.
5.6.6. A series row with a parallel-series connection of capacitors in the battery phase is a part of the battery, consisting of capacitors connected in parallel.
 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:
Machine for thinning flowers in gardens
02.05.2024
In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
... >>
Advanced Infrared Microscope
02.05.2024
Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>
Air trap for insects
01.05.2024
Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>
| Random news from the Archive Created a laser with a 67-attosecond pulse
17.09.2012
A group of researchers from the University of Central Florida received the world's shortest laser pulse. In doing so, it may have given scientists a new tool for seeing quantum mechanics in action. This discovery was the first significant breakthrough in the field of laser pulses in the last four years.
Professor Chang of the Department of Physics and the College of Optics and Photonics and his team have achieved a 67-attosecond laser pulse of hard ultraviolet radiation. The results of their research are published in the journal Optics Letters.
An attosecond is an unimaginably small amount of time. In other words, within one second, 15 million billion pulses, such as those of Chang's team, could be sequentially generated. The achievement is all the more remarkable because no specialized equipment was used. Zhang and his colleagues created the so-called. double optical grating (DOG) method, which cuts off ultraviolet radiation in such a way as to concentrate the maximum radiation in the shortest pulse of light. In addition to the light pulse itself, scientists have also developed ultra-fast cameras to measure it.
"Dr. Chang's success in creating ever shorter light pulses will help open the door to a previously hidden world where we can observe the movement of electrons in atoms and molecules, follow chemical reactions," said Michael Johnson, dean of the UCF College of Science. but now we can see quantum mechanics in action."
The desire to obtain ever shorter light pulses has been going on since the invention of the laser for more than fifty years. For the first time, attosecond pulses were demonstrated only in 2001. Since then, scientists around the world have been trying to achieve shorter and shorter pulses to better understand the subatomic world. The previous record - an impulse of 80 attoseconds - was achieved in 2008 at the Max Planck Institute in Haarlem, Germany.
|
Other interesting news:
▪ To predict a heart attack, droplets of blood stop
▪ The Greenland ice sheet is melting catastrophically
▪ Banana skin flour
▪ Purity of speech affects memory
▪ DC/DC Converters L598x
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the site Lecture notes, cheat sheets. Selection of articles
▪ article The best is the enemy of the good. Popular expression
▪ article Where and when did people take shelter from the weather in armadillo shells? Detailed answer
▪ article Acceptance and shipment of milk. Standard instruction on labor protection
▪ article Soft start and stop of the electric motor. Encyclopedia of radio electronics and electrical engineering
▪ article Guessing thoughts. Focus Secret
Leave your comment on this article:
 All languages of this page
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua
2000-2024
| 
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese