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1 printed apparatus
English-Russian dictionary of Information technology > printed apparatus
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2 printed apparatus
Телекоммуникации: аппаратура на печатных схемах -
3 printed apparatus
English-Russian dictionary of modern telecommunications > printed apparatus
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4 printed apparatus
English-Russian dictionary of microelectronics > printed apparatus
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5 apparatus
1. n прибор, инструмент; аппарат2. n аппаратура3. n машина, механизм4. n физиол. система органов5. n государственная машина6. n аппарат7. n справочный аппаратcritical apparatus, apparatus criticus — справочный критический материал
8. n снарядfixed apparatus — закрепил снаряд; закрепленный снаряд
Синонимический ряд:1. device (noun) appliance; contraption; contrivance; device; gadget; gizmo; machine; mechanism; tool2. equipment (noun) accouterments; equipment; gear; habiliments; implements; machinery; material; materials; materiel; outfit; paraphernalia; rig; tackle; tackling; turnout -
6 Brunschwig, Hieronymus
SUBJECT AREA: Medical technology[br]b. c.1440 Strasbourg, Alsaced. 1512/13 Strasbourg, Alsace[br]German surgeon and chemist.[br]Brunschwig was a widely read and highly respected surgeon of the city of Strasbourg. He was a writer of two works, one on surgery and the other, of greater importance, on chemical distillation. In this he was the inheritor of a tradition of the practice of distillation going back to the first centuries AD. The most familiar chemical tradition in the Middle Ages was that of alchemy, devoted to the attempt to make gold. The appearance of a number of printed books of a severely practical nature after 1500, however, testifies to the existence of a practical tradition that had flourished alongside alchemy. Brunsch-wig's first essay in this field was printed in 1500 and dealt with the preparation of "simples", or remedies with a single active constituent. In 1507 he brought out a work on the distilling of "composites", remedies with two or more active constituents. In these works Brunschwig sought to present a comprehensive account of the various kinds of apparatus available and the methods of preparing medicines, together with an account of the diseases it was hoped to cure with them. It was one of the earliest printed books on a chemical subject and the earliest to include illustrations of chemical apparatus. The works were widely used and did much to turn chemistry away from its preoccupation with gold-making, towards the making of substances useful in medicine.[br]Further ReadingThe best account of Brunschwig's life and work is the introduction to Book of Distillation by Hieronymus Bruunschwig, 1971, introd. Harold J.Abrahams, New York, Johnson Reprint (the best account of Brunschwig's life and work).LRD -
7 sheet
1. лист; сфальцованный лист2. печатный листsheet pan — форма — лист
3. оттискproof sheet — корректурный оттиск, корректура
4. газета5. таблица; ведомость6. листовая бумага7. книга; брошюра8. прокладывать листыin sheets — в несфальцованных листах; в форме несброшюрованных листов
9. объявление, анонсbacking sheet — лист-основа, подложка
bar sheet — полоса, отделяемая от ленты при её продольной разрезке
base sheet — основной лист, основной оригинал
10. газета большого форматаsheet and half post — формат печатной бумаги,5Х59,6 см
11. резинотканевая пластина12. широкий лист13. широкая полосаbarred sheet — полоса, отделяемая от ленты при ее продольной разрезке
14. плакат15. формат листа 2cardboard sheet — картонный лист, лист картона
charged sheet — лист, несущий электростатический заряд
continuous form sheets — бесконечные формуляры; канцелярские формы, отпечатанные на ленте
copy sheet — лист копировального материала, лист для копирования
cork sheet — пробковый лист, лист пробкового полотна
cover sheet — настил, прокладка
16. обрезанный лист17. нарезанные листыcutting sheet — пластмассовый лист, на котором производят корректуру фотонаборной плёнки с помощью скальпеля
18. первый приправочный лист19. лист декеляdiffusion sheet — матовое стекло, светорассеивающая пластина
20. затяжной лист декеляsheet buckling force — сила, необходимая для выгибания листа
21. лист для переноса изображения сухим способом22. формная пластина, обрабатываемая сухим способом23. электрофотографический листовой материал24. электрофотографическая копияelectrophotosensitive copy sheet — электросветочувствительный копировальный лист, лист фотополупроводникового копировального материала
fanned-out sheets — листы, уложенные с роспуском; распущенные листы
final support sheet — лист, используемый для изготовления копии
form sheet — формуляр; бланк; канцелярская форма
free sheet — лист бумаги, не содержащей древесной массы
freshly printed sheet — свежезапечатанный лист, свежеотпечатанный оттиск; сырой оттиск
25. лист тонкой бумаги, лист бумаги, приклеиваемый к полю иллюстрации26. затяжной лист; верхний листink sheet — лист, используемый в качестве резервуара краски
sheet misfeed — пропуск в подаче листа, неподача листа
27. тонкий приправочный лист28. приправочный лист с поверхностным покрытиемmisregistered sheet — лист, отпечатанный без приводки
29. лист, выведенный на приёмкуsheet pick-up feeder — раскладчик — питатель листов
sheet assembly — комплект листов; многослойный лист
30. готовый оттиск на приёмке31. контрольный оттиск32. монтажный лист33. макетleveler sheet — лист, удаляемый из декеля при введении приправочного листа
litho-printed sheet — лист, запечатанный офсетным способом
34. формная пластина35. листовой оригинал для копирования36. неправильно выровненный листprogram sheet — программный бланк; лист программы
37. лист, отпечатанный без приводкиmissed sheet — пропущенный лист; неправильно поданный лист
38. листовка39. информационный листокOK sheet — подписанный к печатанию оттиск, подписной лист; оттиск хорошего качества
40. лист, подкладываемый под печатную форму41. упаковочная тканьperfected sheet — лист, запечатанный с двух сторон
plastic sheet — лист пластмассы; плёнка
press sheet — печатный лист, оттиск
print sheet — копировальный материал; лист, на котором изготавливается копия
printable sheet — лист, пригодный для печатания
printed sheet — печатный лист; запечатанный лист, оттиск
42. корректурный оттиск, гранка43. формуляр44. инвентарная ведомостьcost sheet — калькуляционная ведомость, смета
45. листы для записиrecording sheet — лист, на котором изготавливается копия; лист, используемый для записи информации
register sheet — приводочный лист, лист для контроля приводки
reverse buckle sheet — лист, выгибаемый реверсивными фрикционными роликами
roller-coated sheet — лист со слоем, накатанным валиком
setoff sheet — прокладочный лист ; макулатурный лист
shrink-control backing sheet — малоусадочная основа; подложка с малой деформацией
slush sheet — журнал, печатающий сентиментальные рассказы
stackable sheets — оттиски, готовые для укладки в стопу
stacked sheets — листы, уложенные в стопу
straight sheet — лента, движущаяся после продольной разрезки в том же направлении
46. лист, используемый для изготовления копии47. лист-основа, подложка48. верхний лист49. верхний лист пачкиoverfeed sheet — лист, поданный с опережением
50. формная пластина для конторских множительных машин51. съёмный переводной лист52. пробный оттиск -
8 delivery
1. приёмно-выводное устройство2. вывод3. приёмка4. доставка, разноскаstop delivery — приостановить сдачу; приостановить доставку
delay in delivery — задержка в доставке; задержка в сдаче
5. нагнетание6. производительностьdelivery volume — объем подачи; производительность
7. продукция8. автоматическое приёмно-выводное устройство9. автоматический вывод листа10. приёмный цепной транспортёр11. цепное листовыводное устройствоdouble delivery — сдвоенное приёмное устройство, приёмное устройство вывода продукции двумя потоками
12. производительность вентилятора13. ротационное устройство, передающее сфальцованные тетради на выводной транспортёр14. фронтальный вывод15. приёмное устройство, расположенное со стороны самонакладаline delivery — перемещение строки, подача строки
printed-side-up front delivery — устройство для фронтального вывода оттисков запечатанной стороной вверх
16. листовыводное устройство17. листовая приёмка -
9 master
1. оригинал; эталон; образцовый, эталонныйmaster drawing — оригинал; эталонный чертеж
2. фотошаблон; фотоформа3. матрица4. форма для множительных машинmaster input roll — полный рулон, установленный в машину
5. мастер; квалифицированный рабочийmaster roll — рабочий бумажный рулон, полный рулон
6. печатный оригинал; оригинал, изготовленный путём печатанияfilm master — оригинал микрофильма; оригинал на плёнке
7. бумажная офсетная форма8. шрифтоноситель9. наборная матрица -
10 Dickson, William Kennedy Laurie
SUBJECT AREA: Photography, film and optics[br]b. August 1860 Brittany, Franced. 28 September 1935 Twickenham, England[br]Scottish inventor and photographer.[br]Dickson was born in France of English and Scottish parents. As a young man of almost 19 years, he wrote in 1879 to Thomas Edison in America, asking for a job. Edison replied that he was not taking on new staff at that time, but Dickson, with his mother and sisters, decided to emigrate anyway. In 1883 he contacted Edison again, and was given a job at the Goerk Street laboratory of the Edison Electric Works in New York. He soon assumed a position of responsibility as Superintendent, working on the development of electric light and power systems, and also carried out most of the photography Edison required. In 1888 he moved to the Edison West Orange laboratory, becoming Head of the ore-milling department. When Edison, inspired by Muybridge's sequence photographs of humans and animals in motion, decided to develop a motion picture apparatus, he gave the task to Dickson, whose considerable skills in mechanics, photography and electrical work made him the obvious choice. The first experiments, in 1888, were on a cylinder machine like the phonograph, in which the sequence pictures were to be taken in a spiral. This soon proved to be impractical, and work was delayed for a time while Dickson developed a new ore-milling machine. Little progress with the movie project was made until George Eastman's introduction in July 1889 of celluloid roll film, which was thin, tough, transparent and very flexible. Dickson returned to his experiments in the spring of 1891 and soon had working models of a film camera and viewer, the latter being demonstrated at the West Orange laboratory on 20 May 1891. By the early summer of 1892 the project had advanced sufficiently for commercial exploitation to begin. The Kinetograph camera used perforated 35 mm film (essentially the same as that still in use in the late twentieth century), and the kinetoscope, a peep-show viewer, took fifty feet of film running in an endless loop. Full-scale manufacture of the viewers started in 1893, and they were demonstrated on a number of occasions during that year. On 14 April 1894 the first kinetoscope parlour, with ten viewers, was opened to the public in New York. By the end of that year, the kinetoscope was seen by the public all over America and in Europe. Dickson had created the first commercially successful cinematograph system. Dickson left Edison's employment on 2 April 1895, and for a time worked with Woodville Latham on the development of his Panoptikon projector, a projection version of the kinetoscope. In December 1895 he joined with Herman Casier, Henry N.Marvin and Elias Koopman to form the American Mutoscope Company. Casier had designed the Mutoscope, an animated-picture viewer in which the sequences of pictures were printed on cards fixed radially to a drum and were flipped past the eye as the drum rotated. Dickson designed the Biograph wide-film camera to produce the picture sequences, and also a projector to show the films directly onto a screen. The large-format images gave pictures of high quality for the period; the Biograph went on public show in America in September 1896, and subsequently throughout the world, operating until around 1905. In May 1897 Dickson returned to England and set up as a producer of Biograph films, recording, among other subjects, Queen Victoria's Diamond Jubilee celebrations in 1897, Pope Leo XIII in 1898, and scenes of the Boer War in 1899 and 1900. Many of the Biograph subjects were printed as reels for the Mutoscope to produce the "what the butler saw" machines which were a feature of fairgrounds and seaside arcades until modern times. Dickson's contact with the Biograph Company, and with it his involvement in cinematography, ceased in 1911.[br]Further ReadingGordon Hendricks, 1961, The Edison Motion Picture Myth.—1966, The Kinetoscope.—1964, The Beginnings of the Biograph.BCBiographical history of technology > Dickson, William Kennedy Laurie
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11 patent
1) патент (охранный документ на изобретение, удостоверяющий признание предложения изобретением, его приоритет и исключительное право на него патентообладателя)2) патентовать; патентованный; патентный•- patent applied for
- patent in force
- patent being in force
- patent for a design
- patent for an invention
- patent for a plant
- patent for improvement
- patent in dispute
- patent on a design
- patent pending
- patent referred to
- patent abroad
- patent of addition
- patent of confirmation
- patent of importation
- patent of improvement
- patent of revalidation
- abandoned patent
- additional patent
- adjudicated patent
- AEC-owned patent
- anticipating patent
- apparatus patent
- art patent
- article patent
- assailable patent
- assigned patent
- atomic energy patent
- attackable patent
- attacked patent
- basic patent
- biological patent
- blocking patent
- blocking-off patent
- borderline patent
- British Letters patent
- broad patent
- business method patent
- cancelled patent
- ceased patent
- chemical patent
- cited patent
- collateral patent
- colonial patent
- combination patent
- Commission-owned patent
- communicated patent
- competing patent
- complementary patent
- composition-of-matter patent
- confirmation patent
- conflicting patent
- contestable patent
- copending patents
- corresponding patents
- deadwood patent
- dead-wood patent
- defective patent
- dependent patent
- design letters patent
- device patent
- disputed patent
- divisional patent
- domestic patent
- dominant patent
- dormant patent
- double patent
- dragnet patent
- drug patent
- duplicate patents
- earlier patent
- economic patent
- electrical patent
- European patent
- exclusive patent
- exercisable patent
- existing patent
- expired patent
- exploitable patent
- extended patent
- extinct patent
- fencing-off patent
- final patent
- foreign patent
- forfeited patent
- fortifying patent
- freed patent
- free-lance patent
- French pharmaceutical patent
- granted patent
- home patent
- importation patent
- improvement patent
- incipient patent
- incontestable patent
- independent patent
- indigenous patent
- industrial patent
- industrial development patent
- infringed patent
- infringing patent
- infringing patents
- inoperative patent
- interdependent patents
- intervening patent
- invalid patent
- issued patent
- joint patent
- key patent
- land patent
- lapsed patent
- later patent
- later-dated patent
- legally effective patent
- letters patent
- licensed patent
- litigious patent
- live patent
- machine patent
- main patent
- manufacture patent
- master patent
- material patent
- mechanical patent
- medical patent
- metallurgical patent
- method patent
- minor patent
- modification patent
- more recent patent
- narrow patent
- national patent
- national patent under the PCT
- native's patent
- new use patent
- non-convention patent
- Nordic patent
- not infringed patent
- nuisance patent
- objected patent
- obstructive patent
- old patent
- operative patent
- original patent
- ornamental design patent
- overlapping patents
- paper patent
- parallel patent
- parent patent
- pending patent
- petty patent
- pharmaceutical patent
- pioneer patent
- plant patent
- pooled patent
- posthumous patent
- practicable patent
- printed patent
- prior patent
- process patent
- product patent
- provisional European patent
- questionable patent
- reference patent
- regional patent
- reinstated patent
- reissue patent
- reissued patent
- related patent
- revoked patent
- scarecrow patent
- secret patent
- senior patent
- shot gun patent
- simultaneous patent
- small patent
- software patent
- standard patent
- strain patent
- strong patent
- structure patent
- subordinate patent
- subsequent patent
- subservient patent
- subsidiary patent
- sued upon patent
- suppressed patent
- transfer of technology patent
- unenforceable patent
- unexpired patent
- universal patent
- unjustified patent
- unused patent
- U. S. patent
- useful model patent
- utility patent
- valid patent
- valuable patent
- void patent
- voidable patent
- weak patent
- withheld patent
- world-wide patent
- worthless patent
- X-series patent
- younger patent
- youngest patent* * *патент (охранный документ, представляющий исключительнее право на осуществление, использование и продажу изобретения в течение определенного срока и на определенно» территории) -
12 press *****
[prɛs]1. n1) (apparatus, machine: gen) pressa, (for wine) torchio2) (printing press) torchio da stampa, (place) tipografiato go to press — (newspaper) andare in macchina
to be in the press — (being printed) essere in (corso di) stampa, (in the newspapers) essere sui giornali
the press — (newspapers) la stampa, i giornali
to get a good/bad press — avere una buona/cattiva stampa
2. vt1) (push: button) premere, schiacciare, (doorbell) suonare, (trigger) premere, (squeeze: grapes, olives) pigiare, (flowers) pressare, (hand) stringereto press sb/sth to one's heart — stringersi qn/qc al petto or al cuore
2) (iron) stirare3)(urge, entreat)
to press sb to do or into doing sth — fare pressione su qn affinché faccia qcto press sth on sb — (food, gift) insistere perché qn accetti qc, (one's opinions) voler imporre qc su qn, (insist on: attack) rendere più pressante, (claim, demands) insistere su or in3. vi1) (in physical sense) spingere, premereto press ahead or forward (with sth) fig — proseguire (in qc)
2)(urge, agitate)
to press for sth — fare pressioni per ottenere qc•- press on -
13 Extract Styles
A system of cloth printing in which mordants and colouring matters are mixed together and printed on the cloth. The colour is developed afterwards by steaming. This is a popular method of printing and fairly simple, as the developing of the colour is done by the action of the hot moist vapour in the steaming apparatus. The system is also termed " Steam styles." -
14 Berliner, Emile
SUBJECT AREA: Recording[br]b. 20 May 1851 Hannover, Germanyd. 3 August 1929 Montreal, Canada[br]German (naturalized American) inventor, developer of the disc record and lateral mechanical replay.[br]After arriving in the USA in 1870 and becoming an American citizen, Berliner worked as a dry-goods clerk in Washington, DC, and for a period studied electricity at Cooper Union for the Advancement of Science and Art, New York. He invented an improved microphone and set up his own experimental laboratory in Washington, DC. He developed a microphone for telephone use and sold the rights to the Bell Telephone Company. Subsequently he was put in charge of their laboratory, remaining in that position for eight years. In 1881 Berliner, with his brothers Joseph and Jacob, founded the J.Berliner Telephonfabrik in Hanover, the first factory in Europe specializing in telephone equipment.Inspired by the development work performed by T.A. Edison and in the Volta Laboratory (see C.S. Tainter), he analysed the existing processes for recording and reproducing sound and in 1887 developed a process for transferring lateral undulations scratched in soot into an etched groove that would make a needle and diaphragm vibrate. Using what may be regarded as a combination of the Phonautograph of Léon Scott de Martinville and the photo-engraving suggested by Charles Cros, in May 1887 he thus demonstrated the practicability of the laterally recorded groove. He termed the apparatus "Gramophone". In November 1887 he applied the principle to a glass disc and obtained an inwardly spiralling, modulated groove in copper and zinc. In March 1888 he took the radical step of scratching the lateral vibrations directly onto a rotating zinc disc, the surface of which was protected, and the subsequent etching created the groove. Using well-known principles of printing-plate manufacture, he developed processes for duplication by making a negative mould from which positive copies could be pressed in a thermoplastic compound. Toy gramophones were manufactured in Germany from 1889 and from 1892–3 Berliner manufactured both records and gramophones in the USA. The gramophones were hand-cranked at first, but from 1896 were based on a new design by E.R. Johnson. In 1897–8 Berliner spread his activities to England and Germany, setting up a European pressing plant in the telephone factory in Hanover, and in 1899 a Canadian company was formed. Various court cases over patents removed Berliner from direct running of the reconstructed companies, but he retained a major economic interest in E.R. Johnson's Victor Talking Machine Company. In later years Berliner became interested in aeronautics, in particular the autogiro principle. Applied acoustics was a continued interest, and a tile for controlling the acoustics of large halls was successfully developed in the 1920s.[br]Bibliography16 May 1888, Journal of the Franklin Institute 125 (6) (Lecture of 16 May 1888) (Berliner's early appreciation of his own work).1914, Three Addresses, privately printed (a history of sound recording). US patent no. 372,786 (basic photo-engraving principle).US patent no. 382,790 (scratching and etching).US patent no. 534,543 (hand-cranked gramophone).Further ReadingR.Gelatt, 1977, The Fabulous Phonograph, London: Cassell (a well-researched history of reproducible sound which places Berliner's contribution in its correct perspective). J.R.Smart, 1985, "Emile Berliner and nineteenth-century disc recordings", in WonderfulInventions, ed. Iris Newson, Washington, DC: Library of Congress, pp. 346–59 (provides a reliable account).O.Read and W.L.Welch, 1959, From Tin Foil to Stereo, Indianapolis: Howard W.Sams, pp. 119–35 (provides a vivid account, albeit with less precision).GB-N -
15 Ercker, Lazarus
[br]b. c.1530 Annaberg, Saxony, Germanyd. 1594 Prague, Bohemia[br]German chemist and metallurgist.[br]Educated at Wittenberg University during 1547–8, Ercker obtained in 1554, through one of his wife's relatives, the post of Assayer from the Elector Augustus at Dresden. From then on he took a succession of posts in mining and metallurgy. In 1555 he was Chief Consultant and Supervisor of all matters relating to mines, but for some unknown reason was demoted to Warden of the Mint at Annaberg. In 1558 he travelled to the Tyrol to study the mines in that region, and in the same year Prince Henry of Brunswick appointed him Warden, then Master, of the Mint at Goslar. Ercker later moved to Prague where, through another of his wife's relatives, he was appointed Control Tester at Kutna Hora. It was there that he wrote his best-known book, Die Beschreibung allfürnemisten mineralischen Ertz, which drew him to the attention of the Emperor Maximilian, who made him Courier for Mining and a clerk of the Supreme Court of Bohemia. The next Emperor, Rudolf II, a noted patron of science and alchemy, promoted Ercker to Chief Inspector of Mines and ennobled him in 1586 with the title Von Schreckenfels'. His second wife managed the mint at Kutna Hora and his two sons became assayers. These appointments gained him much experience of the extraction and refining of metals. This first bore fruit in a book on assaying, Probierbüchlein, printed in 1556, followed by one on minting, Münzbuch, in 1563. His main work, Die Beschreibung, was a systematic review of the methods of obtaining, refining and testing the alloys and minerals of gold, silver, copper, antimony, mercury and lead. The preparation of acids, salts and other compounds is also covered, and his apparatus is fully described and illustrated. Although Ercker used Agricola's De re metattica as a model, his own work was securely based on his practical experience. Die Beschreibung was the first manual of analytical and metallurgical chemistry and influenced later writers such as Glauber on assaying. After the first edition in Prague came four further editions in Frankfurt-am-Main.[br]BibliographyDie Beschreibung allfürnemisten mineralischen Ertz, Prague. 1556, Probierbuchlein.1563, Munzbuch.Further ReadingP.R.Beierlein, 1955, Lazarus Ercker, Bergmann, Hüttenmann und Münzmeister im 16. Jahrhundert, Berlin (the best biography, although the chemical details are incomplete).J.R.Partington, 1961, History of Chemistry, London, Vol. II, pp. 104–7.E.V.Armstrong and H.Lukens, 1939, "Lazarus Ercker and his Probierbuch", J.Chem. Ed.16: 553–62.LRD -
16 continuous current-carrying capacity
длительная пропускная способность по току
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > continuous current-carrying capacity
-
17 ampacity (US)
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
Англо-русский словарь нормативно-технической терминологии > ampacity (US)
-
18 continuous current
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
непрерывный ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999]Тематики
- электротехника, основные понятия
EN
Англо-русский словарь нормативно-технической терминологии > continuous current
-
19 current-carrying capacity
(длительный) допустимый ток
Максимальное значение электрического тока, который может протекать длительно по проводнику, устройству или аппарату при определенных условиях без превышения определенного значения их температуры в установившемся режиме
[ ГОСТ Р МЭК 60050-826-2009]
Этот ток обозначают IZ
[ ГОСТ Р 50571. 1-2009 ( МЭК 60364-1: 2005)]EN
(continuous) current-carrying capacity
ampacity (US)
maximum value of electric current which can be carried continuously by a conductor, a device or an apparatus, under specified conditions without its steady-state temperature exceeding a specified value
[IEV number 826-11-13]
ampacity
The current in amperes that a conductor can carry continuously under the conditions of use without exceeding its temperature rating.
[National Electrical Cod]FR
courant (permanent) admissible, m
valeur maximale du courant électrique qui peut parcourir en permanence, un conducteur, un dispositif ou un appareil, sans que sa température de régime permanent, dans des conditions données, soit supérieure à la valeur spécifiée
[IEV number 826-11-13]Ampacity, the term is defined as the maximum amount of current a cable can carry before sustaining immediate or progressive deterioration. Also described as current rating or current-carrying capacity, is the RMS electric current which a device can continuously carry while remaining within its temperature rating. The ampacity of a cable depends on:
- its insulation temperature rating;
- conductor electrical properties for current;
- frequency, in the case of alternating currents;
- ability to dissipate heat, which depends on cable geometry and its surroundings;
- ambient temperature.
Electric wires have some resistance, and electric current flowing through them causes voltage drop and power dissipation, which heats the cable. Copper or aluminum can conduct a large amount of current before melting, but long before the conductors melt, their insulation would be damaged by the heat.
The ampacity for a power cable is thus based on physical and electrical properties of the material & construction of the conductor and of its insulation, ambient temperature, and environmental conditions adjacent to the cable. Having a large overall surface area may dissipate heat well if the environment can absorb the heat.
In a long run of cable, different conditions govern, and installation regulations normally specify that the most severe condition along the run governs the cable's rating. Cables run in wet or oily locations may carry a lower temperature rating than in a dry installation. Derating is necessary for multiple circuits in close proximity. When multiple cables are near, each contributes heat to the others and diminishes the amount of cooling air that can flow past the individual cables. The overall ampacity of the insulated conductors in a bundle of more than 3 must be derated, whether in a raceway or cable. Usually the de-rating factor is tabulated in a nation's wiring regulations.
Depending on the type of insulating material, common maximum allowable temperatures at the surface of the conductor are 60, 75 and 90 degrees Celsius, often with an ambient air temperature of 30°C. In the U.S., 105°C is allowed with ambient of 40°C, for larger power cables, especially those operating at more than 2 kV. Likewise, specific insulations are rated 150, 200 or 250°C.
The allowed current in cables generally needs to be decreased (derated) when the cable is covered with fireproofing material.
For example, the United States National Electric Code, Table 310-16, specifies that up to three 8 AWG copper wires having a common insulating material (THWN) in a raceway, cable, or direct burial has an ampacity of 50 A when the ambient air is 30°C, the conductor surface temperature allowed to be 75°C. A single insulated conductor in air has 70 A rating.
Ampacity rating is normally for continuous current, and short periods of overcurrent occur without harm in most cabling systems. The acceptable magnitude and duration of overcurrent is a more complex topic than ampacity.
When designing an electrical system, one will normally need to know the current rating for the following:- Wires
- Printed Circuit Board traces, where included
- Fuses
- Circuit breakers
- All or nearly all components used
Some devices are limited by power rating, and when this power rating occurs below their current limit, it is not necessary to know the current limit to design a system. A common example of this is lightbulb holders.
[http://en.wikipedia.org/wiki/Ampacity]
Тематики
- электротехника, основные понятия
Синонимы
EN
DE
- Dauerstrombelastbarkeit, f
- Strombelastbarkeit, f
FR
- courant admissible, m
- courant permanent admissible, m
предельно допустимый ток
—
[Я.Н.Лугинский, М.С.Фези-Жилинская, Ю.С.Кабиров. Англо-русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.]Тематики
- электротехника, основные понятия
EN
прочность печатной платы к токовой нагрузке
Свойство печатной платы сохранять электрические и механические характеристики после воздействия максимально допустимой токовой нагрузки на печатный проводник или металлизированное отверстие печатной платы.
[ ГОСТ Р 53386-2009]Тематики
EN
Англо-русский словарь нормативно-технической терминологии > current-carrying capacity
См. также в других словарях:
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