Free technical library
Characteristics of automatic switches. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Electrician's Handbook
Comments on the article
The tripping characteristics of the disconnecting devices of circuit breakers depend on the type of connected load.
There are several tripping characteristics of circuit breakers (А, В, С, D, К, Z).
Circuit breakers with characteristic type A designed to open circuits with a long length of electrical wiring and to protect semiconductor devices.
Rice. 1. Tripping characteristic, type A
Circuit breakers with characteristic type B it is recommended to use for lighting networks of general purpose.
Rice. 2. Tripping characteristic, type B
Circuit breakers with tripping characteristic type C are used to open lighting circuits and installations with moderate starting currents (motors and transformers).
At the same time, for circuit breakers with characteristic type C the overload capacity of the magnetic circuit breaker is twice that of circuit breakers with characteristic type B.
Rice. 3. Tripping characteristic, type C
In circuits with active-inductive loads, as well as for the protection of electric motors with high starting currents, it is proposed to use circuit breakers with a characteristic type D.
Rice. 4. Tripping characteristic type D
To connect an inductive load, it is recommended to use circuit breakers with a characteristic type K.
Rice. 5. Tripping characteristic type K
If electronic devices are used as a load, it is better to connect them through circuit breakers with a characteristic type Z.
Rice. 6. Tripping characteristic, type Z
Publication: electro.narod.ru
See other articles Section Electrician's Handbook.
Read and write useful comments on this article.
<< Back
Latest news of science and technology, new electronics:
Traffic noise delays the growth of chicks
06.05.2024
The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>
Wireless speaker Samsung Music Frame HW-LS60D
06.05.2024
In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>
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 ... >>
| Random news from the Archive Disney releases its own Android smartphones
09.02.2012
The Walt Disney Company, as part of a partnership agreement with mobile operator NTT DoCoMo, has released two new Android smartphones for its fans. The phones are part of a new line that will be sold under the "Disney Mobile on DoCoMo" brand. The first of the two models (F-08D) will be on sale in Japan at the end of February, while the second (P-05D) will be available only in March.
Both devices will receive thematic drawings on the case, a Disney interface, as well as cartoon screensavers and icons. According to the company, both models will be protected from water and dust. The F-08D features a 4,3-inch OLED display, a 4430GHz dual-core TI OMAP 1,2 processor, and dual cameras. The back panel will feature playful silhouettes of Mickey and Minnie Mouse. The phone will come with a stylized docking station. As for the other member of the line, it will also get a 4,3-inch display, but the dual-core OMAP 4430 processor will be clocked at 1 GHz. As a bonus, the company offers the consumer several interchangeable panels that will come with the phone.
Both smartphones will have Disney-exclusive content: themed puzzles, apps, music games and live wallpapers. Despite the fact that phones can claim to be in fairly high demand, so far only residents of Japan will be able to purchase them.
|
Other interesting news:
▪ Most Integrated Serial-to-Parallel Converters
▪ Three-legged driver with four arms
▪ New Series of Thick Film Power Resistors
▪ Analog Devices Blackfin Digital Signal Processor
▪ Created a unique cold matter
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ site section Power Amplifiers. Article selection
▪ Article EMERCOM of Russia - the federal governing body in the field of civil defense and protection of the population and territories from emergencies. Basics of safe life
▪ article What is dysbacteriosis? Detailed answer
▪ Orchid article. Legends, cultivation, methods of application
▪ article Tunable low-noise antenna amplifier. Encyclopedia of radio electronics and electrical engineering
▪ article Thread with a needle. 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